Request Syntax URI Request Parameters Request Body Response Syntax Response Elements Errors See Also

StartPolicyGeneration

Initiates the AI-powered generation of Cedar policies from natural language descriptions within the AgentCore Policy system. This feature enables both technical and non-technical users to create policies by describing their authorization requirements in plain English, which is then automatically translated into formal Cedar policy statements. The generation process analyzes the natural language input along with the Gateway's tool context to produce validated policy options. Generated policy assets are automatically deleted after 7 days, so you should review and create policies from the generated assets within this timeframe. Once created, policies are permanent and not subject to this expiration. Generated policies should be reviewed and tested in log-only mode before deploying to production. Use this when you want to describe policy intent naturally rather than learning Cedar syntax, though generated policies may require refinement for complex scenarios.

Request Syntax


POST /policy-engines/policyEngineId/policy-generations HTTP/1.1
Content-type: application/json

{
   "clientToken": "string",
   "content": { ... },
   "name": "string",
   "resource": { ... }
}

URI Request Parameters

The request uses the following URI parameters.

policyEngineId

The identifier of the policy engine that provides the context for policy generation. This engine's schema and tool context are used to ensure generated policies are valid and applicable.

Length Constraints: Minimum length of 12. Maximum length of 59.

Pattern: [A-Za-z][A-Za-z0-9_]*-[a-z0-9_]{10}

Required: Yes

Request Body

The request accepts the following data in JSON format.

clientToken

A unique, case-sensitive identifier to ensure the idempotency of the request. The AWS SDK automatically generates this token, so you don't need to provide it in most cases. If you retry a request with the same client token, the service returns the same response without starting a duplicate generation.

Type: String

Length Constraints: Minimum length of 33. Maximum length of 256.

Pattern: [a-zA-Z0-9](-*[a-zA-Z0-9]){0,256}

Required: No

content

The natural language description of the desired policy behavior. This content is processed by AI to generate corresponding Cedar policy statements that match the described intent.

Type: Content object

Note: This object is a Union. Only one member of this object can be specified or returned.

Required: Yes

name

A customer-assigned name for the policy generation request. This helps track and identify generation operations, especially when running multiple generations simultaneously.

Type: String

Length Constraints: Minimum length of 1. Maximum length of 48.

Pattern: [A-Za-z][A-Za-z0-9_]*

Required: Yes

resource

The resource information that provides context for policy generation. This helps the AI understand the target resources and generate appropriate access control rules.

Type: Resource object

Note: This object is a Union. Only one member of this object can be specified or returned.

Required: Yes

Response Syntax


HTTP/1.1 202
Content-type: application/json

{
   "createdAt": "string",
   "findings": "string",
   "name": "string",
   "policyEngineId": "string",
   "policyGenerationArn": "string",
   "policyGenerationId": "string",
   "resource": { ... },
   "status": "string",
   "statusReasons": [ "string" ],
   "updatedAt": "string"
}

Response Elements

If the action is successful, the service sends back an HTTP 202 response.

The following data is returned in JSON format by the service.

createdAt

The timestamp when the policy generation request was created.

Type: Timestamp

findings

Initial findings from the policy generation process.

Type: String

name

The customer-assigned name for the policy generation request.

Type: String

Length Constraints: Minimum length of 1. Maximum length of 48.

Pattern: [A-Za-z][A-Za-z0-9_]*

policyEngineId

The identifier of the policy engine associated with the started policy generation.

Type: String

Length Constraints: Minimum length of 12. Maximum length of 59.

Pattern: [A-Za-z][A-Za-z0-9_]*-[a-z0-9_]{10}

policyGenerationArn

The ARN of the created policy generation request.

Type: String

Length Constraints: Minimum length of 103. Maximum length of 210.

Pattern: arn:aws[-a-z]{0,7}:bedrock-agentcore:[a-z0-9-]{9,15}:[0-9]{12}:policy-engine/[a-zA-Z][a-zA-Z0-9-_]{0,47}-[a-zA-Z0-9_]{10}/policy-generation/[a-zA-Z][a-zA-Z0-9-_]{0,47}-[a-zA-Z0-9_]{10}

policyGenerationId

The unique identifier assigned to the policy generation request for tracking progress.

Type: String

Length Constraints: Minimum length of 12. Maximum length of 59.

Pattern: [A-Za-z][A-Za-z0-9_]*-[a-z0-9_]{10}

resource

The resource information associated with the policy generation request.

Type: Resource object

Note: This object is a Union. Only one member of this object can be specified or returned.

status

The initial status of the policy generation request.

Type: String

Valid Values: GENERATING | GENERATED | GENERATE_FAILED | DELETE_FAILED

statusReasons

Additional information about the generation status.

Type: Array of strings

updatedAt

The timestamp when the policy generation was last updated.

Type: Timestamp

Errors

For information about the errors that are common to all actions, see Common Errors.

AccessDeniedException

This exception is thrown when a request is denied per access permissions

HTTP Status Code: 403

ConflictException

This exception is thrown when there is a conflict performing an operation

HTTP Status Code: 409

InternalServerException

This exception is thrown if there was an unexpected error during processing of request

HTTP Status Code: 500

ResourceNotFoundException

This exception is thrown when a resource referenced by the operation does not exist

HTTP Status Code: 404

ServiceQuotaExceededException

This exception is thrown when a request is made beyond the service quota

HTTP Status Code: 402

ThrottlingException

This exception is thrown when the number of requests exceeds the limit

HTTP Status Code: 429

ValidationException

The input fails to satisfy the constraints specified by the service.

HTTP Status Code: 400