GRITH

GRITH Gate A2A Agent

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.

GitHub

Documentation

📖
Documentation
https://grithland.com/llms.txt
📖
Authentication
https://raw.githubusercontent.com/api-evangelist/grithgate-com/refs/heads/main/authentication/grithgate-com-authentication.yml

Other Resources

🔗
AgentCard
https://raw.githubusercontent.com/api-evangelist/grithgate-com/refs/heads/main/a2a/grithgate-com-a2a.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

Work with this as data

Every API 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 apis

7 MCP tools reach this
  • find_apisBrowse and filter every API in the catalog.
  • get_api_artifactsOne API's artifacts, grouped by type.
  • get_openapiThe primary OpenAPI for this API.
  • find_similar_apisAPIs that look like this one.
  • 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 API 
curl "https://apis.io/api/v1/apis/grith-gate-a2a-agent"
All apis 
curl "https://apis.io/api/v1/apis?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.

API entry from apis.yml

apis.yml Raw ↑ 
aid: grithgate-com:grith-gate-a2a-agent
name: GRITH Gate A2A Agent
description: 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.
image: https://grithland.com/images/moth-gold.jpg
humanURL: https://grithland.com/gate
baseURL: https://grithgate.com/api/a2a
tags:
- A2A
- AI Agents
- JSON-RPC
- Agent Discovery
properties:
- type: Documentation
  url: https://grithland.com/llms.txt
- type: AgentCard
  url: a2a/grithgate-com-a2a.yml
- type: Authentication
  url: authentication/grithgate-com-authentication.yml
- type: ErrorCatalog
  url: errors/grithgate-com-problem-types.yml
- type: Conformance
  url: conformance/grithgate-com-conformance.yml
overlays: []