diff --git a/build/consts.go b/build/consts.go
index 740c34a36..41d503b93 100644
--- a/build/consts.go
+++ b/build/consts.go
@@ -104,6 +104,12 @@ var Consts = &ConstTemplateData{
 			Icon:          "vscode-icons:file-type-rust",
 			SdkUrl:        "https://github.com/starfederation/datastar/tree/main/sdk/rust",
 		},
+		{
+			FileExtension: "ruby",
+			Name:          "Ruby",
+			Icon:          "vscode-icons:file-type-ruby",
+			SdkUrl:        "https://github.com/starfederation/datastar/tree/main/sdk/ruby",
+		},
 		{
 			FileExtension: "ts",
 			Name:          "TypeScript",
diff --git a/build/consts_ruby.qtpl b/build/consts_ruby.qtpl
new file mode 100644
index 000000000..27272546c
--- /dev/null
+++ b/build/consts_ruby.qtpl
@@ -0,0 +1,45 @@
+{%- func rubyConsts(data *ConstTemplateData) -%}
+# frozen_string_literal: true
+
+# {%s data.DoNotEdit %}
+module Datastar
+  module Consts
+    DATASTAR_KEY = '{%s data.DatastarKey %}'
+    VERSION = '{%s data.Version %}'
+    {%- for _, d := range data.DefaultDurations %}
+    # {%s= d.Description %}
+    DEFAULT_{%s d.Name.ScreamingSnake %} = {%d durationToMs(d.Duration) %}
+    {%- endfor -%}
+    {%- for _, b := range data.DefaultBools %}
+    # {%s= b.Description %}
+    DEFAULT_{%s b.Name.ScreamingSnake %} = {%v b.Value %}
+    {%- endfor -%}
+    {%- for _, s := range data.DefaultStrings %}
+    # {%s= s.Description %}}
+    DEFAULT_{%s s.Name.ScreamingSnake %} = '{%s s.Value %}'
+    {%- endfor -%}
+
+    {%- for _, enum := range data.Enums -%}
+        {%- if enum.Name.Pascal == "FragmentMergeMode" -%}
+    module FragmentMergeMode
+            {%- for _, entry := range enum.Values %}
+      # {%s entry.Description %}
+      {%s entry.Name.ScreamingSnake %} = '{%s entry.Value %}'
+            {%- endfor -%}
+    end
+        {%- endif -%}
+    {%- endfor -%}
+    {%- for _, enum := range data.Enums -%}
+      {%- if enum.Default != nil %}
+    # {%s= enum.Description %}
+    DEFAULT_{%s enum.Name.ScreamingSnake %} = {%s enum.Name.Pascal %}::{%s enum.Default.Name.ScreamingSnake %}
+      {%- endif -%}
+    {%- endfor -%}
+
+    # Dataline literals.
+    {%- for _, literal := range data.DatalineLiterals -%}
+    {%s literal.ScreamingSnake %}_DATALINE_LITERAL = '{%s literal.Camel %}'
+    {%- endfor -%}
+  end
+end
+{%- endfunc -%}
diff --git a/build/run.go b/build/run.go
index 19670f660..49afb9091 100644
--- a/build/run.go
+++ b/build/run.go
@@ -140,6 +140,7 @@ func writeOutConsts(version string) error {
 		"sdk/java/core/src/main/java/starfederation/datastar/enums/FragmentMergeMode.java": javaFragmentMergeMode,
 		"sdk/python/src/datastar_py/consts.py":                                             pythonConsts,
 		"sdk/typescript/src/consts.ts":                                                     typescriptConsts,
+		"sdk/ruby/lib/datastar/consts.rb":                                                  rubyConsts,
 		"sdk/rust/src/consts.rs":                                                           rustConsts,
 		"sdk/zig/src/consts.zig":                                                           zigConsts,
 		"examples/clojure/hello-world/resources/public/hello-world.html":                   helloWorldExample,
@@ -148,6 +149,7 @@ func writeOutConsts(version string) error {
 		"examples/php/hello-world/public/hello-world.html":                                 helloWorldExamplePHP,
 		"examples/zig/httpz/hello-world/src/hello-world.html":                              helloWorldExample,
 		"examples/zig/tokamak/hello-world/hello-world.html":                                helloWorldExample,
+		"examples/ruby/hello-world/hello-world.html":                                       helloWorldExample,
 		"examples/rust/axum/hello-world/hello-world.html":                                  helloWorldExample,
 		"examples/rust/rocket/hello-world/hello-world.html":                                helloWorldExample,
 	}
diff --git a/examples/ruby/hello-world/Gemfile b/examples/ruby/hello-world/Gemfile
new file mode 100644
index 000000000..27d6a9d92
--- /dev/null
+++ b/examples/ruby/hello-world/Gemfile
@@ -0,0 +1,8 @@
+# frozen_string_literal: true
+
+source 'https://rubygems.org'
+
+gem 'puma'
+gem 'rack'
+# gem 'datastar'
+gem 'datastar', path: '../../../sdk/ruby'
diff --git a/examples/ruby/hello-world/Gemfile.lock b/examples/ruby/hello-world/Gemfile.lock
new file mode 100644
index 000000000..83df723bf
--- /dev/null
+++ b/examples/ruby/hello-world/Gemfile.lock
@@ -0,0 +1,25 @@
+PATH
+  remote: ../../../sdk/ruby
+  specs:
+    datastar (1.0.0.beta.1)
+      rack (~> 3.0)
+
+GEM
+  remote: https://rubygems.org/
+  specs:
+    nio4r (2.7.4)
+    puma (6.6.0)
+      nio4r (~> 2.0)
+    rack (3.1.9)
+
+PLATFORMS
+  arm64-darwin-24
+  ruby
+
+DEPENDENCIES
+  datastar!
+  puma
+  rack
+
+BUNDLED WITH
+   2.6.3
diff --git a/examples/ruby/hello-world/hello-world.html b/examples/ruby/hello-world/hello-world.html
new file mode 100644
index 000000000..a72d427f1
--- /dev/null
+++ b/examples/ruby/hello-world/hello-world.html
@@ -0,0 +1,35 @@
+<!-- This is auto-generated by Datastar. DO NOT EDIT. -->
+
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <title>Datastar SDK Demo</title>
+    <script src="https://unpkg.com/@tailwindcss/browser@4"></script>
+    <script type="module" src="https://cdn.jsdelivr.net/gh/starfederation/datastar@v1.0.0-beta.3/bundles/datastar.js"></script>
+</head>
+<body class="bg-white dark:bg-gray-900 text-lg max-w-xl mx-auto my-16">
+    <div data-signals-delay="400" class="bg-white dark:bg-gray-800 text-gray-500 dark:text-gray-400 rounded-lg px-6 py-8 ring shadow-xl ring-gray-900/5 space-y-2">
+        <div class="flex justify-between items-center">
+            <h1 class="text-gray-900 dark:text-white text-3xl font-semibold">
+                Datastar SDK Demo
+            </h1>
+            <img src="https://data-star.dev/static/images/rocket.png" alt="Rocket" width="64" height="64"/>
+        </div>
+        <p class="mt-2">
+            SSE events will be streamed from the backend to the frontend.
+        </p>
+        <div class="space-x-2">
+            <label for="delay">
+                Delay in milliseconds
+            </label>
+            <input data-bind-delay id="delay" type="number" step="100" min="0" class="w-36 rounded-md border border-gray-300 px-3 py-2 placeholder-gray-400 shadow-sm focus:border-sky-500 focus:outline focus:outline-sky-500 dark:disabled:border-gray-700 dark:disabled:bg-gray-800/20" />
+        </div>
+        <button data-on-click="@get(&#39;/hello-world&#39;)" class="rounded-md bg-sky-500 px-5 py-2.5 leading-5 font-semibold text-white hover:bg-sky-700 hover:text-gray-100 cursor-pointer">
+            Start
+        </button>
+    </div>
+    <div class="my-16 text-8xl font-bold text-transparent" style="background: linear-gradient(to right in oklch, red, orange, yellow, green, blue, blue, violet); background-clip: text">
+        <div id="message">Hello, world!</div>
+    </div>
+</body>
+</html>
\ No newline at end of file
diff --git a/examples/ruby/hello-world/hello-world.ru b/examples/ruby/hello-world/hello-world.ru
new file mode 100644
index 000000000..7925f2de0
--- /dev/null
+++ b/examples/ruby/hello-world/hello-world.ru
@@ -0,0 +1,37 @@
+require 'bundler/setup'
+
+require 'datastar'
+
+# This is a test Rack endpoint
+# with a hello world example using Datastar.
+# To run:
+#
+#   # install dependencies
+#   bundle install
+#   # run this endpoint with Puma server
+#   bundle exec puma ./hello-world.ru
+#
+#   Then open http://localhost:9292
+#
+HTML = File.read(File.expand_path('hello-world.html', __dir__))
+
+run do |env|
+  datastar = Datastar.from_rack_env(env)
+
+  if datastar.sse?
+    delay = (datastar.signals['delay'] || 0).to_i
+    delay /= 1000.0 if delay.positive?
+    message = 'Hello, world!'
+
+    datastar.stream do |sse|
+      message.size.times do |i|
+        sse.merge_fragments(%(<div id="message">#{message[0..i]}</div>))
+        sleep delay
+      end
+    end
+  else
+    [200, { 'content-type' => 'text/html' }, [HTML]]
+  end
+end
+
+trap('INT') { exit }
diff --git a/examples/ruby/threads.ru b/examples/ruby/threads.ru
new file mode 100644
index 000000000..60ff43a54
--- /dev/null
+++ b/examples/ruby/threads.ru
@@ -0,0 +1,84 @@
+require 'bundler/setup'
+
+require 'datastar'
+
+# This is a test Rack endpoint
+# to demo streaming Datastar updates from multiple threads.
+# To run:
+#
+#   # install dependencies
+#   bundle install
+#   # run this endpoint with Puma server
+#   bundle exec puma ./threaded.ru
+#
+#   visit http://localhost:9292
+#
+INDEX = <<~HTML
+  <!DOCTYPE html>
+  <html>
+    <head>
+      <meta charset="UTF-8">
+      <title>Datastar counter</title>
+      <style>
+        body { padding: 10em; }
+        .counter {#{' '}
+          font-size: 2em;#{' '}
+          span { font-weight: bold; }
+        }
+      </style>
+      <script type="module" src="https://cdn.jsdelivr.net/gh/starfederation/datastar@v1.0.0-beta.2/bundles/datastar.js"></script>
+    </head>
+    <body>
+      <button#{' '}
+        data-on-click="@get('/')"#{' '}
+        data-indicator-heartbeat#{' '}
+        >Start</button>
+      <p class="counter">Slow thread: <span id="slow">waiting</span></p>
+      <p class="counter">Fast thread: <span id="fast">waiting</span></p>
+      <p id="connection">Disconnected...</p>
+    </body>
+  <html>
+HTML
+
+trap('INT') { exit }
+
+run do |env|
+  # Initialize Datastar with callbacks
+  datastar = Datastar
+             .from_rack_env(env)
+             .on_connect do |sse|
+    sse.merge_fragments(%(<p id="connection">Connected...</p>))
+    p ['connect', sse]
+  end.on_server_disconnect do |sse|
+    sse.merge_fragments(%(<p id="connection">Done...</p>))
+    p ['server disconnect', sse]
+  end.on_client_disconnect do |socket|
+    p ['client disconnect', socket]
+  end.on_error do |error|
+    p ['exception', error]
+    puts error.backtrace.join("\n")
+  end
+
+  if datastar.sse?
