# AWS Security Token Service API

**Provider:** AWS Security Token Service
**Category:** auth
**Base URL:** `https://sts.amazonaws.com`
**Auth:** api-key — `Authorization: YOUR_API_KEY`
**Rate Limit:** 100 req/s per region (default)
**Free Tier:** Yes — available
**Pricing:** Enterprise / contact sales (subscription)
**Docs:** https://api.apis.guru/v2/specs/amazonaws.com:sts/2011-06-15.json

## Description

<fullname>Security Token Service</fullname> <p>Security Token Service (STS) enables you to request temporary, limited-privilege credentials for Identity and Access Management (IAM) users or for users that you authenticate (federated users). This guide provides descriptions of the STS API. For more information about using this service, see <a href="https://docs.aws.amazon.com/IAM/latest/UserGuide/i

## Endpoints

| Method | Endpoint | Description |
|--------|----------|-------------|
| GET | `https://sts.amazonaws.com/#Action=AssumeRole` | <p>Returns a set of temporary security credentials that you can use to access Am |
| POST | `https://sts.amazonaws.com/#Action=AssumeRole` | <p>Returns a set of temporary security credentials that you can use to access Am |
| GET | `https://sts.amazonaws.com/#Action=AssumeRoleWithSAML` | <p>Returns a set of temporary security credentials for users who have been authe |
| POST | `https://sts.amazonaws.com/#Action=AssumeRoleWithSAML` | <p>Returns a set of temporary security credentials for users who have been authe |
| GET | `https://sts.amazonaws.com/#Action=AssumeRoleWithWebIdentity` | <p>Returns a set of temporary security credentials for users who have been authe |
| POST | `https://sts.amazonaws.com/#Action=AssumeRoleWithWebIdentity` | <p>Returns a set of temporary security credentials for users who have been authe |
| GET | `https://sts.amazonaws.com/#Action=DecodeAuthorizationMessage` | <p>Decodes additional information about the authorization status of a request fr |
| POST | `https://sts.amazonaws.com/#Action=DecodeAuthorizationMessage` | <p>Decodes additional information about the authorization status of a request fr |

## Authentication

API key in the Authorization header

```
Authorization: YOUR_API_KEY
```

## Sample Request

```bash
curl 'https://sts.amazonaws.com/#Action=AssumeRole' \
  -H 'Authorization: YOUR_API_KEY'
```

## Sample Response

```json
{}
```

## Pricing Details

Free with AWS account. AWS STS has no additional charges beyond IAM costs.

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*Source: [API Map](https://apimap.dev/apis/aws-security-token-service/) — CC BY 4.0*