Sparrow Authentication

generated: '2026-08-28'
method: probed
source: https://login.trysparrow.com/.well-known/openid-configuration
docs: https://sparrow.com/security/
note: >-
  Sparrow publishes no developer API and no API-key or OAuth programme for third parties. What IS
  anonymously published is the authentication surface of Sparrow's own web application: an OpenID
  Connect provider on Sparrow's custom domain login.trysparrow.com (an Auth0 tenant — the app's CSP
  names trysparrow-samlidp.us.auth0.com as a permitted frame source, and Sparrow's security page
  documents SAML SSO for enterprise customers). This profile is derived entirely from the
  anonymously-served discovery document; it describes how humans and Sparrow's own SPA sign in, NOT
  a partner-facing authorization server. No client registration is open to the public.
surface: end-user and customer application sign-in
issuer: https://login.trysparrow.com/
provider: Auth0 (custom domain on trysparrow.com)
schemes:
- name: sparrow_oidc
  type: openIdConnect
  openIdConnectUrl: https://login.trysparrow.com/.well-known/openid-configuration
  endpoints:
    authorization: https://login.trysparrow.com/authorize
    token: https://login.trysparrow.com/oauth/token
    userinfo: https://login.trysparrow.com/userinfo
    jwks: https://login.trysparrow.com/.well-known/jwks.json
    revocation: https://login.trysparrow.com/oauth/revoke
    device_authorization: https://login.trysparrow.com/oauth/device/code
    backchannel_authentication: https://login.trysparrow.com/bc-authorize
    dynamic_registration: https://login.trysparrow.com/oidc/register
  grant_types:
  - authorization_code
  - client_credentials
  - refresh_token
  - password
  - implicit
  - urn:ietf:params:oauth:grant-type:device_code
  - urn:ietf:params:oauth:grant-type:token-exchange
  - urn:ietf:params:oauth:grant-type:jwt-bearer
  response_types:
  - code
  - token
  - id_token
  - code id_token
  token_endpoint_auth_methods:
  - client_secret_basic
  - client_secret_post
  - private_key_jwt
  - none
  pkce:
    supported: true
    code_challenge_methods:
    - S256
    - plain
  dpop:
    supported: true
    signing_alg_values:
    - ES256
  id_token_signing_algs:
  - HS256
  - RS256
  - PS256
  mfa:
    supported: true
    challenge_endpoint: https://login.trysparrow.com/mfa/challenge
    grant_types:
    - http://auth0.com/oauth/grant-type/mfa-oob
    - http://auth0.com/oauth/grant-type/mfa-otp
    - http://auth0.com/oauth/grant-type/mfa-recovery-code
  backchannel_logout:
    supported: true
    session_supported: true
  federation:
    saml: true
    note: >-
      SAML SSO is offered to enterprise customers via trysparrow-samlidp.us.auth0.com (named in the
      app.trysparrow.com Content-Security-Policy) and referenced on the Sparrow security page.
api_key_auth:
  published: false
  note: No public API key programme, developer portal, or key-issuance flow is published.
evidence:
- url: https://login.trysparrow.com/.well-known/openid-configuration
  status: 200
- url: https://login.trysparrow.com/.well-known/jwks.json
  status: 200
- url: https://api.trysparrow.com/.well-known/oauth-protected-resource
  status: 404