diff --git a/README.md b/README.md
index ceaedaf..b7a9f7d 100644
--- a/README.md
+++ b/README.md
@@ -57,6 +57,8 @@ Files generated are ready to be hosted as static website content in this structu
 
 ## Quick start
 
+### In Node.js environment
+
 You can have it installed globally like this:
 
 ```sh-session
@@ -74,6 +76,23 @@ $ npx apig-swagger-ui ...
 
 By passing `-h` or `--help` to the command line, you can see all supported arguments and options.
 
+It can also be used in your own code, like this:
+
+```javascript
+import ApigSwaggerUi from 'apig-swagger-ui';
+
+class Generator extends ApigSwaggerUi {
+  argv: string[] = ['api-doc/prod', '-r', 'ap-southeast-2'];
+}
+await Generator.run();
+```
+
+### Install pre-built binary
+
+*apig-swagger-ui* can be installed through Homebrew (brew install handy-common-utils/tap/apig-swagger-ui for Linux or MacOS),
+snap (snap install apig-swagger-ui for Linux except WSL),
+or manual download (https://github.com/james-hu/apig-swagger-ui/releases for Windows, Linux, and MacOS ).
+
 ## Manual
 
 <!-- help start -->
diff --git a/src/context.ts b/src/context.ts
index a5f41ee..8ff2a7c 100644
--- a/src/context.ts
+++ b/src/context.ts
@@ -1,8 +1,10 @@
 // eslint-disable-next-line unicorn/import-style, unicorn/prefer-node-protocol
 import * as path from 'path';
 import ApigSwaggerUi = require('.');
+import type { CredentialsOptions } from 'aws-sdk/lib/credentials';
 
 export class Context {
+    awsCredentialsOption?: CredentialsOptions;
     swaggerUiFolder: string;
     swaggerUiIndexFile: string;
     swaggerUiInitializerJsFile: string;
@@ -18,6 +20,16 @@ export class Context {
       this.swaggerUiInitializerJsFile = path.join(this.swaggerUiFolder, 'swagger-initializer.js');
       this.apiFolder = path.join(this.options.args.path, this.basePathApi);
       this.homePageFile = path.join(this.options.args.path, this.pathHomePage);
+
+      const accessKeyId = this.options.flags.key;
+      const secretAccessKey = this.options.flags.secret;
+      const sessionToken = this.options.flags.token;
+
+      this.awsCredentialsOption = (accessKeyId && secretAccessKey) ? {
+        accessKeyId,
+        secretAccessKey,
+        sessionToken,
+      } : undefined;
     }
 
     domainFolder(domain: string) {
diff --git a/src/generator.ts b/src/generator.ts
index 96e574d..0d0d49b 100644
--- a/src/generator.ts
+++ b/src/generator.ts
@@ -27,8 +27,9 @@ export class Generator {
   }
 
   async generateForOneRegion(homePage: HomePage, transformer: Transformer, region?: string) {
-    const apig = new APIGateway({ region });
-    const apig2 = new ApiGatewayV2({ region });
+    const awsClientConfig = { region, credentials: this.context.awsCredentialsOption };
+    const apig = new APIGateway(awsClientConfig);
+    const apig2 = new ApiGatewayV2(awsClientConfig);
     // eslint-disable-next-line unicorn/no-await-expression-member
     const domainNameObjects = (await withRetry(() => apig.getDomainNames({ limit: 500 }).promise()))?.items;
     if (domainNameObjects != null) {
diff --git a/src/index.ts b/src/index.ts
index 3d93e2d..b4b9046 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -21,6 +21,9 @@ class ApigSwaggerUi extends Command {
     'update-readme.md': Flags.boolean({ hidden: true, description: 'For developers only, don\'t use' }),
 
     region: Flags.string({ char: 'r', multiple: true, description: 'AWS region' }),
+    key: Flags.string({ char: 'k', description: 'AWS access key ID' }),
+    secret: Flags.string({ char: 'e', description: 'AWS secret access key' }),
+    token: Flags.string({ char: 't', description: 'AWS session token' }),
 
     include: Flags.string({ char: 'i', default: ['*/*', '*/'], multiple: true, description: 'custom domains and base path mappings to include' }),
     exclude: Flags.string({ char: 'x', multiple: true, description: 'custom domains and base path mappings to exclude' }),
diff --git a/src/transformer.ts b/src/transformer.ts
index 8a1884c..4d52832 100644
--- a/src/transformer.ts
+++ b/src/transformer.ts
@@ -1,7 +1,7 @@
 /* eslint-disable unicorn/no-array-for-each */
 import { Context } from './context';
 import { OpenAPIV3, OpenAPIV2 } from 'openapi-types';
-import { APIGateway, ApiGatewayV2 } from 'aws-sdk';
+import type { APIGateway, ApiGatewayV2 } from 'aws-sdk';
 
 export type OpenApiDocument = OpenAPIV3.Document & {
     securityDefinitions?: OpenAPIV2.Document['securityDefinitions'];