+    # This will run in its own thread / fiber
+    datastar.stream do |sse|
+      11.times do |i|
+        sleep 1
+        # Raising an error to demonstrate error handling
+        # raise ArgumentError, 'This is an error' if i > 5
+
+        sse.merge_fragments(%(<span id="slow">#{i}</span>))
+      end
+    end
+
+    # Another thread / fiber
+    datastar.stream do |sse|
+      1000.times do |i|
+        sleep 0.01
+        sse.merge_fragments(%(<span id="fast">#{i}</span>))
+      end
+    end
+  else
+    [200, { 'content-type' => 'text/html' }, [INDEX]]
+  end
+end
diff --git a/examples/ruby/threads/Gemfile b/examples/ruby/threads/Gemfile
new file mode 100644
index 000000000..27d6a9d92
--- /dev/null
+++ b/examples/ruby/threads/Gemfile
@@ -0,0 +1,8 @@
+# frozen_string_literal: true
+
+source 'https://rubygems.org'
+
+gem 'puma'
+gem 'rack'
+# gem 'datastar'
+gem 'datastar', path: '../../../sdk/ruby'
diff --git a/examples/ruby/threads/Gemfile.lock b/examples/ruby/threads/Gemfile.lock
new file mode 100644
index 000000000..83df723bf
--- /dev/null
+++ b/examples/ruby/threads/Gemfile.lock
@@ -0,0 +1,25 @@
+PATH
+  remote: ../../../sdk/ruby
+  specs:
+    datastar (1.0.0.beta.1)
+      rack (~> 3.0)
+
+GEM
+  remote: https://rubygems.org/
+  specs:
+    nio4r (2.7.4)
+    puma (6.6.0)
+      nio4r (~> 2.0)
+    rack (3.1.9)
+
+PLATFORMS
+  arm64-darwin-24
+  ruby
+
+DEPENDENCIES
+  datastar!
+  puma
+  rack
+
+BUNDLED WITH
+   2.6.3
diff --git a/examples/ruby/threads/threads.ru b/examples/ruby/threads/threads.ru
new file mode 100644
index 000000000..425174dae
--- /dev/null
+++ b/examples/ruby/threads/threads.ru
@@ -0,0 +1,84 @@
+require 'bundler/setup'
+
+require 'datastar'
+
+# This is a test Rack endpoint
+# to demo streaming Datastar updates from multiple threads.
+# To run:
+#
+#   # install dependencies
+#   bundle install
+#   # run this endpoint with Puma server
+#   bundle exec puma examples/threaded.ru
+#
+#   visit http://localhost:9292
+#
+INDEX = <<~HTML
+  <!DOCTYPE html>
+  <html>
+    <head>
+      <meta charset="UTF-8">
+      <title>Datastar counter</title>
+      <style>
+        body { padding: 10em; }
+        .counter {#{' '}
+          font-size: 2em;#{' '}
+          span { font-weight: bold; }
+        }
+      </style>
+      <script type="module" src="https://cdn.jsdelivr.net/gh/starfederation/datastar@v1.0.0-beta.2/bundles/datastar.js"></script>
+    </head>
+    <body>
+      <button#{' '}
+        data-on-click="@get('/')"#{' '}
+        data-indicator-heartbeat#{' '}
+        >Start</button>
+      <p class="counter">Slow thread: <span id="slow">waiting</span></p>
+      <p class="counter">Fast thread: <span id="fast">waiting</span></p>
+      <p id="connection">Disconnected...</p>
+    </body>
+  <html>
+HTML
+
+trap('INT') { exit }
+
+run do |env|
+  # Initialize Datastar with callbacks
+  datastar = Datastar
+             .from_rack_env(env)
+             .on_connect do |sse|
+    sse.merge_fragments(%(<p id="connection">Connected...</p>))
+    p ['connect', sse]
+  end.on_server_disconnect do |sse|
+    sse.merge_fragments(%(<p id="connection">Done...</p>))
+    p ['server disconnect', sse]
+  end.on_client_disconnect do |socket|
+    p ['client disconnect', socket]
+  end.on_error do |error|
+    p ['exception', error]
+    puts error.backtrace.join("\n")
+  end
+
+  if datastar.sse?
+    # This will run in its own thread / fiber
+    datastar.stream do |sse|
+      11.times do |i|
+        sleep 1
+        # Raising an error to demonstrate error handling
+        # raise ArgumentError, 'This is an error' if i > 5
+
+        sse.merge_fragments(%(<span id="slow">#{i}</span>))
+      end
+    end
+
+    # Another thread / fiber
+    datastar.stream do |sse|
+      1000.times do |i|
+        sleep 0.01
+        sse.merge_fragments(%(<span id="fast">#{i}</span>))
+      end
+    end
+  else
+    [200, { 'content-type' => 'text/html' }, [INDEX]]
+  end
+end
diff --git a/sdk/ruby/.gitignore b/sdk/ruby/.gitignore
new file mode 100644
index 000000000..b04a8c840
--- /dev/null
+++ b/sdk/ruby/.gitignore
@@ -0,0 +1,11 @@
+/.bundle/
+/.yardoc
+/_yardoc/
+/coverage/
+/doc/
+/pkg/
+/spec/reports/
+/tmp/
+
+# rspec failure tracking
+.rspec_status
diff --git a/sdk/ruby/.rspec b/sdk/ruby/.rspec
new file mode 100644
index 000000000..34c5164d9
--- /dev/null
+++ b/sdk/ruby/.rspec
@@ -0,0 +1,3 @@
+--format documentation
+--color
+--require spec_helper
diff --git a/sdk/ruby/Gemfile b/sdk/ruby/Gemfile
new file mode 100644
index 000000000..b8f8aabf3
--- /dev/null
+++ b/sdk/ruby/Gemfile
@@ -0,0 +1,19 @@
+# frozen_string_literal: true
+
+source 'https://rubygems.org'
+
+# Specify your gem's dependencies in datastar.gemspec
+gemspec
+
+gem 'rake', '~> 13.0'
+
+gem 'rspec', '~> 3.0'
+
+gem 'debug'
+
+group :test do
+  # Async to test Datastar::AsyncExecutor
+  gem 'async'
+  # Puma to host test server
+  gem 'puma'
+end
diff --git a/sdk/ruby/Gemfile.lock b/sdk/ruby/Gemfile.lock
new file mode 100644
index 000000000..cb252369c
--- /dev/null
+++ b/sdk/ruby/Gemfile.lock
@@ -0,0 +1,81 @@
+PATH
+  remote: .
+  specs:
+    datastar (1.0.0.beta.1)
+      rack (~> 3.0)
+
+GEM
+  remote: https://rubygems.org/
+  specs:
+    async (2.21.3)
+      console (~> 1.29)
+      fiber-annotation
+      io-event (~> 1.7)
+      metrics (~> 0.12)
+      traces (~> 0.15)
+    console (1.29.2)
+      fiber-annotation
+      fiber-local (~> 1.1)
+      json
+    date (3.4.1)
+    debug (1.10.0)
+      irb (~> 1.10)
+      reline (>= 0.3.8)
+    diff-lcs (1.5.1)
+    fiber-annotation (0.2.0)
+    fiber-local (1.1.0)
+      fiber-storage
+    fiber-storage (1.0.0)
+    io-console (0.8.0)
+    io-event (1.7.5)
+    irb (1.15.1)
+      pp (>= 0.6.0)
+      rdoc (>= 4.0.0)
+      reline (>= 0.4.2)
+    json (2.9.1)
+    metrics (0.12.1)
+    nio4r (2.7.4)
+    pp (0.6.2)
+      prettyprint
+    prettyprint (0.2.0)
+    psych (5.2.3)
+      date
+      stringio
+    puma (6.6.0)
+      nio4r (~> 2.0)
+    rack (3.1.9)
+    rake (13.2.1)
+    rdoc (6.11.0)
+      psych (>= 4.0.0)
+    reline (0.6.0)
+      io-console (~> 0.5)
+    rspec (3.13.0)
+      rspec-core (~> 3.13.0)
+      rspec-expectations (~> 3.13.0)
+      rspec-mocks (~> 3.13.0)
+    rspec-core (3.13.2)
+      rspec-support (~> 3.13.0)
+    rspec-expectations (3.13.3)
+      diff-lcs (>= 1.2.0, < 2.0)
+      rspec-support (~> 3.13.0)
+    rspec-mocks (3.13.2)
+      diff-lcs (>= 1.2.0, < 2.0)
+      rspec-support (~> 3.13.0)
+    rspec-support (3.13.2)
+    stringio (3.1.2)
+    traces (0.15.2)
+
+PLATFORMS
+  arm64-darwin-24
+  ruby
+
+DEPENDENCIES
+  async
+  datastar!
+  debug
+  puma
+  rake (~> 13.0)
+  rspec (~> 3.0)
+
+BUNDLED WITH
+   2.5.23
diff --git a/sdk/ruby/README.md b/sdk/ruby/README.md
new file mode 100644
index 000000000..24cf919ef
--- /dev/null
+++ b/sdk/ruby/README.md
@@ -0,0 +1,256 @@
+# Datastar Ruby SDK
+
+Implement the [Datastart SSE procotocol](https://data-star.dev/reference/sse_events) in Ruby. It can be used in any Rack handler, and Rails controllers.
+
+## Installation
+
+Install the gem and add to the application's Gemfile by executing:
+
+```bash
+bundle add datastar
+```
+
+Or point your `Gemfile` to the source
+
+```bash
+gem 'datastar', git: 'https://github.com/starfederation/datastar', glob: 'sdk/ruby/*.gemspec'
+```
+
+## Usage
+
+### Initialize the Datastar dispatcher
+
+In your Rack handler or Rails controller:
+
+```ruby
+# Rails controllers, as well as Sinatra and others, 
+# already have request and response objects
+
+datastar = Datastar.new(request:, response:, view_context: self)
+
+# In a Rack handler, you can instantiate from the Rack env
+datastar = Datastar.from_rack_env(env)
+```
+
+### Sending updates to the browser
+
+There are two ways to use this gem in HTTP handlers:
+
+* One-off responses, where you want to send a single update down to the browser.
+* Streaming responses, where you want to send multiple updates down to the browser.
+
+#### One-off update:
+
+```ruby
+datastar.merge_fragments(%(<h1 id="title">Hello, World!</h1>))
+```
+In this mode, the response is closed after the fragment is sent.
