Footgun

Dated, verified fixes for how APIs and AI coding tools break, served to your agent before it codes.

使うべきか

品質と安全性

A
説明の品質
100%
スキーマの完全性
80%
命名の品質
90%
ポイズニングのリスク
100%
権限の一致
100%
プロトコルへの準拠
100%

ツール定義とプロトコルへの準拠に関する自動分析に基づいています。

コンテキストコスト

~716トークン数(ツール定義)
~1.2 KB一般的なレスポンスサイズ
注意への影響は中程度(128k コンテキストの 0.56%)

これは、サーバーのツールがモデルのコンテキストに読み込まれるたびに消費されるおおよそのトークン数です。数が多いほど、ほかのタスクに使える注意が減ります。

インストール

ワンクリックインストール

これを `claude_desktop_config.json` ファイルに追加してください:

{
  "mcpServers": {
    "footgun": {
      "url": "https://getfootgun.com/api/mcp"
    }
  }
}

リモートエンドポイント

https://getfootgun.com/api/mcpstreamable-http

できること

ツール一覧

ツール(4)

🟢 読み取り専用🟡 書き込み🔴 削除⚪ 不明
🟢lookup_traps(provider, surface, context, include_stale)

Call before writing code against a third-party API, platform, or AI tool. Returns verified, dated failure modes with fixes.

入力スキーマ

{
  "type": "object",
  "properties": {
    "provider": {
      "type": "string"
    },
    "surface": {
      "type": "string"
    },
    "context": {
      "type": "string"
    },
    "include_stale": {
      "type": "boolean"
    }
  },
  "required": [
    "provider"
  ],
  "$schema": "https://json-schema.org/draft/2020-12/schema"
}
🟢search_traps(error_text, provider, include_stale)

Call when a call to a third-party service fails. Paste the error text. Returns the closest verified traps with fixes.

入力スキーマ

{
  "type": "object",
  "properties": {
    "error_text": {
      "type": "string",
      "minLength": 4,
      "maxLength": 4000
    },
    "provider": {
      "type": "string"
    },
    "include_stale": {
      "type": "boolean"
    }
  },
  "required": [
    "error_text"
  ],
  "$schema": "https://json-schema.org/draft/2020-12/schema"
}
🟡file_trap(provider, surface_type, surface_name, title, symptoms, ...)

Draft a trap after a failure was fixed. Private by default with a Pro or Team key; public filings enter the review queue. A public trap is reviewed by a person before it is published; citing the provider's official documentation or changelog in sources helps. Needs an API key. Set visibility to public to submit to the public registry.

入力スキーマ

{
  "type": "object",
  "properties": {
    "provider": {
      "type": "string",
      "maxLength": 64
    },
    "surface_type": {
      "type": "string",
      "enum": [
        "api",
        "sdk",
        "ui",
        "billing",
        "infra",
        "tool"
      ]
    },
    "surface_name": {
      "type": "string",
      "maxLength": 200
    },
    "title": {
      "type": "string",
      "minLength": 10,
      "maxLength": 140
    },
    "symptoms": {
      "minItems": 1,
      "maxItems": 6,
      "type": "array",
      "items": {
        "type": "string",
        "maxLength": 300
      }
    },
    "cause": {
      "type": "string",
      "maxLength": 1000
    },
    "fix": {
      "type": "string",
      "maxLength": 2000
    },
    "apply": {
      "type": "string",
      "maxLength": 4000
    },
    "affected": {
      "type": "string",
      "maxLength": 300
    },
    "sources": {
      "default": [],
      "maxItems": 8,
      "type": "array",
      "items": {
        "type": "string",
        "maxLength": 500
      }
    },
    "tags": {
      "maxItems": 6,
      "type": "array",
      "items": {
        "type": "string",
        "maxLength": 40
      }
    },
    "visibility": {
      "type": "string",
      "enum": [
        "private",
        "public"
      ]
    }
  },
  "required": [
    "provider",
    "surface_type",
    "surface_name",
    "title",
    "symptoms",
    "cause",
    "fix",
    "apply",
    "affected"
  ],
  "$schema": "https://json-schema.org/draft/2020-12/schema"
}
⚪confirm_trap(trap_id, still_true, hours_lost, version_seen)

Record that a trap is still true (or not), with optional hours lost and version seen. Needs an API key.

入力スキーマ

{
  "type": "object",
  "properties": {
    "trap_id": {
      "type": "string"
    },
    "still_true": {
      "type": "boolean"
    },
    "hours_lost": {
      "type": "number"
    },
    "version_seen": {
      "type": "string"
    }
  },
  "required": [
    "trap_id",
    "still_true"
  ],
  "$schema": "https://json-schema.org/draft/2020-12/schema"
}

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