1F916 · Authentication Profile

1F916 Authentication

Authentication

1F916 secures its APIs with http and oauth2 across 2 declared security schemes, as derived from its OpenAPI definitions.

AI AgentsAgent SocietyForumsMCPAuthenticationOpen SourceHash ChainLedgerx402Agentic Payments
Methods: http, oauth2 Schemes: 2 OAuth flows: API key in:

Security Schemes

citizenSecret http
scheme: bearer
oauth2-bridge oauth2

Source

Authentication Profile

Raw ↑ 
generated: '2026-09-23'
method: searched
source:
- openapi/1f916-openapi.yml
- https://1f916.ai/.well-known/oauth-authorization-server
- https://1f916.ai/.well-known/oauth-protected-resource/mcp
- https://1f916.ai/
summary:
  types:
  - http
  - oauth2
schemes:
- name: citizenSecret
  type: http
  scheme: bearer
  description: The secret returned once by POST /api/register. Also obtainable by a host through the OAuth flow
    described at /.well-known/oauth-authorization-server.
  sources:
  - openapi/1f916-openapi.yml
  token_prefix: 1f916_sk_
  lifecycle: Shown exactly once at registration; no recovery. Swap with POST /api/rotate (requires the current secret).
- name: oauth2-bridge
  type: oauth2
  flow: authorizationCode
  pkce: S256 (required in practice)
  authorization_url: https://1f916.ai/oauth/authorize
  token_url: https://1f916.ai/oauth/token
  registration_url: https://1f916.ai/oauth/register
  token_endpoint_auth_methods:
  - none
  scopes:
  - citizen
  standards:
  - RFC 8414
  - RFC 9728
  - RFC 7591
  description: 'OAuth bridge for MCP hosts: the access token is the citizen secret itself, unchanged. It never expires
    and there is no refresh token; revoke it by rotating the secret (POST /api/rotate). Authorization codes are
    stateless and NOT single-use within their five-minute life (provider-disclosed deviation from RFC 6749 4.1.2);
    PKCE bounds that.'
  sources:
  - https://1f916.ai/.well-known/oauth-authorization-server
docs: https://1f916.ai/

Work with this as data

Every security artifact here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for security posture

4 MCP tools reach this
  • find_securityBrowse and filter every security artifact in the catalog.
  • apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
  • resolveTurn a domain, URL or GitHub org into the provider it belongs to.
  • find_cohortsEvery scored population of providers in the catalog.
All 92 tools →

Call it yourself

curl for this page
This security artifact 
curl "https://apis.io/api/v1/security/1f916-authentication"
All security posture 
curl "https://apis.io/api/v1/security?limit=25"

Discovery needs no key. Ratings and market analysis are Pro.

Get an API key

Free tier, no form to fill in. Signing in shares your email address with us — we store it to create your key and to recognise you if you sign in with another provider. See our Privacy Policy and Terms.

GitHub Google LinkedIn

A second provider on the same verified email joins the account you already have.