name: Autodesk Fusion Rate Limits
description: >-
  Autodesk Platform Services (APS) applies rate limiting across all APIs
  including Fusion-related services. Rate limits control the maximum number
  of API calls an application can make within a time window. When limits are
  exceeded, APIs return HTTP 429 (Too Many Requests) with a Retry-After header.
  Specific per-endpoint limits are documented in each API's reference;
  ADN members may request higher limits for production workloads.
url: https://aps.autodesk.com/blog/rate-limiting
created: "2026-06-13"
modified: "2026-06-13"

rateLimits:
  - api: All APS APIs (General Policy)
    description: >-
      The general APS rate limiting framework applies a per-minute request
      cap per application (client credentials). Requests exceeding the limit
      receive HTTP 429 with a Retry-After response header indicating seconds
      to wait before retrying.
    type: requests-per-minute
    limit: varies-by-endpoint
    window: 60
    windowUnit: seconds
    errorCode: 429
    retryAfterHeader: true
    notes: >-
      Specific limits vary by API product. Consult individual API documentation
      for exact values. ADN members can request increased limits.

  - api: Design Automation API (Fusion Automation)
    description: >-
      The GET /workitems/:id endpoint for the Fusion (and other) Design
      Automation APIs is rate-limited to 150 requests per minute (RPM).
      This limit is enforced to prevent polling abuse and encourage
      webhook-based completion notifications.
    type: requests-per-minute
    limit: 150
    window: 60
    windowUnit: seconds
    endpoint: GET /design/v3/workitems/:id
    errorCode: 429
    retryAfterHeader: true
    notes: >-
      Autodesk recommends webhook-based notifications instead of polling
      GET workitem status to avoid hitting this rate limit.
    referenceUrl: >-
      https://aps.autodesk.com/blog/automation-get-workitemsid-will-be-enforced-rate-limit-150-rate-minute-rpm

  - api: Data Management API
    description: >-
      Rate limits apply to Data Management API calls for hubs, projects,
      folders, and files. Specific limits are documented in the Data Management
      API developer guide and vary by endpoint type (read vs. write).
    type: requests-per-minute
    limit: varies-by-endpoint
    window: 60
    windowUnit: seconds
    errorCode: 429
    retryAfterHeader: true
    referenceUrl: https://aps.autodesk.com/en/docs/data/v2/developers_guide/rate-limiting

  - api: Webhooks API
    description: >-
      Webhook-related API endpoints for Fusion and other APS services are
      rate-limited. The Webhooks API documentation specifies limits around
      creating and managing webhook subscriptions.
    type: requests-per-minute
    limit: 300
    window: 60
    windowUnit: seconds
    errorCode: 429
    retryAfterHeader: true
    referenceUrl: >-
      https://aps.autodesk.com/en/docs/webhooks/v1/developers_guide/rate-limits/webhooks-rate-limits

  - api: Parameters API
    description: >-
      The Parameters API (used with Fusion parametric models) has its own
      rate limit quotas documented in the APS developer portal.
    type: requests-per-minute
    limit: varies-by-endpoint
    window: 60
    windowUnit: seconds
    errorCode: 429
    retryAfterHeader: true
    referenceUrl: >-
      https://aps.autodesk.com/en/docs/parameters/v1/overview/rate-limits/Parameters-API-rate-limits/

policies:
  - name: HTTP 429 Response
    description: >-
      When any APS API rate limit is exceeded, the service returns HTTP 429
      Too Many Requests with a Retry-After header specifying the number of
      seconds to wait before the next attempt.
    errorCode: 429
    headerName: Retry-After
    headerUnit: seconds

  - name: Increasing Rate Limits
    description: >-
      Autodesk Developer Network (ADN) members can request higher rate limits
      for production applications by submitting a rate limit change request
      form and a support ticket with documented usage data and a justified
      target limit.
    url: https://aps.autodesk.com/blog/rate-limiting

  - name: Fusion Operations API Sunset Rate Limiting
    description: >-
      Previous versions of the Fusion Operations API enter a sunset phase with
      phased rate-limit reductions before retirement. Developers should migrate
      to the latest API version to avoid hitting reduced limits.