generated: '2026-07-19'
method: searched
source: https://github.com/Forecast-it/API/blob/master/README.md
api: Forecast API
summary: >-
  Forecast versions the API per-resource in the URL path. Backward-incompatible
  changes bump a resource's version marker while old URLs stay supported, so
  multiple resource versions (v1-v4) coexist. Deprecated endpoints are marked in
  the docs but continue to respond. Usage is bounded by a published fair-use
  policy rather than hard rate limits.
versioning:
  scheme: per-resource path segment (v1..v4)
  base: https://api.forecast.it/api/v1/
  stability: >-
    "If we change the API in backward-incompatible ways, we'll increment the
    version marker and maintain stable support for the old URLs."
  current_by_resource:
    tasks: v4
    time_registrations: v4
    persons: v2
    projects: v1 (v2 for financials)
deprecation:
  policy: >-
    Older resource versions and specific endpoints are marked DEPRECATED in the
    API docs but remain callable; consumers are steered to the newer version.
  header_signaling:
    sunset_header: not documented
    deprecation_header: not documented
  deprecated_examples:
  - GET /v2/tasks (superseded by v3/v4)
  - GET /v3/time_registrations (superseded by v4)
  - GET /projects/{projectId}/financials (v1, superseded by v2)
  - Milestones resource (renamed to Phases)
fair_use:
  policy_url: https://www.forecast.app/fair-use-policy
  note: Governs acceptable API usage volume in lieu of published rate-limit headers.
status_page:
  available: false
  probed:
  - url: https://status.forecast.app/
    status: no-response
sla:
  documented: false
change_communication:
  api_docs_repo: https://github.com/Forecast-it/API
  product_updates: https://support.forecast.app/hc/en-us
ownership_note: >-
  Forecast was acquired by Accelo in 2025; the forecast.app brand has been
  integrated into accelo.com, though the api.forecast.it API endpoints remain
  operational.