generated: '2026-08-14'
method: searched
source: >-
  https://docs.fullcontact.com/changelog, https://status.fullcontact.com/,
  https://docs.fullcontact.com/docs/response-codes-errors
description: >-
  Versioning, deprecation and operational posture for the FullContact V3 API.
  FullContact versions in the URI path, runs a public Statuspage, and announces
  retirements through its docs changelog. What it does NOT publish is a written
  deprecation policy with a notice window, or RFC 8594 Sunset/Deprecation
  headers — retirement is communicated in prose and enforced with 410 Gone.

versioning:
  scheme: uri-path
  current: v3
  path_prefix: /v3
  docs: https://docs.fullcontact.com
  note: >-
    V1 is retired and returns 410 Gone. V2 person and company endpoints are
    superseded by V3, with published migration guides.

deprecation:
  policy_url: null
  policy_published: false
  sunset_header: false
  deprecation_header: false
  announcement_channel: https://docs.fullcontact.com/changelog
  enforcement:
    status: 410
    detail: >-
      "This resource cannot be found. You will receive this status code if you
      attempt to query our deprecated V1 endpoints."
    source: https://docs.fullcontact.com/docs/response-codes-errors
  announced_retirements:
    - name: Key People, v2 Company APIs & v3 Company Name Lookup
      url: https://docs.fullcontact.com/changelog/key-people-v2-company-apis-v3-company-name-lookup-deprecated
      note: Most recent deprecation announcement in the docs changelog.
  migration_guides:
    - title: Legacy V2 Person Migration
      url: https://docs.fullcontact.com/docs/migrating-from-legacy-v2
    - title: V2 Company Search by Name Migration
      url: https://docs.fullcontact.com/docs/v2-company-company-search-by-name-migration
    - title: V2 Company Domain Lookup Migration
      url: https://docs.fullcontact.com/docs/v2-company-domain-lookup-migration

status_page: https://status.fullcontact.com/
status_page_platform: Atlassian Statuspage

sla:
  url: null
  uptime_target: null
  note: >-
    No public SLA or uptime commitment was found. FullContact's commercial
    terms are sales-gated (see plans/fullcontact-plans-pricing.yml), so an SLA
    is presumed contractual rather than published.

changelog: changelog/fullcontact-changelog.yml

deprecated_operations: []

x-evidence:
  - fetched: '2026-08-14'
    url: https://status.fullcontact.com
    http_status: 200
  - fetched: '2026-08-14'
    url: https://docs.fullcontact.com/changelog
    http_status: 200
  - fetched: '2026-08-14'
    url: https://docs.fullcontact.com/docs/response-codes-errors.md
    http_status: 200