Falcon Shield

Pre-sign Solana tx guard for agents: ALLOW/WARN/BLOCK verdict, x402 USDC pay-per-call.

使うべきか

説明の品質

100%

スキーマの完全性

100%

命名の品質

80%

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

~515トークン数（ツール定義）

~5.1 KB一般的なレスポンスサイズ

注意への影響は最小限（128k コンテキストの 0.40%）

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": {
    "falcon-shield": {
      "url": "https://falcon-shield.falcon-sol.workers.dev/mcp"
    }
  }
}

リモートエンドポイント

https://falcon-shield.falcon-sol.workers.dev/mcpstreamable-http

できること

ツール一覧

Use this before an agent or wallet signs a Solana transaction. Decodes the unsigned or signed transaction and returns NO_MATCH (no known-bad pattern matched; not a safety guarantee), WARN, or BLOCK, with plain-language reasons and a signed receipt. Pass an x402 quote to also check a payment transaction against it (overpay, approve-instead-of-transfer, unchecked Transfer, wrong payee). Errors return ERROR and are never charged. Price $0.009 USDC (x402, Solana).

入力スキーマ

{
  "type": "object",
  "properties": {
    "tx": {
      "type": "string",
      "description": "Base64 wire transaction (also accepts an RPC getTransaction result)."
    },
    "wallet": {
      "type": "string",
      "description": "Your own pubkey; only this key is treated as 'you'."
    },
    "known_addresses": {
      "type": "array",
      "items": {
        "type": "string"
      },
      "maxItems": 200,
      "description": "Optional: pubkeys you have recently paid or received from. A recipient that only looks like one of these (same first/last characters) is flagged as address poisoning."
    },
    "quote": {
      "type": "object",
      "description": "x402 quote the tx pays: {asset, amount, pay_to | pay_to_token_account, decimals?, token_program?}."
    },
    "cap_base_units": {
      "type": "integer",
      "description": "Hard per-payment cap enforced even if the quote asks for more."
    },
    "caps": {
      "type": "object",
      "description": "Optional spend caps you declare; any violation returns BLOCK. Keys: max_amount (int base units per outflow), max_amounts ({mint|'SOL': int}), max_total (int per asset), allowed_payees ([pubkey]; owners' ATAs match), allowed_assets ([mint|'SOL']), allow_approvals (bool, default false)."
    },
    "simulate": {
      "type": "boolean",
      "description": "Simulate against Solana mainnet (Helius RPC, sigVerify off, recent blockhash replaced, never submitted). Default true; false = static checks only. If simulation fails the verdict is at least WARN, except plain System/Token/ATA/ComputeBudget/Memo transactions with no unresolved lookup tables, which are fully decoded statically. Third-party unlimited approvals BLOCK by default. Response includes risk_score (0-100), basis (simulated|static) and top_reason."
    },
    "strict": {
      "type": "boolean",
      "description": "Escalate HIGH-risk token approvals (unlimited or third-party delegate) from WARN to BLOCK. Default false."
    }
  },
  "required": [
    "tx"
  ]
}

コミュニティ

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エビデンス

Falcon Shield

品質と安全性

コンテキストコスト

ワンクリックインストール

リモートエンドポイント

ツール一覧

ツール（1）

入力スキーマ

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