generated: '2026-09-13'
method: derived
source: https://coinnudge.site/data/api-docs
name: CoinNudge Data API Conformance
description: >-
  Cross-cutting standards assertions for the CoinNudge Data API, derived from the
  documented behavior. This is a read-only crypto market-data API with no
  regulated-domain standard in play (the operator explicitly claims no financial
  license or registration).
conformance:
  - id: offset-pagination
    conforms: true
    evidence: >-
      Documented limit/offset params with has_more, next_offset, total response
      fields (https://coinnudge.site/data/api-docs).
  - id: rfc9457
    conforms: false
    evidence: >-
      Errors use a FastAPI-style {"detail": "..."} JSON envelope, not
      application/problem+json (confirmed on live 401 responses).
  - id: oauth2
    conforms: false
    evidence: Authentication is a static Bearer API key (cnd_ prefix); no OAuth2 flow.
  - id: idempotency
    conforms: false
    evidence: Read-only GET surface; no Idempotency-Key mechanism documented.
domain_standard:
  present: false
  note: >-
    Crypto market-data delivery has no adopted machine-readable domain standard
    (no OpenRTB/FHIR/SCIM/ISO-20022 analogue applies). Reward-only field left
    empty; nothing invented.