generated: '2026-08-09'
method: searched
source: https://atk.tvarka.pro/docs/quickstart/ + openapi/tvarka-atk-api-openapi-original.json
summary:
  types:
  - http
  - apiKey
  http_schemes:
  - basic
  - bearer
  api_key_in:
  - query
  oauth2_flows: []
  oauth2: false
  openid_connect: false
  model: layered - a long-lived provider secret on the backend, a short-lived request-scoped token on
    the device
schemes:
- name: 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.'
  sources:
  - openapi/tvarka-atk-api-auth-openapi.yaml
  - openapi/tvarka-atk-api-openapi-original.json
  - openapi/tvarka-atk-api-sign-openapi.yaml
- name: 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).'
  sources:
  - openapi/tvarka-atk-api-auth-openapi.yaml
  - openapi/tvarka-atk-api-openapi-original.json
  - openapi/tvarka-atk-api-sign-openapi.yaml
- name: downloadToken
  type: apiKey
  in: query
  parameter: downloadToken
  description: One-off token returned with a completed sign result, for fetching the signed document.
  sources:
  - openapi/tvarka-atk-api-openapi-original.json
  - openapi/tvarka-atk-api-sign-openapi.yaml
docs: https://atk.tvarka.pro/docs/quickstart/
model:
  server_to_server: HTTP Basic keyId:keySecret, additionally gated by the provider server IP allow-list.
    Document-level default security. Creates requests, polls, cancels, erases, downloads and calls the
    trust services. Never placed in a browser or mobile client.
  client: A per-request ES256 JWT (clientToken) minted at request creation and scoped {tenant, requestId,
    purpose, method, allowedOrigins}. It cannot create requests, read tenant data or touch another request.
    For browser clients the API enforces Origin against allowedOrigins and rejects cross-origin replay.
  download: A one-off downloadToken query parameter returned with a completed result.
  operation_token: 'Not a securityScheme, but a second single-use factor inside the ceremony: the operationToken
    returned with the data-to-be-signed must be presented on complete, and is spent on first use (409
    operation_token_spent).'
  unauthenticated: 'claimPairing (POST /pairing/claim) declares security: [] - possession of the short-lived
    one-claim pairing token is the credential. getJwks is also public.'
credential_issuance:
  url: https://atk.tvarka.pro/docs/access/
  process: Manual review; the credential-claim link is emailed but the secret itself is never emailed.
  environments:
  - sandbox
  - production
  note: The environment is a property of the issued credential, not a separate host or key prefix.
failure_codes:
- invalid_basic_credentials (401)
- invalid_client_token (401)
- client_token_expired (401)
- operation_token_expired (401)
- invalid_download_token (401)
- origin_not_allowed (403)
- ip_not_allowed (403)
- tenant_suspended (403)
- tier_forbidden (403)
- operation_token_spent (409)
verification:
  jwks: well-known/tvarka-atk-api-atk-jwks.json
  note: The optional identity assertion JWT is verifiable against the published JWKS (kid atk-1, ES256).