- Navigation GuideYou are on a Client landing page. Commands (operations) are listed on this page. The Client constructor type is linked at the bottom.
STSClient
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 .
Installation
npm install @aws-sdk/client-sts
yarn add @aws-sdk/client-sts
pnpm add @aws-sdk/client-sts
STSClient Operations
Command | Summary |
---|
Command | Summary |
---|---|
AssumeRoleCommand | Returns a set of temporary security credentials that you can use to access Amazon Web Services resources. These temporary credentials consist of an access key ID, a secret access key, and a security token. Typically, you use Permissions The temporary security credentials created by (Optional) You can pass inline or managed session policies to this operation. You can pass a single JSON policy document to use as an inline session policy. You can also specify up to 10 managed policy Amazon Resource Names (ARNs) to use as managed session policies. The plaintext that you use for both inline and managed session policies can't exceed 2,048 characters. Passing policies to this operation returns new temporary credentials. The resulting session's permissions are the intersection of the role's identity-based policy and the session policies. You can use the role's temporary credentials in subsequent Amazon Web Services API calls to access resources in the account that owns the role. You cannot use session policies to grant more permissions than those allowed by the identity-based policy of the role that is being assumed. For more information, see Session Policies in the IAM User Guide. When you create a role, you create two policies: a role trust policy that specifies who can assume the role, and a permissions policy that specifies what can be done with the role. You specify the trusted principal that is allowed to assume the role in the role trust policy. To assume a role from a different account, your Amazon Web Services account must be trusted by the role. The trust relationship is defined in the role's trust policy when the role is created. That trust policy states which accounts are allowed to delegate that access to users in the account. A user who wants to access a role in a different account must also have permissions that are delegated from the account administrator. The administrator must attach a policy that allows the user to call To allow a user to assume a role in the same account, you can do either of the following:
You can do either because the role’s trust policy acts as an IAM resource-based policy. When a resource-based policy grants access to a principal in the same account, no additional identity-based policy is required. For more information about trust policies and resource-based policies, see IAM Policies in the IAM User Guide. Tags (Optional) You can pass tag key-value pairs to your session. These tags are called session tags. For more information about session tags, see Passing Session Tags in STS in the IAM User Guide. An administrator must grant you the permissions necessary to pass session tags. The administrator can also create granular permissions to allow you to pass only specific session tags. For more information, see Tutorial: Using Tags for Attribute-Based Access Control in the IAM User Guide. You can set the session tags as transitive. Transitive tags persist during role chaining. For more information, see Chaining Roles with Session Tags in the IAM User Guide. Using MFA with AssumeRole (Optional) You can include multi-factor authentication (MFA) information when you call For more information, see Configuring MFA-Protected API Access in the IAM User Guide guide. To use MFA with |
AssumeRoleWithSAMLCommand | Returns a set of temporary security credentials for users who have been authenticated via a SAML authentication response. This operation provides a mechanism for tying an enterprise identity store or directory to role-based Amazon Web Services access without user-specific credentials or configuration. For a comparison of The temporary security credentials returned by this operation consist of an access key ID, a secret access key, and a security token. Applications can use these temporary security credentials to sign calls to Amazon Web Services services. Session Duration By default, the temporary security credentials created by Role chaining limits your CLI or Amazon Web Services API role session to a maximum of one hour. When you use the Permissions The temporary security credentials created by (Optional) You can pass inline or managed session policies to this operation. You can pass a single JSON policy document to use as an inline session policy. You can also specify up to 10 managed policy Amazon Resource Names (ARNs) to use as managed session policies. The plaintext that you use for both inline and managed session policies can't exceed 2,048 characters. Passing policies to this operation returns new temporary credentials. The resulting session's permissions are the intersection of the role's identity-based policy and the session policies. You can use the role's temporary credentials in subsequent Amazon Web Services API calls to access resources in the account that owns the role. You cannot use session policies to grant more permissions than those allowed by the identity-based policy of the role that is being assumed. For more information, see Session Policies in the IAM User Guide. Calling Calling Tags (Optional) You can configure your IdP to pass attributes into your SAML assertion as session tags. Each session tag consists of a key name and an associated value. For more information about session tags, see Passing Session Tags in STS in the IAM User Guide. You can pass up to 50 session tags. The plaintext session tag keys can’t exceed 128 characters and the values can’t exceed 256 characters. For these and additional limits, see IAM and STS Character Limits in the IAM User Guide. An Amazon Web Services conversion compresses the passed inline session policy, managed policy ARNs, and session tags into a packed binary format that has a separate limit. Your request can fail for this limit even if your plaintext meets the other requirements. The You can pass a session tag with the same key as a tag that is attached to the role. When you do, session tags override the role's tags with the same key. An administrator must grant you the permissions necessary to pass session tags. The administrator can also create granular permissions to allow you to pass only specific session tags. For more information, see Tutorial: Using Tags for Attribute-Based Access Control in the IAM User Guide. You can set the session tags as transitive. Transitive tags persist during role chaining. For more information, see Chaining Roles with Session Tags in the IAM User Guide. SAML Configuration Before your application can call For more information, see the following resources:
|
AssumeRoleWithWebIdentityCommand | Returns a set of temporary security credentials for users who have been authenticated in a mobile or web application with a web identity provider. Example providers include the OAuth 2.0 providers Login with Amazon and Facebook, or any OpenID Connect-compatible identity provider such as Google or Amazon Cognito federated identities . For mobile applications, we recommend that you use Amazon Cognito. You can use Amazon Cognito with the Amazon Web Services SDK for iOS Developer Guide and the Amazon Web Services SDK for Android Developer Guide to uniquely identify a user. You can also supply the user with a consistent identity throughout the lifetime of an application. To learn more about Amazon Cognito, see Amazon Cognito identity pools in Amazon Cognito Developer Guide. Calling The temporary security credentials returned by this API consist of an access key ID, a secret access key, and a security token. Applications can use these temporary security credentials to sign calls to Amazon Web Services service API operations. Session Duration By default, the temporary security credentials created by Permissions The temporary security credentials created by (Optional) You can pass inline or managed session policies to this operation. You can pass a single JSON policy document to use as an inline session policy. You can also specify up to 10 managed policy Amazon Resource Names (ARNs) to use as managed session policies. The plaintext that you use for both inline and managed session policies can't exceed 2,048 characters. Passing policies to this operation returns new temporary credentials. The resulting session's permissions are the intersection of the role's identity-based policy and the session policies. You can use the role's temporary credentials in subsequent Amazon Web Services API calls to access resources in the account that owns the role. You cannot use session policies to grant more permissions than those allowed by the identity-based policy of the role that is being assumed. For more information, see Session Policies in the IAM User Guide. Tags (Optional) You can configure your IdP to pass attributes into your web identity token as session tags. Each session tag consists of a key name and an associated value. For more information about session tags, see Passing Session Tags in STS in the IAM User Guide. You can pass up to 50 session tags. The plaintext session tag keys can’t exceed 128 characters and the values can’t exceed 256 characters. For these and additional limits, see IAM and STS Character Limits in the IAM User Guide. An Amazon Web Services conversion compresses the passed inline session policy, managed policy ARNs, and session tags into a packed binary format that has a separate limit. Your request can fail for this limit even if your plaintext meets the other requirements. The You can pass a session tag with the same key as a tag that is attached to the role. When you do, the session tag overrides the role tag with the same key. An administrator must grant you the permissions necessary to pass session tags. The administrator can also create granular permissions to allow you to pass only specific session tags. For more information, see Tutorial: Using Tags for Attribute-Based Access Control in the IAM User Guide. You can set the session tags as transitive. Transitive tags persist during role chaining. For more information, see Chaining Roles with Session Tags in the IAM User Guide. Identities Before your application can call Calling For more information about how to use OIDC federation and the
|
AssumeRootCommand | Returns a set of short term credentials you can use to perform privileged tasks on a member account in your organization. Before you can launch a privileged session, you must have centralized root access in your organization. For steps to enable this feature, see Centralize root access for member accounts in the IAM User Guide. The STS global endpoint is not supported for AssumeRoot. You must send this request to a Regional STS endpoint. For more information, see Endpoints . You can track AssumeRoot in CloudTrail logs to determine what actions were performed in a session. For more information, see Track privileged tasks in CloudTrail in the IAM User Guide. |
DecodeAuthorizationMessageCommand | Decodes additional information about the authorization status of a request from an encoded message returned in response to an Amazon Web Services request. For example, if a user is not authorized to perform an operation that he or she has requested, the request returns a Only certain Amazon Web Services operations return an encoded authorization message. The documentation for an individual operation indicates whether that operation returns an encoded message in addition to returning an HTTP code. The message is encoded because the details of the authorization status can contain privileged information that the user who requested the operation should not see. To decode an authorization status message, a user must be granted permissions through an IAM policy to request the The decoded message includes the following type of information:
|