+
+#### Streaming updates
+
+```ruby
+datastar.stream do |sse|
+  sse.merge_fragments(%(<h1 id="title">Hello, World!</h1>))
+  # Streaming multiple updates
+  100.times do |i|
+    sleep 1
+    sse.merge_fragments(%(<h1 id="title">Hello, World #{i}!</h1>))
+  end
+end
+```
+In this mode, the response is kept open until `stream` blocks have finished.
+
+#### Concurrent streaming blocks
+
+Multiple `stream` blocks will be launched in threads/fibers, and will run concurrently.
+Their updates are linearized and sent to the browser as they are produced.
+
+```ruby
+# Stream to the browser from two concurrent threads
+datastar.stream do |sse|
+  100.times do |i|
+    sleep 1
+    sse.merge_fragments(%(<h1 id="slow">#{i}!</h1>))
+  end
+end
+
+datastar.stream do |sse|
+  1000.times do |i|
+    sleep 0.1
+    sse.merge_fragments(%(<h1 id="fast">#{i}!</h1>))
+  end
+end
+```
+
+See the [examples](https://github.com/starfederation/datastar/tree/main/examples/ruby) directory.
+
+### Datastar methods
+
+All these methods are available in both the one-off and the streaming modes.
+
+#### `merge_fragments`
+See https://data-star.dev/reference/sse_events#datastar-merge-fragments
+
+```ruby
+sse.merge_fragments(%(<div id="foo">\n<span>hello</span>\n</div>))
+
+# or a Phlex view object
+sse.merge_fragments(UserComponet.new)
+
+# Or pass options
+sse.merge_fragments(
+  %(<div id="foo">\n<span>hello</span>\n</div>),
+  merge_mode: 'append'
+)
+```
+
+#### `remove_fragments`
+ See https://data-star.dev/reference/sse_events#datastar-remove-fragments
+
+```ruby
+sse.remove_fragments('#users')
+```
+
+#### `merge_signals`
+ See https://data-star.dev/reference/sse_events#datastar-merge-signals
+
+```ruby
+sse.merge_signals(count: 4, user: { name: 'John' })
+```
+
+#### `remove_signals`
+ See https://data-star.dev/reference/sse_events#datastar-remove-signals
+
+```ruby
+sse.remove_signals(['user.name', 'user.email'])
+```
+
+#### `execute_script`
+See https://data-star.dev/reference/sse_events#datastar-execute-script
+
+```ruby
+sse.execute_scriprt(%(alert('Hello World!'))
+ ```
+
+#### `signals`
+See https://data-star.dev/guide/getting_started#data-signals
+
+Returns signals sent by the browser.
+
+```ruby
+sse.signals # => { user: { name: 'John' } }
+ ```
+
+#### `redirect`
+This is just a helper to send a script to update the browser's location.
+
+```ruby
+sse.redirect('/new_location')
+ ```
+
+### Lifecycle callbacks
+
+#### `on_connect`
+Register server-side code to run when the connection is first handled.
+
+```ruby
+datastar.on_connect do
+  puts 'A user has connected'
+end
+```
+
+#### `on_client_disconnect`
+Register server-side code to run when the connection is closed by the client
+
+```ruby
+datastar.on_client_connect do
+  puts 'A user has disconnected connected'
+end
+```
+
+#### `on_server_disconnect`
+Register server-side code to run when the connection is closed by the server.
+Ie when the served is done streaming without errors.
+
+```ruby
+datastar.on_server_connect do
+  puts 'Server is done streaming'
+end
+```
+
+#### `on_error`
+Ruby code to handle any exceptions raised by streaming blocks.
+
+```ruby
+datastar.on_error do |exception|
+  Sentry.notify(exception)
+end
+```
+Note that this callback can be registered globally, too.
+
+### Global configuration
+
+```ruby
+Datastar.configure do |config|
+  config.on_error do |exception|
+    Sentry.notify(exception)
+  end
+end
+```
+
+### Rails
+
+#### Rendering Rails templates
+
+```ruby
+datastar.stream do |sse|
+  10.times do |i|
+    sleep 1
+    tpl = render_to_string('events/user', layout: false, locals: { name: "David #{i}" })
+    sse.merge_fragments tpl
+  end
+end
+```
+
+#### Rendering Phlex components
+
+`#merge_fragments` supports [Phlex](https://www.phlex.fun) component instances.
+
+```ruby
+sse.merge_fragments(UserComponent.new(user: User.first))
+```
+
+### Tests
+
+```ruby
+bundle exec rspec
+```
+
+#### Running Datastar's SDK test suite
+
+Install dependencies.
+```bash
+bundle install
+```
+
+From this library's root, run the bundled-in test Rack app:
+
+```bash
+bundle puma examples/test.ru
+```
+
+Now run the test bash scripts in the `test` directory in this repo.
+
+```bash
+./test-all.sh http://localhost:9292
+```
+
+## Development
+
+After checking out the repo, run `bin/setup` to install dependencies. Then, run `rake spec` to run the tests. You can also run `bin/console` for an interactive prompt that will allow you to experiment.
+
+To install this gem onto your local machine, run `bundle exec rake install`. To release a new version, update the version number in `version.rb`, and then run `bundle exec rake release`, which will create a git tag for the version, push git commits and the created tag, and push the `.gem` file to [rubygems.org](https://rubygems.org).
+
+## Contributing
+
+Bug reports and pull requests are welcome on GitHub at https://github.com/starfederation/datastar.
diff --git a/sdk/ruby/Rakefile b/sdk/ruby/Rakefile
new file mode 100644
index 000000000..b6ae73410
--- /dev/null
+++ b/sdk/ruby/Rakefile
@@ -0,0 +1,8 @@
+# frozen_string_literal: true
+
+require "bundler/gem_tasks"
+require "rspec/core/rake_task"
+
+RSpec::Core::RakeTask.new(:spec)
+
+task default: :spec
diff --git a/sdk/ruby/bin/console b/sdk/ruby/bin/console
new file mode 100755
index 000000000..3b74ca07d
--- /dev/null
+++ b/sdk/ruby/bin/console
@@ -0,0 +1,11 @@
+#!/usr/bin/env ruby
+# frozen_string_literal: true
+
+require "bundler/setup"
+require "datastar"
+
+# You can add fixtures and/or initialization code here to make experimenting
+# with your gem easier. You can also use a different console, if you like.
+
+require "irb"
+IRB.start(__FILE__)
diff --git a/sdk/ruby/bin/setup b/sdk/ruby/bin/setup
new file mode 100755
index 000000000..dce67d860
--- /dev/null
+++ b/sdk/ruby/bin/setup
@@ -0,0 +1,8 @@
+#!/usr/bin/env bash
+set -euo pipefail
+IFS=$'\n\t'
+set -vx
+
+bundle install
+
+# Do any other automated setup that you need to do here
diff --git a/sdk/ruby/datastar.gemspec b/sdk/ruby/datastar.gemspec
new file mode 100644
index 000000000..1b668cc7d
--- /dev/null
+++ b/sdk/ruby/datastar.gemspec
@@ -0,0 +1,36 @@
+# frozen_string_literal: true
+
+require_relative 'lib/datastar/version'
+
+Gem::Specification.new do |spec|
+  spec.name = 'datastar'
+  spec.version = Datastar::VERSION
+  spec.authors = ['Ismael Celis']
+  spec.email = ['ismaelct@gmail.com']
+
+  spec.summary = 'Ruby SDK for Datastar. Rack-compatible.'
+  spec.homepage = 'https://github.com/starfederation/datastar#readme'
+  spec.required_ruby_version = '>= 3.0.0'
+
+  spec.metadata['homepage_uri'] = spec.homepage
+  spec.metadata['source_code_uri'] = 'https://github.com/starfederation/datastar'
+
+  # Specify which files should be added to the gem when it is released.
+  # The `git ls-files -z` loads the files in the RubyGem that have been added into git.
+  gemspec = File.basename(__FILE__)
+  spec.files = IO.popen(%w[git ls-files -z], chdir: __dir__, err: IO::NULL) do |ls|
+    ls.readlines("\x0", chomp: true).reject do |f|
+      (f == gemspec) ||
+        f.start_with?(*%w[bin/ test/ spec/ features/ .git appveyor Gemfile])
+    end
+  end
+  spec.bindir = 'exe'
+  spec.executables = spec.files.grep(%r{\Aexe/}) { |f| File.basename(f) }
+  spec.require_paths = ['lib']
+
+  # Uncomment to register a new dependency of your gem
+  spec.add_dependency 'rack', '~> 3.0'
+
+  # For more information and examples about making a new gem, check out our
+  # guide at: https://bundler.io/guides/creating_gem.html
+end
diff --git a/sdk/ruby/examples/test.ru b/sdk/ruby/examples/test.ru
new file mode 100644
index 000000000..4e505ecf6
--- /dev/null
+++ b/sdk/ruby/examples/test.ru
@@ -0,0 +1,56 @@
+require 'bundler'
+Bundler.setup(:test)
+
+require 'datastar'
+
+# This is a test Rack endpoint to run
+# Datastar's SDK test suite agains.
+# To run:
+#
+#   # install dependencies
+#   bundle install
+#   # run this endpoint with Puma server
+#   bundle exec puma examples/test.ru
+#
+# Then you can run SDK's test bash script:
+# See https://github.com/starfederation/datastar/blob/develop/sdk/test/README.md
+#
+#   ./test-all.sh http://localhost:9292
+#
+run do |env|
+  datastar = Datastar
+             .from_rack_env(env)
+             .on_connect do |socket|
+    p ['connect', socket]
+  end.on_server_disconnect do |socket|
+    p ['server disconnect', socket]
+  end.on_client_disconnect do |socket|
+    p ['client disconnect', socket]
+  end.on_error do |error|
+    p ['exception', error]
+    puts error.backtrace.join("\n")
+  end
+
+  datastar.stream do |sse|
+    sse.signals['events'].each do |event|
+      type = event.delete('type')
+      case type
+      when 'mergeSignals'
+        arg = event.delete('signals')
+        sse.merge_signals(arg, event)
+      when 'removeSignals'
+        arg = event.delete('paths')
+        sse.remove_signals(arg, event)
+      when 'executeScript'
+        arg = event.delete('script')
+        sse.execute_script(arg, event)
+      when 'mergeFragments'
+        arg = event.delete('fragments')
+        sse.merge_fragments(arg, event)
+      when 'removeFragments'
+        arg = event.delete('selector')
+        sse.remove_fragments(arg, event)
+      end
+    end
+  end
+end
diff --git a/sdk/ruby/lib/datastar.rb b/sdk/ruby/lib/datastar.rb
new file mode 100644
index 000000000..8441a3df4
--- /dev/null
+++ b/sdk/ruby/lib/datastar.rb
@@ -0,0 +1,32 @@
+# frozen_string_literal: true
+
+require_relative 'datastar/version'
+require_relative 'datastar/consts'
+
+module Datastar
+  BLANK_OPTIONS = {}.freeze
+
+  def self.config
+    @config ||= Configuration.new
+  end
+
+  def self.configure(&)
+    yield config if block_given?
