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

InvokeActStep

Executes the next step of an act, processing tool call results and returning new tool calls if needed.

Request Syntax


PUT /workflow-definitions/workflowDefinitionName/workflow-runs/workflowRunId/sessions/sessionId/acts/actId/invoke-step/ HTTP/1.1
Content-type: application/json

{
   "callResults": [ 
      { 
         "callId": "string",
         "content": [ 
            { ... }
         ]
      }
   ],
   "previousStepId": "string"
}

URI Request Parameters

The request uses the following URI parameters.

actId

The unique identifier of the act to invoke the next step for.

Pattern: [0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}

Required: Yes

sessionId

The unique identifier of the session containing the act.

Pattern: [0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}

Required: Yes

workflowDefinitionName

The name of the workflow definition containing the act.

Length Constraints: Minimum length of 1. Maximum length of 40.

Pattern: [a-zA-Z0-9_-]{1,40}

Required: Yes

workflowRunId

The unique identifier of the workflow run containing the act.

Pattern: [0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}

Required: Yes

Request Body

The request accepts the following data in JSON format.

callResults

The results from previous tool calls that the act requested.

Type: Array of CallResult objects

Array Members: Minimum number of 1 item. Maximum number of 100 items.

Required: Yes

previousStepId

The identifier of the previous step, used for tracking execution flow.

Type: String

Pattern: [0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}

Required: No

Response Syntax


HTTP/1.1 200
Content-type: application/json

{
   "calls": [ 
      { 
         "callId": "string",
         "input": JSON value,
         "name": "string"
      }
   ],
   "stepId": "string"
}

Response Elements

If the action is successful, the service sends back an HTTP 200 response.

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

calls

A list of tool calls that the act wants to execute in this step.

Type: Array of Call objects

stepId

The unique identifier for this execution step.

Type: String

Pattern: [0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}

Errors

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

AccessDeniedException

You don't have sufficient permissions to perform this action.

message: You don't have sufficient permissions to perform this action. Verify your IAM permissions and try again.

HTTP Status Code: 403

ConflictException

The request could not be completed due to a conflict with the current state of the resource.

message: The requested operation conflicts with the current state of the resource.
resourceId: The identifier of the resource that caused the conflict.
resourceType: The type of resource that caused the conflict.

HTTP Status Code: 409

InternalServerException

An internal server error occurred. Please try again later.

message: The service encountered an internal error. Try again later.
reason: The reason for the internal server error.
retryAfterSeconds: The number of seconds to wait before retrying the request.

HTTP Status Code: 500

ResourceNotFoundException

The requested resource was not found.

message: The specified resource was not found.
resourceId: The identifier of the resource that wasn't found.
resourceType: The type of resource that wasn't found.

HTTP Status Code: 404

ServiceQuotaExceededException

The request would exceed a service quota limit.

message: The request would exceed one or more service quotas for your account.
quotaCode: The code for the specific quota that was exceeded.
resourceId: The identifier of the resource that exceeded the quota.
resourceType: The type of resource that exceeded the quota.
serviceCode: The service code for the quota that was exceeded.

HTTP Status Code: 402

ThrottlingException

The request was throttled due to too many requests. Please try again later.

message: The request was denied due to request throttling.
quotaCode: The quota code related to the throttling.
retryAfterSeconds: The number of seconds to wait before retrying the throttled request.
serviceCode: The service code where throttling occurred.

HTTP Status Code: 429

ValidationException

The input parameters for the request are invalid.

fieldList: The list of fields that failed validation.
message: The input fails to satisfy the constraints specified by the service.
reason: The reason for the validation failure.

HTTP Status Code: 400