generated: '2026-07-18'
method: searched
source:
  - https://docs.codenow.com/api/overview/authentication/
  - https://docs.codenow.com/api/overview/api-versions/
  - https://docs.codenow.com/api/overview/rate-limitation/
authentication:
  style: api-key-header
  header: X-Codenow-Api-Key
  also: OAuth 2.0 for the MCP server
  see: authentication/codenow-authentication.yml
versioning:
  style: media-type (Accept header)
  media_type: application/vnd.codenow.vX+json
  current: application/vnd.codenow.v1+json
  see: lifecycle/codenow-lifecycle.yml
content_negotiation:
  request_media_type: application/vnd.codenow.v1+json
  detail: Version and representation are negotiated through the Accept media type.
rate_limit_signaling:
  headers: [x-ratelimit-limit, x-ratelimit-remaining, x-ratelimit-reset]
  exceeded_status: 429
  retry_guidance: exponential backoff
  see: rate-limits/codenow-rate-limits.yml
idempotency:
  supported: unknown
  note: No idempotency-key mechanism is documented in the public API overview.
pagination:
  style: unknown
  note: Not documented in the public API overview pages reviewed.
error_envelope:
  format: unknown
  note: No public OpenAPI or error reference found to capture the error envelope shape.
request_tracing:
  header: unknown
notes:
  - No public OpenAPI/Swagger document was located; conventions captured from the published API overview pages only.