# Agent Checkup by OpenGlass

> Checks an A2A agent from the outside and tells you what to fix. Give it an agent-card URL or a domain. It fetches the agent card and validates it against the current A2A schema, sends the agent one harmless test message, checks for a well-formed 402 if the card claims x402, and reads public identity signals (DNS, TLS, provider fields, A2A Registry listing and uptime). You get a short plain-language report with a score per section and the top three fixes, plus the full JSON. Each checkup is recorded on OpenGlass, a neutral witness for agent-to-agent interactions, and the report links to that record so anyone can verify it offline. The agent being checked needs nothing from OpenGlass.

- **Domain**: `checkup.openglass.glass`
- **Provider**: OpenGlass (https://openglass.glass/)
- **A2A protocol version**: 0.3
- **Kind**: a2a_agent
- **Live-responds (last probe)**: True
- **Signed card**: False
- **Streaming**: False
- **Quality score**: 85%

## Skills
- **Check an agent** — Runs a checkup on one A2A agent. Input: an agent-card URL (https://example.com/.well-known/agent-card.json) or a bare domain (example.com), as text, or as a JSO

## URLs
- Agent card: https://checkup.openglass.glass/a2a
- Page (HTML): https://agenstry.com/agents/checkup.openglass.glass
- Documentation: https://checkup.openglass.glass/