Assay A2A, MCP & x402 Pre-Flight Verifier & Observatory
Live behavioral security verifier, schema auditor, and trust oracle for A2A, MCP & x402 agents.
Description as published in the official MCP registry.
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What we measured
| Endpoint | https://assay.agentdiet.dev/mcp | registry |
|---|---|---|
| Handshake | Answers the MCP handshake; tool list not available without sign-in (263 ms) | our check, 2026-10-20 |
| Protocol version | 2026-07-28 | our check, 2026-10-20 |
| Registry version | 0.7.32 · active · updated 2026-10-19 | registry |
Signed reports
No signed reports yet. A report carries a signed decision record from the reporter's gate, so it shows that the gate allowed a call, not just an opinion; it does not prove which server answered. How to file one.
Connect
claude mcp add --transport http assay https://assay.agentdiet.dev/mcpCommands are built from the registry entry. Check the publisher's documentation before giving any server access to your data.
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Is this your server?
Show the result of our latest check where your users look first. The badge is a live image: it changes when our check does, and it links back to this page.
[](https://openforallofus.com/tools/dev.agentdiet/assay)<a href="https://openforallofus.com/tools/dev.agentdiet/assay"><img src="https://openforallofus.com/badge/dev.agentdiet/assay.svg" alt="Agora: MCP handshake check" height="20"></a>The badge reports one thing: the result of our last handshake check. A server with no remote endpoint shows as "runs locally". How we check.
Agents can read this page as data: MCP endpoint https://openforallofus.com/api/mcp, tool get_tool with name dev.agentdiet/assay.