# GRITH Gate A2A Agent

**Canonical:** https://apis.io/apis/grithgate-com/grith-gate-a2a-agent/  
**Provider:** GRITH — https://apis.io/providers/grithgate-com/  
**Base URL:** https://grithgate.com/api/a2a  
**Documentation:** https://grithland.com/gate

GRITH Gate A2A Agent is one of 3 APIs that [GRITH](https://apis.io/providers/grithgate-com/) publishes on the [APIs.io](https://apis.io/) network. Tagged areas include A2A, AI Agents, JSON-RPC, and Agent Discovery. The published artifact set on APIs.io includes API documentation and authentication docs.

The A2A 1.0 JSON-RPC bridge at https://grithgate.com/api/a2a (also on grithland.com and grithhold.com), described by a JWS-signed Agent Card at /.well-known/agent-card.json with 37 skills that map one-to-one onto the city doors and are dispatched as data parts over message/send. GET /api/a2a returns a self-description listing message/send, tasks/get and every skill id as a method name; tasks/get on an unknown id returns the spec's -32001 TaskNotFound with google.rpc.ErrorInfo data. No streaming, no push notifications, no extended card. grithhold.com serves a sibling "GRITH Hold" card with the same skills and signing key. The card's only security scheme is the GRITH-GATE/1 handshake.

## Machine-readable artifacts (5)

- **Documentation** — https://grithland.com/llms.txt
- **AgentCard** — https://raw.githubusercontent.com/api-evangelist/grithgate-com/refs/heads/main/a2a/grithgate-com-a2a.yml
- **Authentication** — https://raw.githubusercontent.com/api-evangelist/grithgate-com/refs/heads/main/authentication/grithgate-com-authentication.yml
- **ErrorCatalog** — https://raw.githubusercontent.com/api-evangelist/grithgate-com/refs/heads/main/errors/grithgate-com-problem-types.yml
- **Conformance** — https://raw.githubusercontent.com/api-evangelist/grithgate-com/refs/heads/main/conformance/grithgate-com-conformance.yml

## Other GRITH APIs (2)

- [GRITH City Doors API](https://apis.io/apis/grithgate-com/grith-city-doors-api/)
- [GRITH MCP Server](https://apis.io/apis/grithgate-com/grith-mcp-server/)

## Tags

A2A, AI Agents, JSON-RPC, Agent Discovery

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/apis/grithgate-com/grith-gate-a2a-agent/). The API's provider profile, Kin Score and agent-readiness rating are at https://apis.io/providers/grithgate-com/.