generated: '2026-09-03'
method: searched
source: >-
  https://www.wealthreader.com/docs/en/iframe-integration-2-of-2-backend.md ;
  https://www.wealthreader.com/docs/en/oauth-integration-backend.md ;
  openapi/wealth-reader-api-for-ai.yaml ; live response headers from https://api.wealthreader.com/entities/
docs: https://www.wealthreader.com/docs/en/oauth-integration-backend/
summary: >-
  Two-layer auth. The CLIENT authenticates to Wealth Reader with a static api_key. The END USER
  authenticates to their own bank inside Wealth Reader's widget or OAuth flow, and the result of
  that is a reusable `token` that Wealth Reader custodies on the client's behalf. The OpenAPI
  declares NO securitySchemes at all — the api_key travels as an ordinary form field — so nothing
  in the machine-readable contract tells a client generator that these calls are authenticated.
spec_declares_security: false
schemes:
- id: api_key
  type: apiKey
  in: formData
  name: api_key
  transport: application/x-www-form-urlencoded request body
  applies_to: every operation except GET /entities/ and GET /error-codes/ (public catalogue reads)
  note: >-
    Also accepted as a query parameter on GET /cards/transactions/, where the spec itself warns
    "it travels in the query string, so it ends up in access logs and intermediary proxies".
    api.wealthreader.com advertises X-API-KEY in Access-Control-Allow-Headers, so a header form
    exists at the edge, but the published operations use the form field.
  obtained_from: signup plus an onboarding session with the technical team
- id: bank_token
  type: custodied_credential
  name: token
  applies_to: 'POST /entities/, POST /tokens/revoke/, POST /tokens/reasign/'
  description: >-
    Opaque handle to the end user's custodied bank credential, returned in statistics.token the
    first time credentials are tokenized. Reusable for later refreshes; invalidated when the user
    changes their password or the bank raises a new second factor, which surfaces as error code 3
    (blocked token) or 4 (temporarily invalid).
  lifecycle:
    issue: tokenize=1 on the widget or the domain registration
    revoke: 'POST /tokens/revoke/ (operationId revokeToken)'
    reassign: 'POST /tokens/reasign/ (operationId reasignToken) — moves a token between api_keys'
    list: 'POST /tokens/ (operationId queryTokensByApiKey), 500 per page'
- id: oauth_pkce
  type: oauth2-like
  authorization_endpoint: https://oauth.wealthreader.com/oauth2/
  token_endpoint: https://oauth.wealthreader.com/token/
  grant: authorization_code with PKCE (S256)
  scopes: []
  note: >-
    Shaped like OAuth 2.0 + PKCE — response_type=code, code_challenge_method=S256, state, nonce,
    redirect_uri, and a code exchanged at /token/ — but it is NOT standards-discoverable and it is
    not the standard flow. There is no /.well-known/oauth-authorization-server (probed 404 on both
    hosts) and no /.well-known/openid-configuration. No scopes are defined. Parameter names differ
    from RFC 7636: the challenge is sent as `challenge_code`, not `code_challenge`. The docs
    require the verifier to be a 41-character alphanumeric string hex-encoded to 82 characters, and
    `wr_conf` (the selector configuration JSON) is hex-encoded into the query string. Used when the
    integrator cannot embed the iframe — native apps and redirect flows.
- id: webhook_signature
  type: hmac
  header: X-WR-Signature
  algorithm: 'sha256=<hex of hmac_sha256(raw_body, webhook_secret)>'
  applies_to: real-time cards webhook deliveries
  secret_issuance: >-
    64 hex characters, returned exactly once by POST /cards/webhook/ on first setup or when
    rotate_secret is true; otherwise it comes back null and cannot be retrieved again.
  verification: >-
    The provider explicitly instructs consumers to compare in constant time (hash_equals or
    equivalent) before trusting the body.
- id: allwr_api_key
  type: apiKey
  product: ALL WR (allwr.io) — sibling platform, not the bank-aggregation API
  key_prefix: wrk_
  scope: 'tasks:import'
  env: ALLWR_TOOLKIT_ALLWR_API_KEY
  source: https://raw.githubusercontent.com/Wealth-Reader/allwr-toolkit/main/docs/authentication.md
  note: >-
    The only scoped credential anywhere in the company's published surface. Created under
    Settings -> API keys in an ALL WR workspace. Recorded because it is the only place the
    provider documents a named permission scope.
callback_auth:
  mechanism: none
  detail: >-
    The iframe callback POST to the integrator's own HTTPS endpoint carries no signature and no
    shared secret — only the operation_id the integrator generated. Authenticity rests on the
    integrator having registered that domain and callback URL in the client area beforehand, and
    on the operation_id being unguessable. The integrator must answer HTTP 200 with
    {"status":"ok"} or the widget will not report success to the frontend. Contrast with the cards
    webhook, which IS HMAC-signed.
gaps:
- The OpenAPI declares no securitySchemes, so generated clients get no auth wiring.
- No OAuth discovery document; no scopes; non-standard PKCE parameter names.
- The iframe callback is unsigned.
- No /.well-known/openid-configuration or /.well-known/oauth-authorization-server (both 404).