Featureflip Management API — API Evangelist enrichment overlay

overlay: 1.0.0
info:
  title: Featureflip Management API — API Evangelist enrichment overlay
  version: 1.0.0
extends: ../openapi/featureflip-management-api.json
x-provenance:
  generated: '2026-09-13'
  method: generated
  source: >-
    API Evangelist enrichment. Captures cross-cutting semantics documented at
    featureflip.io but not carried inline in the OpenAPI (idempotency, rate-limit
    headers, cursor pagination, stable error envelope). Non-mutating to the
    original spec.
actions:
  - target: $.info
    description: Record the stable error contract, auth token prefixes, and docs.
    update:
      x-error-envelope: PublicApiErrorEnvelope (frozen snake_case; error/message/docs_url required)
      x-auth-token-prefixes: [ffp_ (personal), ffs_ (service)]
      x-docs: https://featureflip.io/docs/management-api/
  - target: "$.paths[*][?(@.parameters)]"
    description: Note that create (POST) operations accept an Idempotency-Key header.
    update:
      x-idempotency-key: supported on all resource-creating POST operations (409 idempotency_key_in_progress on concurrent same-key)
  - target: "$.paths[*].get"
    description: Note cursor pagination convention on list endpoints.
    update:
      x-pagination:
        style: cursor
        request_param: cursor
        response_fields: [items, next_cursor]
  - target: "$.components.headers"
    description: Document the rate-limit response headers as a cross-cutting convention.
    update:
      x-rate-limit-headers: [X-RateLimit-Limit, X-RateLimit-Remaining, X-RateLimit-Reset, Retry-After]
      x-rate-limit-exhaustion: 429 rate_limited