generated: '2026-07-20'
method: searched
source: openapi/nestcoin-external-gateway-openapi-original.json
docs: https://docs.onboard.xyz/onboard-exchange/connect/query-parameters
authentication:
  style: api-key + session-token + hmac-signature
  headers: [x-api-key, x-auth-token, x-signature, x-timestamp]
  see: authentication/nestcoin-authentication.yml
idempotency:
  supported: false
  note: No Idempotency-Key header documented; retries on write operations are not guaranteed idempotent.
pagination:
  style: page-number
  params: [page, size]
  note: List endpoints (orders, activities, beneficiaries) accept page + size query parameters.
versioning:
  scheme: none-in-path
  current: '3.0.2'
  note: API version tracked in the OpenAPI info.version (external gateway 3.0.2); no version prefix in paths.
error_envelope:
  media_type: application/json
  see: errors/nestcoin-problem-types.yml
webhooks:
  supported: true
  event_envelope: '{ event, data, timestamp }'
  signing: HMAC-SHA256 over x-timestamp + payload, verified via x-signature header
  retries: up to 3 on non-200
  see: asyncapi/nestcoin-webhooks.yml
rate_limiting:
  signaling: not documented in the OpenAPI or public docs
cross_links:
  errors: errors/nestcoin-problem-types.yml
  lifecycle: lifecycle/nestcoin-lifecycle.yml
  authentication: authentication/nestcoin-authentication.yml