> ## Documentation Index
> Fetch the complete documentation index at: https://nixtla.io/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# Submit an async execute_step job

> Queues an execute_step job and returns immediately with its `job_id`. The body is a zip of parquet members and the call parameters travel in the `nixtla-metadata` header, not as JSON. Poll `GET /v2/execute_step/jobs/{job_id}` for its state, then fetch the zip from `/result` once it reads `succeeded`.



## OpenAPI

````yaml /openapi.json post /v2/execute_step/async
openapi: 3.1.0
info:
  title: Nixtla Forecast API
  description: >-
    API for TimeGPT forecast. Just send your data as json and get results. We do
    the heavy lifting.
  version: 0.4.2
servers:
  - url: https://api.nixtla.io
security: []
paths:
  /v2/execute_step/async:
    post:
      tags:
        - async jobs
      summary: Submit an async execute_step job
      description: >-
        Queues an execute_step job and returns immediately with its `job_id`.
        The body is a zip of parquet members and the call parameters travel in
        the `nixtla-metadata` header, not as JSON. Poll `GET
        /v2/execute_step/jobs/{job_id}` for its state, then fetch the zip from
        `/result` once it reads `succeeded`.
      operationId: submit_async_execute_step_v2_execute_step_async_post
      responses:
        '202':
          description: Successful Response
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/AsyncJobSubmitResponse'
      security:
        - HTTPBearer: []
components:
  schemas:
    AsyncJobSubmitResponse:
      properties:
        job_id:
          type: string
          title: Job Id
          description: >-
            Identifier for the accepted job. Prefixed per task (e.g. `fc-` for
            forecast).
          examples:
            - fc-4f2a1c9e8b7d4a6f9c3e1b5d7a9f2c4e
      type: object
      required:
        - job_id
      title: AsyncJobSubmitResponse
      description: >-
        The 202 every async submit returns. Shared by all tasks — they differ in
        request, not reply.
  securitySchemes:
    HTTPBearer:
      type: http
      description: HTTPBearer
      scheme: bearer

````