# @aws-sdk/client-sts ## Description AWS SDK for JavaScript STS Client for Node.js, Browser and React Native. Security Token Service

Security Token Service (STS) enables you to request temporary, limited-privilege credentials for users. This guide provides descriptions of the STS API. For more information about using this service, see Temporary Security Credentials.

## Installing To install the this package, simply type add or install @aws-sdk/client-sts using your favorite package manager: - `npm install @aws-sdk/client-sts` - `yarn add @aws-sdk/client-sts` - `pnpm add @aws-sdk/client-sts` ## Getting Started ### Import The AWS SDK is modulized by clients and commands. To send a request, you only need to import the `STSClient` and the commands you need, for example `AssumeRoleCommand`: ```js // ES5 example const { STSClient, AssumeRoleCommand } = require("@aws-sdk/client-sts"); ``` ```ts // ES6+ example import { STSClient, AssumeRoleCommand } from "@aws-sdk/client-sts"; ``` ### Usage To send a request, you: - Initiate client with configuration (e.g. credentials, region). - Initiate command with input parameters. - Call `send` operation on client with command object as input. - If you are using a custom http handler, you may call `destroy()` to close open connections. ```js // a client can be shared by different commands. const client = new STSClient({ region: "REGION" }); const params = { /** input parameters */ }; const command = new AssumeRoleCommand(params); ``` #### Async/await We recommend using [await](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/await) operator to wait for the promise returned by send operation as follows: ```js // async/await. try { const data = await client.send(command); // process data. } catch (error) { // error handling. } finally { // finally. } ``` Async-await is clean, concise, intuitive, easy to debug and has better error handling as compared to using Promise chains or callbacks. #### Promises You can also use [Promise chaining](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Using_promises#chaining) to execute send operation. ```js client.send(command).then( (data) => { // process data. }, (error) => { // error handling. } ); ``` Promises can also be called using `.catch()` and `.finally()` as follows: ```js client .send(command) .then((data) => { // process data. }) .catch((error) => { // error handling. }) .finally(() => { // finally. }); ``` #### Callbacks We do not recommend using callbacks because of [callback hell](http://callbackhell.com/), but they are supported by the send operation. ```js // callbacks. client.send(command, (err, data) => { // process err and data. }); ``` #### v2 compatible style The client can also send requests using v2 compatible style. However, it results in a bigger bundle size and may be dropped in next major version. More details in the blog post on [modular packages in AWS SDK for JavaScript](https://aws.amazon.com/blogs/developer/modular-packages-in-aws-sdk-for-javascript/) ```ts import * as AWS from "@aws-sdk/client-sts"; const client = new AWS.STS({ region: "REGION" }); // async/await. try { const data = await client.assumeRole(params); // process data. } catch (error) { // error handling. } // Promises. client .assumeRole(params) .then((data) => { // process data. }) .catch((error) => { // error handling. }); // callbacks. client.assumeRole(params, (err, data) => { // process err and data. }); ``` ### Troubleshooting When the service returns an exception, the error will include the exception information, as well as response metadata (e.g. request id). ```js try { const data = await client.send(command); // process data. } catch (error) { const { requestId, cfId, extendedRequestId } = error.$$metadata; console.log({ requestId, cfId, extendedRequestId }); /** * The keys within exceptions are also parsed. * You can access them by specifying exception names: * if (error.name === 'SomeServiceException') { * const value = error.specialKeyInException; * } */ } ``` ## Getting Help Please use these community resources for getting help. We use the GitHub issues for tracking bugs and feature requests, but have limited bandwidth to address them. - Visit [Developer Guide](https://docs.aws.amazon.com/sdk-for-javascript/v3/developer-guide/welcome.html) or [API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/index.html). - Check out the blog posts tagged with [`aws-sdk-js`](https://aws.amazon.com/blogs/developer/tag/aws-sdk-js/) on AWS Developer Blog. - Ask a question on [StackOverflow](https://stackoverflow.com/questions/tagged/aws-sdk-js) and tag it with `aws-sdk-js`. - Join the AWS JavaScript community on [gitter](https://gitter.im/aws/aws-sdk-js-v3). - If it turns out that you may have found a bug, please [open an issue](https://github.com/aws/aws-sdk-js-v3/issues/new/choose). To test your universal JavaScript code in Node.js, browser and react-native environments, visit our [code samples repo](https://github.com/aws-samples/aws-sdk-js-tests). ## Contributing This client code is generated automatically. Any modifications will be overwritten the next time the `@aws-sdk/client-sts` package is updated. To contribute to client you can check our [generate clients scripts](https://github.com/aws/aws-sdk-js-v3/tree/main/scripts/generate-clients). ## License This SDK is distributed under the [Apache License, Version 2.0](http://www.apache.org/licenses/LICENSE-2.0), see LICENSE for more information. ## Client Commands (Operations List)

AssumeRole

[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/clients/client-sts/classes/assumerolecommand.html) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/clients/client-sts/interfaces/assumerolecommandinput.html) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/clients/client-sts/interfaces/assumerolecommandoutput.html)

AssumeRoleWithSAML

[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/clients/client-sts/classes/assumerolewithsamlcommand.html) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/clients/client-sts/interfaces/assumerolewithsamlcommandinput.html) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/clients/client-sts/interfaces/assumerolewithsamlcommandoutput.html)

AssumeRoleWithWebIdentity

[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/clients/client-sts/classes/assumerolewithwebidentitycommand.html) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/clients/client-sts/interfaces/assumerolewithwebidentitycommandinput.html) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/clients/client-sts/interfaces/assumerolewithwebidentitycommandoutput.html)

DecodeAuthorizationMessage

[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/clients/client-sts/classes/decodeauthorizationmessagecommand.html) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/clients/client-sts/interfaces/decodeauthorizationmessagecommandinput.html) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/clients/client-sts/interfaces/decodeauthorizationmessagecommandoutput.html)

GetAccessKeyInfo

[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/clients/client-sts/classes/getaccesskeyinfocommand.html) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/clients/client-sts/interfaces/getaccesskeyinfocommandinput.html) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/clients/client-sts/interfaces/getaccesskeyinfocommandoutput.html)

GetCallerIdentity

[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/clients/client-sts/classes/getcalleridentitycommand.html) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/clients/client-sts/interfaces/getcalleridentitycommandinput.html) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/clients/client-sts/interfaces/getcalleridentitycommandoutput.html)

GetFederationToken

[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/clients/client-sts/classes/getfederationtokencommand.html) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/clients/client-sts/interfaces/getfederationtokencommandinput.html) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/clients/client-sts/interfaces/getfederationtokencommandoutput.html)

GetSessionToken

[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/clients/client-sts/classes/getsessiontokencommand.html) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/clients/client-sts/interfaces/getsessiontokencommandinput.html) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/clients/client-sts/interfaces/getsessiontokencommandoutput.html)

c	File Name	Size	files	T	Date
zip	dist-cjs/	92157	25	---	2025-10-15 10:09:14
zip	dist-es/	79710	25	---	2025-10-15 10:09:14
zip	dist-types/	246083	50	---	2025-10-15 10:09:14
zip	node_modules/	2492	1	---	2025-10-15 10:18:18
-	LICENSE	11390		%	2025-10-15 10:07:48
-	README.md	9621		md	2025-10-15 10:07:48
-	package.json	3575		json	2025-10-15 10:07:48

🌲 / linkwarden node_modules @aws-sdk client-sts

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