GetAccessKeyInfoCommand | Returns the account identifier for the specified access key ID. Access keys consist of two parts: an access key ID (for example, When you pass an access key ID to this operation, it returns the ID of the Amazon Web Services account to which the keys belong. Access key IDs beginning with This operation does not indicate the state of the access key. The key might be active, inactive, or deleted. Active keys might not have permissions to perform an operation. Providing a deleted access key might return an error that the key doesn't exist. |
GetCallerIdentityCommand | Returns details about the IAM user or role whose credentials are used to call the operation. No permissions are required to perform this operation. If an administrator attaches a policy to your identity that explicitly denies access to the |
GetFederationTokenCommand | Returns a set of temporary security credentials (consisting of an access key ID, a secret access key, and a security token) for a user. A typical use is in a proxy application that gets temporary security credentials on behalf of distributed applications inside a corporate network. You must call the Although it is possible to call You can create a mobile-based or browser-based app that can authenticate users using a web identity provider like Login with Amazon, Facebook, Google, or an OpenID Connect-compatible identity provider. In this case, we recommend that you use Amazon Cognito or Session duration The temporary credentials are valid for the specified duration, from 900 seconds (15 minutes) up to a maximum of 129,600 seconds (36 hours). The default session duration is 43,200 seconds (12 hours). Temporary credentials obtained by using the root user credentials have a maximum duration of 3,600 seconds (1 hour). Permissions You can use the temporary credentials created by
You can use temporary credentials for single sign-on (SSO) to the console. You must pass an inline or managed session policy to this operation. You can pass a single JSON policy document to use as an inline session policy. You can also specify up to 10 managed policy Amazon Resource Names (ARNs) to use as managed session policies. The plaintext that you use for both inline and managed session policies can't exceed 2,048 characters. Though the session policy parameters are optional, if you do not pass a policy, then the resulting federated user session has no permissions. When you pass session policies, the session permissions are the intersection of the IAM user policies and the session policies that you pass. This gives you a way to further restrict the permissions for a federated user. You cannot use session policies to grant more permissions than those that are defined in the permissions policy of the IAM user. For more information, see Session Policies in the IAM User Guide. For information about using You can use the credentials to access a resource that has a resource-based policy. If that policy specifically references the federated user session in the Tags (Optional) You can pass tag key-value pairs to your session. These are called session tags. For more information about session tags, see Passing Session Tags in STS in the IAM User Guide. You can create a mobile-based or browser-based app that can authenticate users using a web identity provider like Login with Amazon, Facebook, Google, or an OpenID Connect-compatible identity provider. In this case, we recommend that you use Amazon Cognito or An administrator must grant you the permissions necessary to pass session tags. The administrator can also create granular permissions to allow you to pass only specific session tags. For more information, see Tutorial: Using Tags for Attribute-Based Access Control in the IAM User Guide. Tag key–value pairs are not case sensitive, but case is preserved. This means that you cannot have separate |
GetSessionTokenCommand | Returns a set of temporary credentials for an Amazon Web Services account or IAM user. The credentials consist of an access key ID, a secret access key, and a security token. Typically, you use MFA-enabled IAM users must call No permissions are required for users to perform this operation. The purpose of the Session Duration The Permissions The temporary security credentials created by
The credentials that Although it is possible to call For more information about using |
STSClient Configuration
Parameter | Type | Description |
---|
Parameter | Type | Description |
---|---|---|
defaultsMode Optional | DefaultsMode | Provider<DefaultsMode> | The @smithy/smithy-client#DefaultsMode that will be used to determine how certain default configuration options are resolved in the SDK. |
disableHostPrefix Optional | boolean | Disable dynamically changing the endpoint of the client based on the hostPrefix trait of an operation. |
extensions Optional | RuntimeExtension[] | Optional extensions |
logger Optional | Logger | Optional logger for logging debug/info/warn/error. |
maxAttempts Optional | number | Provider<number> | Value for how many times a request will be made at most in case of retry. |
profile Optional | string | Setting a client profile is similar to setting a value for the AWS_PROFILE environment variable. Setting a profile on a client in code only affects the single client instance, unlike AWS_PROFILE.When set, and only for environments where an AWS configuration file exists, fields configurable by this file will be retrieved from the specified profile within that file. Conflicting code configuration and environment variables will still have higher priority.For client credential resolution that involves checking the AWS configuration file, the client's profile (this value) will be used unless a different profile is set in the credential provider options. |
region Optional | string | Provider<string> | The AWS region to which this client will send requests |
requestHandler Optional | __HttpHandlerUserInput | The HTTP handler to use or its constructor options. Fetch in browser and Https in Nodejs. |
retryMode Optional | string | Provider<string> | Specifies which retry algorithm to use. |
useDualstackEndpoint Optional | boolean | Provider<boolean> | Enables IPv6/IPv4 dualstack endpoint. |
useFipsEndpoint Optional | boolean | Provider<boolean> | Enables FIPS compatible endpoints. |
Additional config fields are described in the full configuration type: STSClientConfig