+    config.freeze
+    config
+  end
+
+  def self.new(...)
+    Dispatcher.new(...)
+  end
+
+  def self.from_rack_env(env, view_context: nil)
+    request = Rack::Request.new(env)
+    Dispatcher.new(request:, view_context:)
+  end
+end
+
+require_relative 'datastar/configuration'
+require_relative 'datastar/dispatcher'
+require_relative 'datastar/server_sent_event_generator'
+require_relative 'datastar/railtie' if defined?(Rails::Railtie)
diff --git a/sdk/ruby/lib/datastar/async_executor.rb b/sdk/ruby/lib/datastar/async_executor.rb
new file mode 100644
index 000000000..9faab1515
--- /dev/null
+++ b/sdk/ruby/lib/datastar/async_executor.rb
@@ -0,0 +1,35 @@
+# frozen_string_literal: true
+
+require 'async'
+require 'async/queue'
+
+module Datastar
+  # An executor that uses Fibers (via the Async library)
+  # Use this when Rails is configured to use Fibers
+  # or when using the Falcon web server
+  # See https://github.com/socketry/falcon
+  class AsyncExecutor
+    def initialize
+      # Async::Task instances
+      # that raise exceptions log
+      # the error with :warn level,
+      # even if the exception is handled upstream
+      # See https://github.com/socketry/async/blob/9851cb945ae49a85375d120219000fe7db457307/lib/async/task.rb#L204
+      # Not great to silence these logs for ALL tasks
+      # in a Rails app (I only want to silence them for Datastar tasks)
+      Console.logger.disable(Async::Task)
+    end
+
+    def new_queue = Async::Queue.new
+
+    def prepare(response); end
+
+    def spawn(&block)
+      Async(&block)
+    end
+
+    def stop(threads)
+      threads.each(&:stop)
+    end
+  end
+end
diff --git a/sdk/ruby/lib/datastar/configuration.rb b/sdk/ruby/lib/datastar/configuration.rb
new file mode 100644
index 000000000..6edbdff8a
--- /dev/null
+++ b/sdk/ruby/lib/datastar/configuration.rb
@@ -0,0 +1,49 @@
+# frozen_string_literal: true
+
+require 'thread'
+
+module Datastar
+  # The default executor based on Ruby threads
+  class ThreadExecutor
+    def new_queue = Queue.new
+
+    def prepare(response); end
+
+    def spawn(&block)
+      Thread.new(&block)
+    end
+
+    def stop(threads)
+      threads.each(&:kill)
+    end
+  end
+
+  # Datastar configuration
+  # @example
+  #
+  #  Datastar.configure do |config|
+  #    config.on_error do |error|
+  #      Sentry.notify(error)
+  #    end
+  #  end
+  #
+  # You'd normally do this on app initialization 
+  # For example in a Rails initializer
+  class Configuration
+    NOOP_CALLBACK = ->(_error) {}
+    RACK_FINALIZE = ->(_view_context, response) { response.finish }
+
+    attr_accessor :executor, :error_callback, :finalize
+
+    def initialize
+      @executor = ThreadExecutor.new
+      @error_callback = NOOP_CALLBACK
+      @finalize = RACK_FINALIZE
+    end
+
+    def on_error(callable = nil, &block)
+      @error_callback = callable || block
+      self
+    end
+  end
+end
diff --git a/sdk/ruby/lib/datastar/consts.rb b/sdk/ruby/lib/datastar/consts.rb
new file mode 100644
index 000000000..80bef754d
--- /dev/null
+++ b/sdk/ruby/lib/datastar/consts.rb
@@ -0,0 +1,70 @@
+# frozen_string_literal: true
+
+# This is auto-generated by Datastar. DO NOT EDIT.
+module Datastar
+  module Consts
+    DATASTAR_KEY = 'datastar'
+    VERSION = '1.0.0-beta.3'
+
+    # The default duration for settling during fragment merges. Allows for CSS transitions to complete.
+    DEFAULT_FRAGMENTS_SETTLE_DURATION = 300
+
+    # The default duration for retrying SSE on connection reset. This is part of the underlying retry mechanism of SSE.
+    DEFAULT_SSE_RETRY_DURATION = 1000
+
+    # Should fragments be merged using the ViewTransition API?
+    DEFAULT_FRAGMENTS_USE_VIEW_TRANSITIONS = false
+
+    # Should a given set of signals merge if they are missing?
+    DEFAULT_MERGE_SIGNALS_ONLY_IF_MISSING = false
+
+    # Should script element remove itself after execution?
+    DEFAULT_EXECUTE_SCRIPT_AUTO_REMOVE = true
+
+    # The default attributes for <script/> element use when executing scripts. It is a set of key-value pairs delimited by a newline \\n character.}
+    DEFAULT_EXECUTE_SCRIPT_ATTRIBUTES = 'type module'
+
+    module FragmentMergeMode
+
+      # Morphs the fragment into the existing element using idiomorph.
+      MORPH = 'morph'
+
+      # Replaces the inner HTML of the existing element.
+      INNER = 'inner'
+
+      # Replaces the outer HTML of the existing element.
+      OUTER = 'outer'
+
+      # Prepends the fragment to the existing element.
+      PREPEND = 'prepend'
+
+      # Appends the fragment to the existing element.
+      APPEND = 'append'
+
+      # Inserts the fragment before the existing element.
+      BEFORE = 'before'
+
+      # Inserts the fragment after the existing element.
+      AFTER = 'after'
+
+      # Upserts the attributes of the existing element.
+      UPSERT_ATTRIBUTES = 'upsertAttributes'
+    end
+
+    # The mode in which a fragment is merged into the DOM.
+    DEFAULT_FRAGMENT_MERGE_MODE = FragmentMergeMode::MORPH
+
+    # Dataline literals.
+    SELECTOR_DATALINE_LITERAL = 'selector'
+    MERGE_MODE_DATALINE_LITERAL = 'mergeMode'
+    SETTLE_DURATION_DATALINE_LITERAL = 'settleDuration'
+    FRAGMENTS_DATALINE_LITERAL = 'fragments'
+    USE_VIEW_TRANSITION_DATALINE_LITERAL = 'useViewTransition'
+    SIGNALS_DATALINE_LITERAL = 'signals'
+    ONLY_IF_MISSING_DATALINE_LITERAL = 'onlyIfMissing'
+    PATHS_DATALINE_LITERAL = 'paths'
+    SCRIPT_DATALINE_LITERAL = 'script'
+    ATTRIBUTES_DATALINE_LITERAL = 'attributes'
+    AUTO_REMOVE_DATALINE_LITERAL = 'autoRemove'
+  end
+end
\ No newline at end of file
diff --git a/sdk/ruby/lib/datastar/dispatcher.rb b/sdk/ruby/lib/datastar/dispatcher.rb
new file mode 100644
index 000000000..20e5b9c24
--- /dev/null
+++ b/sdk/ruby/lib/datastar/dispatcher.rb
@@ -0,0 +1,361 @@
+# frozen_string_literal: true
+
+module Datastar
+  # The Dispatcher encapsulates the logic of handling a request
+  # and building a response with streaming datastar messages.
+  # You'll normally instantiate a Dispatcher in your controller action of Rack handler
+  # via Datastar.new.
+  # @example
+  #
+  #  datastar = Datastar.new(request:, response:, view_context: self)
+  #
+  #  # One-off fragment response
+  #  datastar.merge_fragments(template)
+  #
+  #  # Streaming response with multiple messages
+  #  datastar.stream do |sse|
+  #    sse.merge_fragments(template)
+  #    10.times do |i|
+  #      sleep 0.1
+  #      sse.merge_signals(count: i)
+  #    end
+  #  end
+  #
+  class Dispatcher
+    BLANK_BODY = [].freeze
+    SSE_CONTENT_TYPE = 'text/event-stream'
+    HTTP_ACCEPT = 'HTTP_ACCEPT'
+    HTTP1 = 'HTTP/1.1'
+
+    attr_reader :request, :response
+
+    # @option request [Rack::Request] the request object
+    # @option response [Rack::Response, nil] the response object
+    # @option view_context [Object, nil] the view context object, to use when rendering templates. Ie. a controller, or Sinatra app.
+    # @option executor [Object] the executor object to use for managing threads and queues
+    # @option error_callback [Proc] the callback to call when an error occurs
+    # @option finalize [Proc] the callback to call when the response is finalized
+    def initialize(
+      request:,
+      response: nil,
+      view_context: nil,
+      executor: Datastar.config.executor,
+      error_callback: Datastar.config.error_callback,
+      finalize: Datastar.config.finalize
+    )
+      @on_connect = []
+      @on_client_disconnect = []
+      @on_server_disconnect = []
+      @on_error = [error_callback]
+      @finalize = finalize
+      @streamers = []
+      @queue = nil
+      @executor = executor
+      @view_context = view_context
+      @request = request
+      @response = Rack::Response.new(BLANK_BODY, 200, response&.headers || {})
+      @response.content_type = SSE_CONTENT_TYPE
+      @response.headers['Cache-Control'] = 'no-cache'
+      @response.headers['Connection'] = 'keep-alive' if @request.env['SERVER_PROTOCOL'] == HTTP1
+      # Disable response buffering in NGinx and other proxies
+      @response.headers['X-Accel-Buffering'] = 'no'
+      @response.delete_header 'Content-Length'
+      @executor.prepare(@response)
+    end
+
+    # Check if the request accepts SSE responses
+    # @return [Boolean]
+    def sse?
+      @request.get_header(HTTP_ACCEPT) == SSE_CONTENT_TYPE
+    end
+
+    # Register an on-connect callback
+    # Triggered when the request is handled
+    # @param callable [Proc, nil] the callback to call
+    # @yieldparam sse [ServerSentEventGenerator] the generator object
+    # @return [self]
+    def on_connect(callable = nil, &block)
+      @on_connect << (callable || block)
+      self
+    end
+
+    # Register a callback for client disconnection
+    # Ex. when the browser is closed mid-stream
+    # @param callable [Proc, nil] the callback to call
+    # @return [self]
+    def on_client_disconnect(callable = nil, &block)
+      @on_client_disconnect << (callable || block)
+      self
+    end
+
+    # Register a callback for server disconnection
+    # Ex. when the server finishes serving the request
+    # @param callable [Proc, nil] the callback to call
+    # @return [self]
+    def on_server_disconnect(callable = nil, &block)
+      @on_server_disconnect << (callable || block)
+      self
+    end
+
+    # Register a callback server-side exceptions
+    # Ex. when one of the server threads raises an exception
+    # @param callable [Proc, nil] the callback to call
+    # @return [self]
+    def on_error(callable = nil, &block)
+      @on_error << (callable || block)
+      self
+    end
+
+    # Parse and returns Datastar signals sent by the client.
