openapi: 3.2.0
info:
  title: Tvarka Atk Well Known API
  version: 1.3.0
  description: 'Operations tagged Well-known across 2 of this provider''s published API definitions: tvarka-atk-api-auth-openapi.yaml, tvarka-atk-api-openapi-original.json. Each path carries the servers of the definition it was published in.'
servers:
- url: https://atk.tvarka.pro/v1
  description: 'Production. Sandbox runs on the same host - provider credentials issued with

    environment=sandbox get the identical API against test-card material and are never billed.

    '
security:
- basicAuth: []
tags:
- name: Well-known
  description: Keys for verifying the optional `assertion` JWT.
paths:
  /.well-known/atk-jwks.json:
    servers:
    - url: https://atk.tvarka.pro
      description: Host root - the JWKS lives outside the /v1 base path.
    get:
      tags:
      - Well-known
      operationId: getJwks
      summary: JWKS for verifying the optional `assertion` JWT
      description: 'Public keys (by `kid`) for the ES256 signer. Rotation keeps current + previous keys published so

        in-flight assertions verify.

        '
      security: []
      responses:
        '200':
          description: Key set.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Jwks'
        '404':
          $ref: '#/components/responses/NotFound'
components:
  responses:
    NotFound:
      description: Unknown request.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'
  schemas:
    ErrorBody:
      type: object
      required:
      - code
      - message
      properties:
        code:
          $ref: '#/components/schemas/ErrorCode'
        message:
          type: string
        requestId:
          type: string
          format: uuid
        retryable:
          type: boolean
    Error:
      type: object
      required:
      - error
      properties:
        error:
          $ref: '#/components/schemas/ErrorBody'
    Jwks:
      type: object
      properties:
        keys:
          type: array
          items:
            type: object
            description: A JWK (EC P-256, `kid`, `use:sig`, `alg:ES256`).
    ErrorCode:
      type: string
      description: 'The full stable error-code catalog of the ATK API family (auth + sign + services);

        each endpoint returns the subset that applies to it. By HTTP status:

        400 invalid_json, missing_field, invalid_field, invalid_webhook_url, invalid_document_ref.

        401 invalid_basic_credentials, invalid_client_token, client_token_expired,

        operation_token_expired, invalid_download_token.

        403 origin_not_allowed, ip_not_allowed, format_not_allowed, document_ref_host_not_allowed,

        method_not_allowed, tenant_suspended, tier_forbidden.

        404 request_not_found, pairing_not_found, document_not_ready.

        409 request_terminal, operation_token_spent, identity_swap, idempotency_conflict,

        service_in_progress, pairing_not_available, pairing_already_claimed.

        410 pairing_expired. 413 document_too_large.

        422 cert_invalid, untrusted_chain, cert_revoked, cert_expired, not_qualified,

        cert_purpose_mismatch, signature_invalid, document_hash_mismatch, document_size_mismatch.

        429 rate_limited. 500 assembly_failed. 502 document_ref_fetch_failed.

        503 erasure_failed, pairing_service_unavailable, service_unavailable.

        The catalog can grow in minor versions - fall back to HTTP status semantics

        for codes you do not recognize.

        '
      enum:
      - invalid_json
      - missing_field
      - invalid_field
      - invalid_webhook_url
      - invalid_document_ref
      - invalid_basic_credentials
      - invalid_client_token
      - client_token_expired
      - operation_token_expired
      - invalid_download_token
      - origin_not_allowed
      - ip_not_allowed
      - format_not_allowed
      - document_ref_host_not_allowed
      - method_not_allowed
      - tenant_suspended
      - tier_forbidden
      - request_not_found
      - pairing_not_found
      - document_not_ready
      - request_terminal
      - operation_token_spent
      - identity_swap
      - idempotency_conflict
      - service_in_progress
      - pairing_not_available
      - pairing_already_claimed
      - pairing_expired
      - document_too_large
      - cert_invalid
      - untrusted_chain
      - cert_revoked
      - cert_expired
      - not_qualified
      - cert_purpose_mismatch
      - signature_invalid
      - document_hash_mismatch
      - document_size_mismatch
      - rate_limited
      - assembly_failed
      - document_ref_fetch_failed
      - erasure_failed
      - pairing_service_unavailable
      - service_unavailable
  securitySchemes:
    basicAuth:
      type: http
      scheme: basic
      description: 'Provider server-to-server credentials `keyId:keySecret`. Server-to-server only, also gated by the

        provider''s server IP allow-list. Never placed in a browser/mobile client.

        '
    clientToken:
      type: http
      scheme: bearer
      bearerFormat: JWT
      description: 'Short-lived, per-request JWT (`ES256`) minted at request creation, scoped

        `{tenant, requestId, purpose, method, allowedOrigins}`. Safe to hand to a browser/mobile client:

        it cannot create requests, read tenant data, or touch other requests. For browser clients the API

        enforces `Origin` against `allowedOrigins` (rejects cross-origin replay).

        '
    downloadToken:
      type: apiKey
      in: query
      name: downloadToken
      description: One-off token returned with a completed sign result, for fetching the signed document.
externalDocs:
  description: Quickstart, SDKs, test data, pricing and lifecycle policy
  url: https://atk.tvarka.pro/docs/
x-refined-from:
- tvarka-atk-api-auth-openapi.yaml
- tvarka-atk-api-openapi-original.json