API Evangelist enhancements for the GroundTruth Ads Manager Public API

overlay: 1.0.0
info:
  title: API Evangelist enhancements for the GroundTruth Ads Manager Public API
  version: 1.0.0
extends: openapi/groundtruth-ads-manager-openapi.yml
x-generated: '2026-08-12'
x-method: generated
x-source: >-
  Enhancements over the verbatim provider document harvested from
  https://api-public.groundtruth.com/openapi.json on 2026-08-12
  (openapi/_original/groundtruth-ads-manager-openapi.json). The original is never mutated.
actions:
- target: $.info
  description: >-
    Record where this contract came from and how it was verified, plus the API Evangelist artifacts
    derived from it.
  update:
    x-apievangelist-source: https://api-public.groundtruth.com/openapi.json
    x-apievangelist-harvested: '2026-08-12'
    x-apievangelist-http-status: 200
    x-apievangelist-ownership-check: >-
      Served by api-public.groundtruth.com, the provider's own host, which also serves Swagger UI at
      /docs titled "Ads Manager API" with a favicon on cf.groundtruth.com. The provider's published
      reference at api-docs.groundtruth.com names the same host in servers[] and the same
      X-GT-API-KEY / X-GT-USER-ID auth headers.
    x-apievangelist-artifacts:
      authentication: authentication/groundtruth-authentication.yml
      conventions: conventions/groundtruth-conventions.yml
      errors: errors/groundtruth-problem-types.yml
      data_model: data-model/groundtruth-data-model.yml
      lifecycle: lifecycle/groundtruth-lifecycle.yml
      conformance: conformance/groundtruth-conformance.yml
      rate_limits: rate-limits/groundtruth-rate-limits.yml
      agentic_access: agentic-access/groundtruth-agentic-access.yml
      skills: skills/_index.yml
- target: $
  description: >-
    The provider's live document has NO servers[] block, so a generated client cannot resolve a base
    URL. Supply the real production host, confirmed live (GET /health -> 200 "ok", 2026-08-12).
  update:
    servers:
    - url: https://api-public.groundtruth.com
      description: Production
- target: $.components.securitySchemes
  description: >-
    248 of 259 operations require a `session` scheme that is NOT defined in the provider's
    securitySchemes. This documents the gap; it does not guess the mechanism.
  update:
    x-apievangelist-undefined-scheme:
      name: session
      referenced_by_operations: 248
      defined: false
      note: >-
        Referenced in operation security[] but absent from components.securitySchemes. Believed to
        be the ads.groundtruth.com browser session cookie, but the provider does not say so, so no
        definition is asserted here. API key callers should use api-key + user-id together.
- target: $.info
  description: Record the runtime and error semantics the contract does not declare.
  update:
    x-apievangelist-runtime:
      trace_header: x-gt-trace-id
      trace_header_declared_in_spec: false
      etag: true
      rate_limit_headers: none observed
      status_429_declared: false
      idempotency: not supported
      error_envelope: '{"errors":[{"code","message","fields"}]}'
      error_format: proprietary (not RFC 9457)
- target: $.info
  description: >-
    Record the drift between what the provider documents and what the provider serves, measured
    2026-08-12.
  update:
    x-apievangelist-contract-drift:
      live_operations: 259
      documented_operations: 270
      documented_but_not_served: 11
      detail: lifecycle/groundtruth-lifecycle.yml#contract_drift