+    # See https://data-star.dev/guide/getting_started#data-signals
+    # @return [Hash]
+    def signals
+      @signals ||= parse_signals(request).freeze
+    end
+
+    # Send one-off fragments to the UI
+    # See https://data-star.dev/reference/sse_events#datastar-merge-fragments
+    # @example
+    #
+    #  datastar.merge_fragments(%(<div id="foo">\n<span>hello</span>\n</div>\n))
+    #  # or a Phlex view object
+    #  datastar.merge_fragments(UserComponet.new)
+    #
+    # @param fragments [String, #call(view_context: Object) => Object] the HTML fragment or object
+    # @param options [Hash] the options to send with the message
+    def merge_fragments(fragments, options = BLANK_OPTIONS)
+      stream do |sse|
+        sse.merge_fragments(fragments, options)
+      end
+    end
+
+    # One-off remove fragments from the UI
+    # See https://data-star.dev/reference/sse_events#datastar-remove-fragments
+    # @example
+    #
+    #  datastar.remove_fragments('#users')
+    #
+    # @param selector [String] a CSS selector for the fragment to remove
+    # @param options [Hash] the options to send with the message
+    def remove_fragments(selector, options = BLANK_OPTIONS)
+      stream do |sse|
+        sse.remove_fragments(selector, options)
+      end
+    end
+
+    # One-off merge signals in the UI
+    # See https://data-star.dev/reference/sse_events#datastar-merge-signals
+    # @example
+    #
+    #  datastar.merge_signals(count: 1, toggle: true)
+    #
+    # @param signals [Hash] signals to merge
+    # @param options [Hash] the options to send with the message
+    def merge_signals(signals, options = BLANK_OPTIONS)
+      stream do |sse|
+        sse.merge_signals(signals, options)
+      end
+    end
+
+    # One-off remove signals from the UI
+    # See https://data-star.dev/reference/sse_events#datastar-remove-signals
+    # @example
+    #
+    #  datastar.remove_signals(['user.name', 'user.email'])
+    #
+    # @param paths [Array<String>] object paths to the signals to remove
+    # @param options [Hash] the options to send with the message
+    def remove_signals(paths, options = BLANK_OPTIONS)
+      stream do |sse|
+        sse.remove_signals(paths, options)
+      end
+    end
+
+    # One-off execute script in the UI
+    # See https://data-star.dev/reference/sse_events#datastar-execute-script
+    # @example
+    #
+    #  datastar.execute_scriprt(%(alert('Hello World!'))
+    #
+    # @param script [String] the script to execute
+    # @param options [Hash] the options to send with the message
+    def execute_script(script, options = BLANK_OPTIONS)
+      stream do |sse|
+        sse.execute_script(script, options)
+      end
+    end
+
+    # Send an execute_script event
+    # to change window.location
+    #
+    # @param url [String] the URL or path to redirect to
+    def redirect(url)
+      stream do |sse|
+        sse.redirect(url)
+      end
+    end
+
+    # Start a streaming response
+    # A generator object is passed to the block
+    # The generator supports all the Datastar methods listed above (it's the same type)
+    # But you can call them multiple times to send multiple messages down an open SSE connection.
+    # @example
+    #
+    #  datastar.stream do |sse|
+    #    total = 300
+    #    sse.merge_fragments(%(<progress data-signal-progress="0" id="progress" max="#{total}" data-attr-value="$progress">0</progress>))
+    #    total.times do |i|
+    #      sse.merge_signals(progress: i)
+    #    end
+    #  end
+    #
+    # This methods also captures exceptions raised in the block and triggers
+    # any error callbacks. Client disconnection errors trigger the @on_client_disconnect callbacks.
+    # Finally, when the block is done streaming, the @on_server_disconnect callbacks are triggered.
+    #
+    # When multiple streams are scheduled this way, 
+    # this SDK will spawn each block in separate threads (or fibers, depending on executor)
+    # and linearize their writes to the connection socket
+    # @example
+    #
+    #  datastar.stream do |sse|
+    #    # update things here
+    #  end
+    #
+    #  datastar.stream do |sse|
+    #    # more concurrent updates here
+    #  end
+    #
+    # As a last step, the finalize callback is called with the view context and the response
+    # This is so that different frameworks can setup their responses correctly.
+    # By default, the built-in Rack finalzer just returns the resposne Array which can be used by any Rack handler.
+    # On Rails, the Rails controller response is set to this objects streaming response.
+    #
+    # @param streamer [#call(ServerSentEventGenerator), nil] a callable to call with the generator
+    # @yieldparam sse [ServerSentEventGenerator] the generator object
+    # @return [Object] depends on the finalize callback
+    def stream(streamer = nil, &block)
+      streamer ||= block
+      @streamers << streamer
+
+      body = if @streamers.size == 1
+        stream_one(streamer) 
+      else
+        stream_many(streamer) 
+      end
+
+      @response.body = body
+      @finalize.call(@view_context, @response)
+    end
+
+    private
+
+    # Produce a response body for a single stream
+    # In this case, the SSE generator can write directly to the socket
+    #
+    # @param streamer [#call(ServerSentEventGenerator)]
+    # @return [Proc]
+    # @api private
+    def stream_one(streamer)
+      proc do |socket|
+        generator = ServerSentEventGenerator.new(socket, signals:, view_context: @view_context)
+        @on_connect.each { |callable| callable.call(generator) }
+        handling_errors(generator, socket) do
+          streamer.call(generator)
+        end
+      ensure
+        socket.close
+      end
+    end
+
+    # Produce a response body for multiple streams
+    # Each "streamer" is spawned in a separate thread
+    # and they write to a shared queue
+    # Then we wait on the queue and write to the socket
+    # In this way we linearize socket writes
+    # Exceptions raised in streamer threads are pushed to the queue
+    # so that the main thread can re-raise them and handle them linearly.
+    #
+    # @param streamer [#call(ServerSentEventGenerator)]
+    # @return [Proc]
+    # @api private
+    def stream_many(streamer)
+      @queue ||= @executor.new_queue
+
+      proc do |socket|
+        signs = signals
+        conn_generator = ServerSentEventGenerator.new(socket, signals: signs, view_context: @view_context)
+        @on_connect.each { |callable| callable.call(conn_generator) }
+
+        threads = @streamers.map do |streamer|
+          @executor.spawn do
+            # TODO: Review thread-safe view context
+            generator = ServerSentEventGenerator.new(@queue, signals: signs, view_context: @view_context)
+            streamer.call(generator)
+            @queue << :done
+          rescue StandardError => e
+            @queue << e
+          end
+        end
+
+        handling_errors(conn_generator, socket) do
+          done_count = 0
+
+          while (data = @queue.pop)
+            if data == :done
+              done_count += 1
+              @queue << nil if done_count == threads.size
+            elsif data.is_a?(Exception)
+              raise data
+            else
+              socket << data
+            end
+          end
+        end
+      ensure
+        @executor.stop(threads) if threads
+        socket.close
+      end
+    end
+
+    # Run a streaming block while handling errors
+    # @param generator [ServerSentEventGenerator]
+    # @param socket [IO]
+    # @yield
+    # @api private
+    def handling_errors(generator, socket, &)
+      yield
+
+      @on_server_disconnect.each { |callable| callable.call(generator) }
+    rescue IOError, Errno::EPIPE, Errno::ECONNRESET => e
+      @on_client_disconnect.each { |callable| callable.call(socket) }
+    rescue Exception => e
+      @on_error.each { |callable| callable.call(e) }
+    end
+
+    # Parse signals from the request
+    # Support Rails requests with already parsed request bodies
+    #
+    # @param request [Rack::Request]
+    # @return [Hash]
+    # @api private
+    def parse_signals(request)
+      if request.post? || request.put? || request.patch?
+        payload = request.env['action_dispatch.request.request_parameters']
+        if payload
+          return payload['event'] || {}
+        elsif request.media_type == 'application/json'
+          request.body.rewind
+          return JSON.parse(request.body.read)
+        elsif request.media_type == 'multipart/form-data'
+          return request.params
+        end
+      else
+        query = request.params['datastar']
+        return query ? JSON.parse(query) : request.params
+      end
+
+      {}
+    end
+  end
+end
diff --git a/sdk/ruby/lib/datastar/rails_async_executor.rb b/sdk/ruby/lib/datastar/rails_async_executor.rb
new file mode 100644
index 000000000..6d981a632
--- /dev/null
+++ b/sdk/ruby/lib/datastar/rails_async_executor.rb
@@ -0,0 +1,17 @@
+# frozen_string_literal: true
+
+require 'datastar/async_executor'
+
+module Datastar
+  class RailsAsyncExecutor < Datastar::AsyncExecutor
+    def prepare(response)
+      response.delete_header 'Connection'
+    end
+
+    def spawn(&block)
+      Async do
+        Rails.application.executor.wrap(&block)
+      end
+    end
+  end
+end
diff --git a/sdk/ruby/lib/datastar/rails_thread_executor.rb b/sdk/ruby/lib/datastar/rails_thread_executor.rb
new file mode 100644
index 000000000..a0e2199e7
--- /dev/null
+++ b/sdk/ruby/lib/datastar/rails_thread_executor.rb
@@ -0,0 +1,12 @@
+# frozen_string_literal: true
+
+module Datastar
+  # See https://guides.rubyonrails.org/threading_and_code_execution.html#wrapping-application-code
+  class RailsThreadExecutor < Datastar::ThreadExecutor
+    def spawn(&block)
+      Thread.new do
+        Rails.application.executor.wrap(&block)
+      end
+    end
+  end
+end
diff --git a/sdk/ruby/lib/datastar/railtie.rb b/sdk/ruby/lib/datastar/railtie.rb
new file mode 100644
index 000000000..8bf4d6cf2
--- /dev/null
+++ b/sdk/ruby/lib/datastar/railtie.rb
@@ -0,0 +1,21 @@
+# frozen_string_literal: true
+
+module Datastar
+  class Railtie < ::Rails::Railtie
+    FINALIZE = proc do |view_context, response|
+      view_context.response = response
+    end
+
+    initializer 'datastar' do |_app|
+      Datastar.config.finalize = FINALIZE
+
+      Datastar.config.executor = if config.active_support.isolation_level == :fiber
+                                   require 'datastar/rails_async_executor'
+                                   RailsAsyncExecutor.new
+                                 else
+                                   require 'datastar/rails_thread_executor'
+                                   RailsThreadExecutor.new
+                                 end
+    end
+  end
+end
diff --git a/sdk/ruby/lib/datastar/server_sent_event_generator.rb b/sdk/ruby/lib/datastar/server_sent_event_generator.rb
