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Agent Verifier

by packet.guru · remote · no sign-in to list tools · v1.0.0 · published by guru.packet

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

Changes · 1
CompareRegistry entry

1 tool: 1 change things.

Scanned Oct 21, 2026

No check matched anything in the tool definitions. No finding is not a safety guarantee. How the checks work.

claude mcp add --transport http agent-verifier https://fp.packet.guru/api/v1/mcp

Tools

Open a tool for its reasons and full description. Descriptions are the publisher's own words, shown as they are.

1 tool

Changes things 1Claude Code: ask
  • self_check_web_bot_authReports 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 faul…No findings

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.
    • The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
    Description, as the server wrote it
    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.

    Annotations the server declares

    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: false

This is not a safety rating, and no finding is not a safety guarantee. The groups and findings come from fixed checks of the tool definitions the server returned on the date shown, not from its code or what it does when called. How the checks work.

Install

Pinned to version 1.0.0. Values in angle brackets are yours to fill in.

claude mcp add --transport http agent-verifier https://fp.packet.guru/api/v1/mcp

Run in a terminal.

Claude Code permissions

Allow the reads, ask before a change, deny the deletes. Paste into .claude/settings.json.

.claude/settings.json
{
  "permissions": {
    "allow": [],
    "ask": [
      "mcp__agent-verifier__self_check_web_bot_auth"
    ],
    "deny": []
  }
}

Tools that only read are allowed, tools that change things ask first, tools that delete or cancel are denied. It assumes the server is installed as agent-verifier. Review it before you use it.