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Agent Verifier MCP Server

answering

Agent Verifier is answering right now. Last checked 8 min ago. It exposes 1 tools.

Test and debug your AI agent's Web Bot Auth (RFC 9421) signature: is it valid, and what to fix?

Uptime history 32 days of history · worst day 97%
32 days agonow
100.0%
Uptime 24h
91 of 91 checks
1
Tools
read from the server
248 ms
Response time
average over 24h
open, no key
Access
streamable-http

Nothing serious here today

Today is the operative word: we check Agent Verifier every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.

Three servers free · no card

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 8 min ago.

run in your terminal
claude mcp add agent-verifier --transport http https://fp.packet.guru/api/v1/mcp
Settings → Connectors → Add custom connector, then paste this address
https://fp.packet.guru/api/v1/mcp
~/.codex/config.toml
[mcp_servers.agent-verifier]
url = "https://fp.packet.guru/api/v1/mcp"
.cursor/mcp.json
{
  "mcpServers": {
    "agent-verifier": {
      "url": "https://fp.packet.guru/api/v1/mcp"
    }
  }
}
.vscode/mcp.json
{
  "servers": {
    "agent-verifier": {
      "type": "http",
      "url": "https://fp.packet.guru/api/v1/mcp"
    }
  }
}

Available tools 1

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

self
self_check_web_bot_auth
Reports how the request carrying this call looks from the outside: whether its Web Bot Auth (RFC 9421) signature verified, what the key directory it named publishes, the exact fault if there is one and the sentence saying what to change, plus plain facts about the address it arrived from. Sign the call the way you sign requests to anyone else. Free, anonymous, no account. Takes no arguments: an unsigned call still gets an answer about its address.

Endpoints

URLTransportStateLatencyChecked
https://fp.packet.guru/api/v1/mcp streamable-http answering 225 ms 8 min ago

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Agent Verifier — questions

Answers built from our own checks of this server.

What can Agent Verifier do?
It exposes 1 tools, read directly from the server on our last check. Among them: self_check_web_bot_auth. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →
Is Agent Verifier working right now?
We send a real MCP handshake every 15 minutes. Over the last 24 hours 91 of 91 checks got a reply (100.0%), average response time 248 ms. The bar chart above shows every period we have measured.
How do I connect Agent Verifier?
Copy the ready config from this page. We generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each in the form that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.
Does Agent Verifier need an API key?
No. Agent Verifier completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 1 of them are readable on this page. This is what we observed, not what the docs claim.
How fast is Agent Verifier?
It answers our handshake in 248 ms on average, which is faster than 57% of all working MCP servers we measure. The comparison comes from our own checks across the whole registry, every 15 minutes.