new file mode 100644
index 000000000..111e9df68
--- /dev/null
+++ b/sdk/ruby/lib/datastar/server_sent_event_generator.rb
@@ -0,0 +1,124 @@
+# frozen_string_literal: true
+
+require 'json'
+
+module Datastar
+  class ServerSentEventGenerator
+    MSG_END = "\n\n"
+
+    SSE_OPTION_MAPPING = {
+      'eventId' => 'id',
+      'retryDuration' => 'retry',
+      'id' => 'id',
+      'retry' => 'retry',
+    }.freeze
+
+    OPTION_DEFAULTS = {
+      'retry' => Consts::DEFAULT_SSE_RETRY_DURATION,
+      Consts::AUTO_REMOVE_DATALINE_LITERAL => Consts::DEFAULT_EXECUTE_SCRIPT_AUTO_REMOVE,
+      Consts::MERGE_MODE_DATALINE_LITERAL => Consts::DEFAULT_FRAGMENT_MERGE_MODE,
+      Consts::SETTLE_DURATION_DATALINE_LITERAL => Consts::DEFAULT_FRAGMENTS_SETTLE_DURATION,
+      Consts::USE_VIEW_TRANSITION_DATALINE_LITERAL => Consts::DEFAULT_FRAGMENTS_USE_VIEW_TRANSITIONS,
+      Consts::ONLY_IF_MISSING_DATALINE_LITERAL => Consts::DEFAULT_MERGE_SIGNALS_ONLY_IF_MISSING,
+    }.freeze
+
+    # ATTRIBUTE_DEFAULTS = {
+    #   'type' => 'module'
+    # }.freeze
+    ATTRIBUTE_DEFAULTS = Consts::DEFAULT_EXECUTE_SCRIPT_ATTRIBUTES
+      .split("\n")
+      .map { |attr| attr.split(' ') }
+      .to_h
+      .freeze
+
+    attr_reader :signals
+
+    def initialize(stream, signals:, view_context: nil)
+      @stream = stream
+      @signals = signals
+      @view_context = view_context
+    end
+
+    def merge_fragments(fragments, options = BLANK_OPTIONS)
+      # Support Phlex components
+      fragments = fragments.call(view_context:) if fragments.respond_to?(:call)
+      fragment_lines = fragments.to_s.split("\n")
+
+      buffer = +"event: datastar-merge-fragments\n"
+      build_options(options, buffer)
+      fragment_lines.each { |line| buffer << "data: fragments #{line}\n" }
+
+      write(buffer)
+    end
+
+    def remove_fragments(selector, options = BLANK_OPTIONS)
+      buffer = +"event: datastar-remove-fragments\n"
+      build_options(options, buffer)
+      buffer << "data: selector #{selector}\n"
+      write(buffer)
+    end
+
+    def merge_signals(signals, options = BLANK_OPTIONS)
+      signals = JSON.dump(signals) unless signals.is_a?(String)
+
+      buffer = +"event: datastar-merge-signals\n"
+      build_options(options, buffer)
+      buffer << "data: signals #{signals}\n"
+      write(buffer)
+    end
+
+    def remove_signals(paths, options = BLANK_OPTIONS)
+      paths = [paths].flatten
+
+      buffer = +"event: datastar-remove-signals\n"
+      build_options(options, buffer)
+      paths.each { |path| buffer << "data: paths #{path}\n" }
+      write(buffer)
+    end
+
+    def execute_script(script, options = BLANK_OPTIONS)
+      buffer = +"event: datastar-execute-script\n"
+      build_options(options, buffer)
+      scripts = script.to_s.split("\n")
+      scripts.each do |sc|
+        buffer << "data: script #{sc}\n"
+      end
+      write(buffer)
+    end
+
+    def redirect(url)
+      execute_script %(setTimeout(() => { window.location = '#{url}' }))
+    end
+
+    def write(buffer)
+      buffer << MSG_END
+      @stream << buffer
+    end
+
+    private
+
+    attr_reader :view_context, :stream
+
+    def build_options(options, buffer)
+      options.each do |k, v|
+        k = camelize(k)
+        if (sse_key = SSE_OPTION_MAPPING[k])
+          default_value = OPTION_DEFAULTS[sse_key]
+          buffer << "#{sse_key}: #{v}\n" unless v == default_value
+        elsif v.is_a?(Hash)
+          v.each do |kk, vv| 
+            default_value = ATTRIBUTE_DEFAULTS[kk.to_s]
+            buffer << "data: #{k} #{kk} #{vv}\n" unless vv == default_value
+          end
+        else
+          default_value = OPTION_DEFAULTS[k]
+          buffer << "data: #{k} #{v}\n" unless v == default_value
+        end
+      end
+    end
+
+    def camelize(str)
+      str.to_s.split('_').map.with_index { |word, i| i == 0 ? word : word.capitalize }.join
+    end
+  end
+end
diff --git a/sdk/ruby/lib/datastar/version.rb b/sdk/ruby/lib/datastar/version.rb
new file mode 100644
index 000000000..fb88c942d
--- /dev/null
+++ b/sdk/ruby/lib/datastar/version.rb
@@ -0,0 +1,5 @@
+# frozen_string_literal: true
+
+module Datastar
+  VERSION = '1.0.0.beta.1'
+end
diff --git a/sdk/ruby/sig/datastar.rbs b/sdk/ruby/sig/datastar.rbs
new file mode 100644
index 000000000..f6630627f
--- /dev/null
+++ b/sdk/ruby/sig/datastar.rbs
@@ -0,0 +1,4 @@
+module Datastar
+  VERSION: String
+  # See the writing guide of rbs: https://github.com/ruby/rbs#guides
+end
diff --git a/sdk/ruby/spec/dispatcher_spec.rb b/sdk/ruby/spec/dispatcher_spec.rb
new file mode 100644
index 000000000..010f8a928
--- /dev/null
+++ b/sdk/ruby/spec/dispatcher_spec.rb
@@ -0,0 +1,464 @@
+# frozen_string_literal: true
+
+class TestSocket
+  attr_reader :lines, :open
+  def initialize
+    @lines = []
+    @open = true
+  end
+
+  def <<(line)
+    @lines << line
+  end
+
+  def close = @open = false
+end
+
+RSpec.describe Datastar::Dispatcher do
+  include DispatcherExamples
+
+  subject(:dispatcher) { Datastar.new(request:, response:, view_context:) }
+
+  let(:request) { build_request('/events') }
+  let(:response) { Rack::Response.new(nil, 200) }
+  let(:view_context) { double('View context') }
+
+  describe '#initialize' do
+    it 'sets Content-Type to text/event-stream' do
+      expect(dispatcher.response['Content-Type']).to eq('text/event-stream')
+    end
+
+    it 'sets Cache-Control to no-cache' do
+      expect(dispatcher.response['Cache-Control']).to eq('no-cache')
+    end
+
+    it 'sets Connection to keep-alive' do
+      expect(dispatcher.response['Connection']).to eq('keep-alive')
+    end
+
+    it 'sets X-Accel-Buffering: no for NGinx and other proxies' do
+      expect(dispatcher.response['X-Accel-Buffering']).to eq('no')
+    end
+
+    it 'does not set Connection header if not HTTP/1.1' do
+      request.env['SERVER_PROTOCOL'] = 'HTTP/2.0'
+      expect(dispatcher.response['Connection']).to be_nil
+    end
+  end
+
+  specify '.from_rack_env' do
+    dispatcher = Datastar.from_rack_env(request.env)
+
+    expect(dispatcher.response['Content-Type']).to eq('text/event-stream')
+    expect(dispatcher.response['Cache-Control']).to eq('no-cache')
+    expect(dispatcher.response['Connection']).to eq('keep-alive')
+  end
+
+  specify '#sse?' do
+    expect(dispatcher.sse?).to be(true)
+    request = build_request('/events', headers: { 'HTTP_ACCEPT' => 'application/json' })
+
+    dispatcher = Datastar.new(request:, response:, view_context:)
+    expect(dispatcher.sse?).to be(false)
+  end
+
+  describe '#merge_fragments' do
+    it 'produces a streameable response body with D* fragments' do
+      dispatcher.merge_fragments %(<div id="foo">\n<span>hello</span>\n</div>\n)
+      socket = TestSocket.new
+      dispatcher.response.body.call(socket)
+      expect(socket.open).to be(false)
+      expect(socket.lines).to eq(["event: datastar-merge-fragments\ndata: fragments <div id=\"foo\">\ndata: fragments <span>hello</span>\ndata: fragments </div>\n\n\n"])
+    end
+
+    it 'takes D* options' do
+      dispatcher.merge_fragments(
+        %(<div id="foo">\n<span>hello</span>\n</div>\n),
+        id: 72,
+        retry_duration: 2000,
+        settle_duration: 1000
+      )
+      socket = TestSocket.new
+      dispatcher.response.body.call(socket)
+      expect(socket.open).to be(false)
+      expect(socket.lines).to eq([%(event: datastar-merge-fragments\nid: 72\nretry: 2000\ndata: settleDuration 1000\ndata: fragments <div id="foo">\ndata: fragments <span>hello</span>\ndata: fragments </div>\n\n\n)])
+    end
+
+    it 'omits retry if using default value' do
+      dispatcher.merge_fragments(
+        %(<div id="foo">\n<span>hello</span>\n</div>\n),
+        id: 72,
+        retry_duration: 1000,
+        settle_duration: 1000
+      )
+      socket = TestSocket.new
+      dispatcher.response.body.call(socket)
+      expect(socket.open).to be(false)
+      expect(socket.lines).to eq([%(event: datastar-merge-fragments\nid: 72\ndata: settleDuration 1000\ndata: fragments <div id="foo">\ndata: fragments <span>hello</span>\ndata: fragments </div>\n\n\n)])
+    end
+
+    it 'works with #call(view_context:) interfaces' do
+      template_class = Class.new do
+        def self.call(view_context:) = %(<div id="foo">\n<span>#{view_context}</span>\n</div>\n)
+      end
+
+      dispatcher.merge_fragments(
+        template_class,
+        id: 72,
+        retry_duration: 2000,
+        settle_duration: 1000
+      )
+      socket = TestSocket.new
+      dispatcher.response.body.call(socket)
+      expect(socket.lines).to eq([%(event: datastar-merge-fragments\nid: 72\nretry: 2000\ndata: settleDuration 1000\ndata: fragments <div id="foo">\ndata: fragments <span>#{view_context}</span>\ndata: fragments </div>\n\n\n)])
+    end
+  end
+
+  describe '#remove_fragments' do
+    it 'produces D* remove fragments' do
+      dispatcher.remove_fragments('#list-item-1')
+      socket = TestSocket.new
+      dispatcher.response.body.call(socket)
+      expect(socket.open).to be(false)
+      expect(socket.lines).to eq([%(event: datastar-remove-fragments\ndata: selector #list-item-1\n\n\n)])
+    end
+
+    it 'takes D* options' do
+      dispatcher.remove_fragments('#list-item-1', id: 72, settle_duration: 1000)
+      socket = TestSocket.new
+      dispatcher.response.body.call(socket)
+      expect(socket.open).to be(false)
+      expect(socket.lines).to eq([%(event: datastar-remove-fragments\nid: 72\ndata: settleDuration 1000\ndata: selector #list-item-1\n\n\n)])
+    end
+  end
+
+  describe '#merge_signals' do
+    it 'produces a streameable response body with D* signals' do
+      dispatcher.merge_signals %({ "foo": "bar" })
+      socket = TestSocket.new
+      dispatcher.response.body.call(socket)
+      expect(socket.open).to be(false)
+      expect(socket.lines).to eq([%(event: datastar-merge-signals\ndata: signals { "foo": "bar" }\n\n\n)])
+    end
+
+    it 'takes a Hash of signals' do
+      dispatcher.merge_signals(foo: 'bar')
+      socket = TestSocket.new
+      dispatcher.response.body.call(socket)
+      expect(socket.open).to be(false)
+      expect(socket.lines).to eq([%(event: datastar-merge-signals\ndata: signals {"foo":"bar"}\n\n\n)])
+    end
+
+    it 'takes D* options' do
+      dispatcher.merge_signals({foo: 'bar'}, event_id: 72, retry_duration: 2000, only_if_missing: true)
+      socket = TestSocket.new
+      dispatcher.response.body.call(socket)
+      expect(socket.open).to be(false)
+      expect(socket.lines).to eq([%(event: datastar-merge-signals\nid: 72\nretry: 2000\ndata: onlyIfMissing true\ndata: signals {"foo":"bar"}\n\n\n)])
+    end
+  end
+
+  describe '#remove_signals' do
+    it 'produces a streameable response body with D* remove-signals' do
+      dispatcher.remove_signals ['user.name', 'user.email']
+      socket = TestSocket.new
+      dispatcher.response.body.call(socket)
