generated: '2026-09-09'
method: searched
source: https://www.ftc.gov/developer
specification: API Commons Authentication
specificationVersion: '0.1'
provider: Federal Trade Commission
providerId: federal-trade-commission
docs:
  - https://www.ftc.gov/developer
  - https://www.ftc.gov/developer/api/v0/endpoints/do-not-call-dnc-reported-calls-data-api
  - https://api.data.gov/docs/developer-manual/
description: >-
  The public FTC API (https://api.ftc.gov/v0) is fronted by api.data.gov (the GSA-run
  API Umbrella gateway). Every request must carry an api.data.gov API key. There is no
  OAuth, no OpenID Connect, no mTLS and no per-user token: one shared key per consumer,
  self-issued through the api.data.gov signup form the FTC developer page links to.
  Verified live on 2026-09-09 — an unkeyed request to https://api.ftc.gov/openapi.json
  returned HTTP 403 with {"error":{"code":"API_KEY_MISSING"}}.
schemes:
  - id: api-data-gov-key-query
    type: apiKey
    in: query
    name: api_key
    description: >-
      api.data.gov key passed as the api_key query-string parameter. This is the form the
      FTC's own documented examples use (…/v0/dnc-complaints?api_key=DEMO_KEY).
    applies_to:
      - https://api.ftc.gov/v0/dnc-complaints
      - https://api.ftc.gov/v0/hsr-early-termination-notices
    source: https://www.ftc.gov/developer
  - id: api-data-gov-key-header
    type: apiKey
    in: header
    name: X-Api-Key
    description: >-
      The same api.data.gov key passed in the X-Api-Key request header. Preferred over the
      query parameter because the key does not then appear in logs or referrers.
    applies_to:
      - https://api.ftc.gov/v0/dnc-complaints
      - https://api.ftc.gov/v0/hsr-early-termination-notices
    source: https://www.ftc.gov/developer/api/v0/endpoints/hsr-early-termination-notices
  - id: api-data-gov-key-basic
    type: http
    scheme: basic
    description: >-
      api.data.gov also accepts the key as the HTTP Basic username with an empty password.
      Documented by the gateway operator, not by the FTC.
    source: https://api.data.gov/docs/developer-manual/
key_issuance:
  issuer: api.data.gov (U.S. General Services Administration)
  signup: https://api.data.gov/signup/
  self_service: true
  cost: free
  approval: instant, email-verified
  note: >-
    The key is an api.data.gov key, not an FTC-issued credential — the same key works
    against every api.data.gov-fronted federal API.
transport:
  https_required: true
  http_behavior: HTTP requests are rejected with HTTP 400 / HTTPS_REQUIRED
  source: https://www.ftc.gov/developer/api/v0/endpoints/hsr-early-termination-notices
oauth: false
openid_connect: false
mtls: false
scopes: false
scopes_note: >-
  No scope surface exists. The API is read-only and a key carries no per-resource
  permissions, so scopes/ is deliberately absent for this provider.
gated_surfaces:
  - name: National Do Not Call Registry (telemarketer access)
    url: https://telemarketing.donotcall.gov
    auth: account registration + annual fee, provisioned by the FTC contractor
    public_contract: false
  - name: Consumer Sentinel Network
    url: https://www.ftc.gov/enforcement/consumer-sentinel-network
    auth: vetted law-enforcement membership
    public_contract: false