generated: '2026-07-19'
method: searched
source: >-
  https://firebase.google.com/docs/reference,
  https://cloud.google.com/apis/design (Google API Improvement Proposals)
authentication:
  ref: authentication/firebase-authentication.yml
  styles: [api-key-query-param, oauth2-bearer, firebase-id-token-jwt, service-account]
pagination:
  style: page-token
  params: [pageSize, pageToken]
  response_fields: [nextPageToken]
  note: >-
    Google-hosted REST APIs (Management, Firestore) use AIP-158 token
    pagination. Realtime Database uses query params (orderBy, limitToFirst,
    limitToLast, startAt, endAt) rather than page tokens.
field_masks:
  param: updateMask
  note: PATCH/update calls accept an updateMask (AIP-134) to update selected fields.
versioning:
  style: uri-path
  ref: lifecycle/firebase-lifecycle.yml
error_envelope:
  format: google.rpc.Status
  shape: '{ "error": { "code": <int>, "message": <string>, "status": <string>, "details": [] } }'
  content_type: application/json
  note: >-
    Not RFC 9457 problem+json; Firebase/Google REST APIs return the canonical
    Google error object. See errors handling in the per-API reference.
  ref: errors/
request_tracing:
  note: >-
    Google Cloud requests can be correlated via the x-request-id / trace headers
    surfaced in Cloud Logging; no provider-documented client request-id contract
    on the Firebase REST surface.
idempotency:
  supported: false
  note: >-
    Firebase REST APIs do not document a general client-supplied
    Idempotency-Key header; writes are last-write-wins or transactional
    (Firestore transactions / RTDB conditional writes with ETags), not
    idempotency-key based. No Idempotency pointer emitted.
rate_limit_signaling:
  note: >-
    Enforced via per-project quotas in Google Cloud; 429/RESOURCE_EXHAUSTED on
    limit. Quotas managed in the Cloud console rather than per-response headers.