# Keycard API

**Canonical:** https://apis.io/apis/keycard/keycard-api/  
**Provider:** Keycard — https://apis.io/providers/keycard/  
**Base URL:** https://api.anthropic.com  
**Documentation:** https://docs.keycard.ai/guides/mcp-server.md

Keycard API is one of 2 APIs that [Keycard](https://apis.io/providers/keycard/) publishes on the [APIs.io](https://apis.io/) network, described by a machine-readable OpenAPI specification. This API exposes 6 JSON Schema definitions. The published artifact set on APIs.io includes an OpenAPI specification and 6 JSON Schemas.

Keycard API as documented publicly: 15 operations. Contract generated from the documentation by API Evangelist (2026-10-24); not the provider's own document.

## Operations (15)

| Method | Path | Summary |
|---|---|---|
| GET | `/` | GET / |
| GET | `/.well-known/jwks.json` | Cloudflare Workers |
| GET | `/.well-known/oauth-authorization-server` | Cloudflare Workers |
| GET | `/.well-known/oauth-protected-resource` | GET /.well-known/oauth-protected-resource |
| GET | `/a2a/jsonrpc` | The agent exposes an A2A JSON-RPC endpoint at /a2a/jsonrpc |
| POST | `/a2a/jsonrpc` | POST /a2a/jsonrpc |
| GET | `/api/data` | GET /api/data |
| GET | `/health` | Protect MCP servers and APIs |
| POST | `/oauth/token` | POST /oauth/token |
| GET | `/user` | GET /user |
| GET | `/user/repos` | GET /user/repos |
| GET | `/v1` | GET /v1 |
| POST | `/v1/messages` | POST /v1/messages |
| POST | `/v1/oauth/token` | POST /v1/oauth/token |
| POST | `/v1/responses` | POST /v1/responses |

## Machine-readable artifacts (7)

- **OpenAPI** — https://artifacts.apis.io/keycard/openapi/_ae-authored/keycard-openapi-generated.yml
- **JSONSchema** — https://artifacts.apis.io/keycard/json-schema/keycard-post-a2-ajsonrpc-request-schema.json
- **JSONSchema** — https://artifacts.apis.io/keycard/json-schema/keycard-post-v1-messages-request-schema.json
- **JSONSchema** — https://artifacts.apis.io/keycard/json-schema/keycard-get-v1-response-schema.json
- **JSONSchema** — https://artifacts.apis.io/keycard/json-schema/keycard-post-oauth-token-response-schema.json
- **JSONSchema** — https://artifacts.apis.io/keycard/json-schema/keycard-post-v1-responses-request-schema.json
- **JSONSchema** — https://artifacts.apis.io/keycard/json-schema/keycard-post-v1-responses-response-schema.json

## Other Keycard APIs (1)

- [Keycard API](https://apis.io/apis/keycard/keycard-api-2/)

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/apis/keycard/keycard-api/). The API's provider profile, Kin Score and agent-readiness rating are at https://apis.io/providers/keycard/.