generated: '2026-07-18'
method: searched
source: https://developers.useascend.com/
note: >-
  Cross-cutting request/response semantics for the Ascend API V1, harvested from the developer
  docs and the reconstructed OpenAPI. Ascend does not document an idempotency-key contract, so no
  Idempotency pointer is emitted.
authentication:
  style: bearer
  scheme: http bearer
  header: 'Authorization: Bearer <token>'
  detail: authentication/ascend-authentication.yml
  sandbox_keys: Request via developers@useascend.com
pagination:
  style: page-number
  params:
  - name: page
    in: query
    description: Page number for list endpoints.
versioning:
  scheme: uri-path
  current: v1
  base_path: /v1
error_envelope:
  shape: '{"errors": [ ... ]}'
  media_type: application/json
  format: non-rfc9457
  catalog: errors/ascend-problem-types.yml
webhooks:
  signature_header: X-Ascend-Signature
  algorithm: HMAC-SHA256
  catalog: asyncapi/ascend-webhooks.yml
identifiers:
  style: uuid
  note: Resource ids are UUIDs (format uuid in the spec); monetary amounts are integer *_cents fields.
idempotency:
  supported: false
  note: No Idempotency-Key header or documented idempotency contract found.
rate_limiting:
  documented: false