+      expect(socket.open).to be(false)
+      expect(socket.lines).to eq([%(event: datastar-remove-signals\ndata: paths user.name\ndata: paths user.email\n\n\n)])
+    end
+
+    it 'takes D* options' do
+      dispatcher.remove_signals 'user.name', event_id: 72, retry_duration: 2000
+      socket = TestSocket.new
+      dispatcher.response.body.call(socket)
+      expect(socket.open).to be(false)
+      expect(socket.lines).to eq([%(event: datastar-remove-signals\nid: 72\nretry: 2000\ndata: paths user.name\n\n\n)])
+    end
+  end
+
+  describe '#execute_script' do
+    it 'produces a streameable response body with D* execute-script' do
+      dispatcher.execute_script %(alert('hello'))
+      socket = TestSocket.new
+      dispatcher.response.body.call(socket)
+      expect(socket.open).to be(false)
+      expect(socket.lines).to eq([%(event: datastar-execute-script\ndata: script alert('hello')\n\n\n)])
+    end
+
+    it 'splits multi-line script into multiple data lines' do
+      dispatcher.execute_script %(alert('hello');\nalert('world'))
+      socket = TestSocket.new
+      dispatcher.response.body.call(socket)
+      expect(socket.open).to be(false)
+      expect(socket.lines).to eq([%(event: datastar-execute-script\ndata: script alert('hello');\ndata: script alert('world')\n\n\n)])
+    end
+
+    it 'takes D* options' do
+      dispatcher.execute_script %(alert('hello')), event_id: 72, auto_remove: !Datastar::Consts::DEFAULT_EXECUTE_SCRIPT_AUTO_REMOVE
+      socket = TestSocket.new
+      dispatcher.response.body.call(socket)
+      expect(socket.open).to be(false)
+      expect(socket.lines).to eq([%(event: datastar-execute-script\nid: 72\ndata: autoRemove false\ndata: script alert('hello')\n\n\n)])
+    end
+
+    it 'omits autoRemove true' do
+      dispatcher.execute_script %(alert('hello')), event_id: 72, auto_remove: Datastar::Consts::DEFAULT_EXECUTE_SCRIPT_AUTO_REMOVE
+      socket = TestSocket.new
+      dispatcher.response.body.call(socket)
+      expect(socket.open).to be(false)
+      expect(socket.lines).to eq([%(event: datastar-execute-script\nid: 72\ndata: script alert('hello')\n\n\n)])
+    end
+
+    it 'takes attributes Hash' do
+      dispatcher.execute_script %(alert('hello')), attributes: { type: 'text/javascript', title: 'alert' }
+      socket = TestSocket.new
+      dispatcher.response.body.call(socket)
+      expect(socket.open).to be(false)
+      expect(socket.lines).to eq([%(event: datastar-execute-script\ndata: attributes type text/javascript\ndata: attributes title alert\ndata: script alert('hello')\n\n\n)])
+    end
+
+    it 'takes attributes Hash' do
+      dispatcher.execute_script %(alert('hello')), attributes: { type: 'module', title: 'alert' }
+      socket = TestSocket.new
+      dispatcher.response.body.call(socket)
+      expect(socket.open).to be(false)
+      expect(socket.lines).to eq([%(event: datastar-execute-script\ndata: attributes title alert\ndata: script alert('hello')\n\n\n)])
+    end
+  end
+
+  describe '#redirect' do
+    it 'sends an execute_script event with a window.location change' do
+      dispatcher.redirect '/guide'
+      socket = TestSocket.new
+      dispatcher.response.body.call(socket)
+      expect(socket.open).to be(false)
+      expect(socket.lines).to eq([%(event: datastar-execute-script\ndata: script setTimeout(() => { window.location = '/guide' })\n\n\n)])
+    end
+  end
+
+  describe '#signals' do
+    context 'with POST request' do
+      specify 'Rails parsed parameters' do
+        request = build_request(
+          '/events', 
+          method: 'POST', 
+          headers: { 
+            'action_dispatch.request.request_parameters' => { 'event' => { 'foo' => 'bar' } }
+          }
+        )
+
+        dispatcher = Datastar.new(request:, response:)
+        expect(dispatcher.signals).to eq({ 'foo' => 'bar' })
+      end
+
+      specify 'no signals in Rails parameters' do
+        request = build_request(
+          '/events', 
+          method: 'POST', 
+          headers: { 
+            'action_dispatch.request.request_parameters' => {}
+          }
+        )
+
+        dispatcher = Datastar.new(request:, response:)
+        expect(dispatcher.signals).to eq({})
+      end
+
+      specify 'JSON request with signals in body' do
+        request = build_request(
+          '/events', 
+          method: 'POST', 
+          content_type: 'application/json',
+          body: %({ "foo": "bar" })
+        )
+
+        dispatcher = Datastar.new(request:, response:)
+        expect(dispatcher.signals).to eq({ 'foo' => 'bar' })
+      end
+
+      specify 'multipart form request' do
+        request = build_request(
+          '/events', 
+          method: 'POST', 
+          content_type: 'multipart/form-data',
+          body: 'user[name]=joe&user[email]=joe@email.com'
+        )
+
+        dispatcher = Datastar.new(request:, response:)
+        expect(dispatcher.signals).to eq('user' => { 'name' => 'joe', 'email' => 'joe@email.com' })
+      end
+    end
+
+    context 'with GET request' do
+      specify 'with signals in ?datastar=[JSON signals]' do
+        query = %({"foo":"bar"})
+        request = build_request(
+          %(/events?datastar=#{URI.encode_uri_component(query)}), 
+          method: 'GET', 
+        )
+
+        dispatcher = Datastar.new(request:, response:)
+        expect(dispatcher.signals).to eq('foo' => 'bar')
+      end
+
+      specify 'with no signals' do
+        request = build_request(
+          %(/events), 
+          method: 'GET', 
+        )
+
+        dispatcher = Datastar.new(request:, response:)
+        expect(dispatcher.signals).to eq({})
+      end
+    end
+  end
+
+  describe '#stream' do
+    it 'writes multiple events to socket' do
+      dispatcher.stream do |sse|
+        sse.merge_fragments %(<div id="foo">\n<span>hello</span>\n</div>\n)
+        sse.merge_signals(foo: 'bar')
+      end
+
+      socket = TestSocket.new
+      dispatcher.response.body.call(socket)
+      expect(socket.open).to be(false)
+      expect(socket.lines.size).to eq(2)
+      expect(socket.lines[0]).to eq("event: datastar-merge-fragments\ndata: fragments <div id=\"foo\">\ndata: fragments <span>hello</span>\ndata: fragments </div>\n\n\n")
+      expect(socket.lines[1]).to eq("event: datastar-merge-signals\ndata: signals {\"foo\":\"bar\"}\n\n\n")
+    end
+
+    it 'returns a Rack array response' do
+      status, headers, body = dispatcher.stream do |sse|
+        sse.merge_signals(foo: 'bar')
+      end
+      expect(status).to eq(200)
+      expect(headers['content-type']).to eq('text/event-stream')
+      expect(headers['cache-control']).to eq('no-cache')
+      expect(headers['connection']).to eq('keep-alive')
+    end
+
+    context 'with multiple streams' do
+      let(:executor) { Datastar.config.executor }
+
+      describe 'default thread-based executor' do
+        it_behaves_like 'a dispatcher handling concurrent streams'
+      end
+
+      describe 'Async-based executor' do
+        around do |example|
+          Sync do
+            example.run
+          end
+        end
+
+        let(:executor) { Datastar::AsyncExecutor.new }
+        it_behaves_like 'a dispatcher handling concurrent streams'
+      end
+    end
+
+    specify '#signals' do
+      request = build_request(
+        %(/events), 
+        method: 'POST', 
+        content_type: 'multipart/form-data',
+        body: 'user[name]=joe&user[email]=joe@email.com'
+      )
+
+      dispatcher = Datastar.new(request:, response:)
+      signals = nil
+
+      dispatcher.stream do |sse|
+        signals = sse.signals
+      end
+      socket = TestSocket.new
+      dispatcher.response.body.call(socket)
+
+      expect(signals['user']['name']).to eq('joe')
+    end
+
+    specify '#on_connect' do
+      connected = false
+      dispatcher.on_connect { |conn| connected = true }
+      dispatcher.stream do |sse|
+        sse.merge_signals(foo: 'bar')
+      end
+      socket = TestSocket.new
+      # allow(socket).to receive(:<<).and_raise(Errno::EPIPE, 'Socket closed')
+      #
+      dispatcher.response.body.call(socket)
+      expect(connected).to be(true)
+    end
+
+    specify '#on_client_disconnect' do
+      events = []
+      dispatcher
+        .on_connect { |conn| events << true }
+        .on_client_disconnect { |conn| events << false }
+
+      dispatcher.stream do |sse|
+        sse.merge_signals(foo: 'bar')
+      end
+      socket = TestSocket.new
+      allow(socket).to receive(:<<).and_raise(Errno::EPIPE, 'Socket closed')
+      
+      dispatcher.response.body.call(socket)
+      expect(events).to eq([true, false])
+    end
+
+    specify '#on_server_disconnect' do
+      events = []
+      dispatcher
+        .on_connect { |conn| events << true }
+        .on_server_disconnect { |conn| events << false }
+
+      dispatcher.stream do |sse|
+        sse.merge_signals(foo: 'bar')
+      end
+      socket = TestSocket.new
+      
+      dispatcher.response.body.call(socket)
+      expect(events).to eq([true, false])
+    end
+
+    specify '#on_error' do
+      errors = []
+      dispatcher.on_error { |ex| errors << ex }
+
+      dispatcher.stream do |sse|
+        sse.merge_signals(foo: 'bar')
+      end
+      socket = TestSocket.new
+      allow(socket).to receive(:<<).and_raise(ArgumentError, 'Invalid argument')
+      
+      dispatcher.response.body.call(socket)
+      expect(errors.first).to be_a(ArgumentError)
+    end
+
+    specify 'with global on_error' do
+      errs = []
+      Datastar.config.on_error { |ex| errs << ex }
+      socket = TestSocket.new
+      allow(socket).to receive(:<<).and_raise(ArgumentError, 'Invalid argument')
+      
+      dispatcher.stream do |sse|
+        sse.merge_signals(foo: 'bar')
+      end
+      dispatcher.response.body.call(socket)
+      expect(errs.first).to be_a(ArgumentError)
+    end
+  end
+
+  private
+
+  def build_request(path, method: 'GET', body: nil, content_type: 'application/json', accept: 'text/event-stream', headers: {})
+    headers = { 
+      'HTTP_ACCEPT' => accept, 
+      'CONTENT_TYPE' => content_type,
+      'REQUEST_METHOD' => method,
+      Rack::RACK_INPUT => body ? StringIO.new(body) : nil
+    }.merge(headers)
+
+    Rack::Request.new(Rack::MockRequest.env_for(path, headers))
+  end
+end
diff --git a/sdk/ruby/spec/spec_helper.rb b/sdk/ruby/spec/spec_helper.rb
new file mode 100644
index 000000000..e6d18e0f5
--- /dev/null
+++ b/sdk/ruby/spec/spec_helper.rb
@@ -0,0 +1,19 @@
+# frozen_string_literal: true
+
+require 'datastar'
+require 'rack'
+require 'datastar/async_executor'
+require 'debug'
+require_relative './support/dispatcher_examples'
+
+RSpec.configure do |config|
+  # Enable flags like --only-failures and --next-failure
+  config.example_status_persistence_file_path = '.rspec_status'
+
+  # Disable RSpec exposing methods globally on `Module` and `main`
+  config.disable_monkey_patching!
