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Agent Failure Archive

by HanbeenMoon · remote · no sign-in to list tools · v0.3.1 · published by GitHub user HanbeenMoon

186 real AI agent post-mortems, 107 of them measurement failures. Free tools, paid via x402.

Deletes · 1Final · 1Changes · 6
CompareRegistry entry

9 tools: 1 can delete or cancel things, 1 do something that can't be undone, 6 change things and 1 only read.

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-failure-archive https://desktop-ai2ata5-1.tailfeb765.ts.net/mcp

Tools

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

9 tools

Deletes or cancels 1Claude Code: deny
  • archive$1.00.No findings

    Why it is in this group

    • The name "archive" says "archive": a word for removing or ending something.
    Description, as the server wrote it
    $1.00. Every case in one response. One payment, no subscription, no account.
Can't be undone 1Claude Code: ask
  • brief$0.05.No findings

    Why it is in this group

    • The description says "irreversible".
    Description, as the server wrote it
    $0.05. Pre-flight risk brief before an irreversible action, drawn from the ways that class of action actually failed.
Changes things 6Claude Code: ask
  • audit$0.02.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.
    Description, as the server wrote it
    $0.02. Full audit of a claim: why each tripped check matters, the incident behind it with measured numbers, and what to run.
  • catalogFree, no wallet.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.
    Description, as the server wrote it
    Free, no wallet. What the archive holds, what each paid tool costs, and how payment works.
  • contentsFree, no wallet.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.
    Description, as the server wrote it
    Free, no wallet. Every case title in the archive, tagged with the trap it illustrates. Titles only, no bodies. Read this to see what the paid archive actually contains before deciding it is worth a dollar.
  • precheckFree, no wallet.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.
    Description, as the server wrote it
    Free, no wallet. Check a conclusion against nine known ways of fooling yourself and get back which checks it trips plus the question each one asks. Use it before writing 'we found that'. The paid audit tool adds why each matters, the real incident with the numbers measured at the time, and what to run.
  • research$0.25.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.
    Description, as the server wrote it
    $0.25. The 107 measurement failures from an eight-month attempt to measure one person's individuation with embeddings.
  • sampleFree, no wallet.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.
    Description, as the server wrote it
    Free, no wallet. Two complete post-mortems from the archive.
Only reads 1Claude Code: allow

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 0.3.1. Values in angle brackets are yours to fill in.

claude mcp add --transport http agent-failure-archive https://desktop-ai2ata5-1.tailfeb765.ts.net/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": [
      "mcp__agent-failure-archive__search"
    ],
    "ask": [
      "mcp__agent-failure-archive__precheck",
      "mcp__agent-failure-archive__sample",
      "mcp__agent-failure-archive__catalog",
      "mcp__agent-failure-archive__contents",
      "mcp__agent-failure-archive__audit",
      "mcp__agent-failure-archive__brief",
      "mcp__agent-failure-archive__research"
    ],
    "deny": [
      "mcp__agent-failure-archive__archive"
    ]
  }
}

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-failure-archive. Review it before you use it.