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blackwall-x402-guardrail

Keyless hosted MCP: pre-signature x402 payment verdict (GO/HOLD/STOP) with a signed receipt.

我該用這個嗎

品質與安全性

A
說明品質
100%
結構描述完整度
100%
命名品質
80%
汙染風險
100%
權限相符程度
100%
協定合規性
100%

根據工具定義與協定合規性的自動化分析。

上下文成本

~247Token（工具定義）
~1.9 KB典型回應大小
極小的注意力影響（128k 上下文的 0.19%）

這是每次將伺服器的工具載入模型上下文時所消耗的約略 token 數量。數量越高，可用於其他工作的注意力就越少。

安裝

一鍵安裝

將以下內容加入你的 `claude_desktop_config.json` 檔案：

{
  "mcpServers": {
    "blackwall-x402-guardrail": {
      "url": "https://mcp.blackwalltier.com"
    }
  }
}

遠端端點

https://mcp.blackwalltier.comstreamable-http

它能做什麼

工具清單

工具（1）

🟢 唯讀🟡 寫入🔴 刪除⚪ 未知
⚪forecast_payment(counterparty, amount, asset, chain, payer, ...)

Pre-signature x402 payment verdict: GO / HOLD / STOP for paying a counterparty, from settlement reputation, price-anomaly (quoted vs the payee's own median), and OFAC sanctions — with a third-party-verifiable Ed25519 signed receipt. Verdict only; never takes custody. Free under $10 at risk; over that, returns an x402 payment challenge.

輸入結構描述

{
  "type": "object",
  "properties": {
    "counterparty": {
      "type": "string",
      "description": "recipient wallet from the 402"
    },
    "amount": {
      "type": "string",
      "description": "amount as a decimal string, e.g. \"0.09\""
    },
    "asset": {
      "type": "string",
      "description": "e.g. USDC"
    },
    "chain": {
      "type": "string",
      "description": "e.g. base"
    },
    "payer": {
      "type": "string",
      "description": "agent's EVM wallet (optional; binds settlement)"
    },
    "resource": {
      "type": "string",
      "description": "what's being paid for"
    },
    "agent_id": {
      "type": "string",
      "description": "caller DID/identity"
    },
    "context": {
      "type": "object",
      "description": "{quoted_price_history, expected_recipient}"
    }
  },
  "required": [
    "counterparty",
    "amount",
    "asset",
    "chain"
  ]
}

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