+
+  config.expect_with :rspec do |c|
+    c.syntax = :expect
+  end
+end
diff --git a/sdk/ruby/spec/support/dispatcher_examples.rb b/sdk/ruby/spec/support/dispatcher_examples.rb
new file mode 100644
index 000000000..8b71ec2ff
--- /dev/null
+++ b/sdk/ruby/spec/support/dispatcher_examples.rb
@@ -0,0 +1,53 @@
+module DispatcherExamples
+  RSpec.shared_examples 'a dispatcher handling concurrent streams' do
+    it 'spawns multiple streams in threads, triggering callbacks only once' do
+      disconnects = []
+
+      dispatcher = Datastar
+                    .new(request:, response:, executor:)
+                    .on_server_disconnect { |_| disconnects << true }
+        .on_error { |err| puts err.backtrace.join("\n") }
+
+      dispatcher.stream do |sse|
+        sleep 0.01
+        sse.merge_fragments %(<div id="foo">\n<span>hello</span>\n</div>\n)
+      end
+
+      dispatcher.stream do |sse|
+        sse.merge_signals(foo: 'bar')
+      end
+
+      socket = TestSocket.new
+      dispatcher.response.body.call(socket)
+      expect(socket.open).to be(false)
+      expect(socket.lines.size).to eq(2)
+      expect(socket.lines[0]).to eq("event: datastar-merge-signals\ndata: signals {\"foo\":\"bar\"}\n\n\n")
+      expect(socket.lines[1]).to eq("event: datastar-merge-fragments\ndata: fragments <div id=\"foo\">\ndata: fragments <span>hello</span>\ndata: fragments </div>\n\n\n")
+      expect(disconnects).to eq([true])
+    end
+
+    it 'catches exceptions raised from threads' do
+      Thread.report_on_exception = false
+      errs = []
+
+      dispatcher = Datastar
+                    .new(request:, response:, executor:)
+                    .on_error { |err| errs << err }
+
+      dispatcher.stream do |sse|
+        sleep 0.01
+        raise ArgumentError, 'Invalid argument'
+      end
+
+      dispatcher.stream do |sse|
+        sse.merge_signals(foo: 'bar')
+      end
+
+      socket = TestSocket.new
+      dispatcher.response.body.call(socket)
+      expect(errs.first).to be_a(ArgumentError)
+      Thread.report_on_exception = true
+    end
+  end
+end
+
diff --git a/site/static/code_snippets/getting_started/multiple_events.rubysnippet b/site/static/code_snippets/getting_started/multiple_events.rubysnippet
new file mode 100644
index 000000000..12dbaea5b
--- /dev/null
+++ b/site/static/code_snippets/getting_started/multiple_events.rubysnippet
@@ -0,0 +1,6 @@
+datastar.stream do |sse|
+  sse.merge_fragments('<div id="question">...</div>')
+  sse.merge_fragments('<div id="instructions">...</div>')
+  sse.merge_signals(answer: '...')
+  sse.merge_signals(prize: '...')
+end
diff --git a/site/static/code_snippets/getting_started/setup.rubysnippet b/site/static/code_snippets/getting_started/setup.rubysnippet
new file mode 100644
index 000000000..651108778
--- /dev/null
+++ b/site/static/code_snippets/getting_started/setup.rubysnippet
@@ -0,0 +1,17 @@
+require 'datastar'
+
+# Create a Datastar::Dispatcher instance
+
+datastar = Datastar.new(request:, response:)
+
+# In a Rack handler, you can instantiate from the Rack env
+# datastar = Datastar.from_rack_env(env)
+
+# Start a streaming response
+datastar.stream do |sse|
+  # Merges fragment into the DOM
+  sse.merge_fragments %(<div id="question">What do you put in a toaster?</div>)
+
+  # Merges signals
+  sse.merge_signals(response: '', answer: 'bread')
+end
diff --git a/site/static/code_snippets/going_deeper/multiple_events.rubysnippet b/site/static/code_snippets/going_deeper/multiple_events.rubysnippet
new file mode 100644
index 000000000..f574b1eed
--- /dev/null
+++ b/site/static/code_snippets/going_deeper/multiple_events.rubysnippet
@@ -0,0 +1,11 @@
+require 'datastar'
+
+# Create a Datastar::Dispatcher instance
+
+datastar = Datastar.new(request:, response:)
+
+datastar.stream do |sse|
+  sse.merge_fragments('<div id="hello">Hello, world!</div>')
+  sse.merge_signals(foo: { bar: 1 })
+  sse.execute_script('console.log("Success!")')
+end
diff --git a/site/static/code_snippets/how_tos/polling_1.rubysnippet b/site/static/code_snippets/how_tos/polling_1.rubysnippet
new file mode 100644
index 000000000..0320f12c7
--- /dev/null
+++ b/site/static/code_snippets/how_tos/polling_1.rubysnippet
@@ -0,0 +1,11 @@
+datastar = Datastar.new(request:, response:)
+
+current_time = Time.now.strftime('%Y-%m-%d %H:%M:%S')
+
+datastar.merge_fragments <<~FRAGMENT
+    <div id="time"
+         data-on-interval__duration.5s="@get('/endpoint')"
+    >
+        #{current_time}
+    </div>
+FRAGMENT
diff --git a/site/static/code_snippets/how_tos/polling_2.rubysnippet b/site/static/code_snippets/how_tos/polling_2.rubysnippet
new file mode 100644
index 000000000..d0e1d079c
--- /dev/null
+++ b/site/static/code_snippets/how_tos/polling_2.rubysnippet
@@ -0,0 +1,14 @@
+datastar = Datastar.new(request:, response:)
+
+now = Time.now
+current_time = now.strftime('%Y-%m-%d %H:%M:%S')
+current_seconds = now.strftime('%S').to_i
+duration = current_seconds < 50 ? 5 : 1
+
+datastar.merge_fragments <<~FRAGMENT
+    <div id="time"
+         data-on-interval__duration.#{duration}s="@get('/endpoint')"
+    >
+        #{current_time}
+    </div>
+FRAGMENT
diff --git a/site/static/code_snippets/how_tos/redirect_1.rubysnippet b/site/static/code_snippets/how_tos/redirect_1.rubysnippet
new file mode 100644
index 000000000..3cd283ca8
--- /dev/null
+++ b/site/static/code_snippets/how_tos/redirect_1.rubysnippet
@@ -0,0 +1,7 @@
+datastar = Datastar.new(request:, response:)
+
+datastar.stream do |sse|
+  sse.merge_fragments '<div id="indicator">Redirecting in 3 seconds...</div>'
+  sleep 3
+  sse.execute_script 'window.location = "/guide"'
+end
diff --git a/site/static/code_snippets/how_tos/redirect_2.rubysnippet b/site/static/code_snippets/how_tos/redirect_2.rubysnippet
new file mode 100644
index 000000000..3c23ea28f
--- /dev/null
+++ b/site/static/code_snippets/how_tos/redirect_2.rubysnippet
@@ -0,0 +1,13 @@
+datastar = Datastar.new(request:, response:)
+
+datastar.stream do |sse|
+  sse.merge_fragments '<div id="indicator">Redirecting in 3 seconds...</div>'
+
+  sleep 3
+
+  sse.execute_script <<~JS
+    setTimeout(() => {
+      window.location = '/guide'
+    })
+  JS
+end
diff --git a/site/static/code_snippets/how_tos/redirect_3.rubysnippet b/site/static/code_snippets/how_tos/redirect_3.rubysnippet
new file mode 100644
index 000000000..bdf514ae3
--- /dev/null
+++ b/site/static/code_snippets/how_tos/redirect_3.rubysnippet
@@ -0,0 +1,9 @@
+datastar = Datastar.new(request:, response:)
+
+datastar.stream do |sse|
+  sse.merge_fragments '<div id="indicator">Redirecting in 3 seconds...</div>'
+
+  sleep 3
+
+  sse.redirect '/guide'
+end
diff --git a/site/static/md/reference/sdks.md b/site/static/md/reference/sdks.md
index 12be01205..3dd63d559 100644
--- a/site/static/md/reference/sdks.md
+++ b/site/static/md/reference/sdks.md
@@ -51,6 +51,11 @@ _Author: [Felix Ingram](https://github.com/lllama)_
 Rust [SDK](https://github.com/starfederation/datastar/tree/main/sdk/rust) and [examples](https://github.com/starfederation/datastar/tree/main/examples/rust).  
  _Author: [Johnathan Stevers](https://github.com/jmstevers)_
 
+## Ruby
+
+Ruby [SDK](https://github.com/starfederation/datastar/tree/main/sdk/ruby) and [examples](https://github.com/starfederation/datastar/tree/main/examples/ruby).  
+ _Author: [Ismael Celis](https://github.com/ismasan)_
+
 ## TypeScript
 
 TypeScript [SDK](https://github.com/starfederation/datastar/tree/main/sdk/typescript) and [examples](https://github.com/starfederation/datastar/tree/main/examples/typescript), including support for NodeJS and Web standard runtimes (Deno, Bun, etc.).