blackwall-x402-guardrail
Keyless hosted MCP: pre-signature x402 payment verdict (GO/HOLD/STOP) with a signed receipt.
我该使用它吗
质量与安全性
A
基于对工具定义和协议合规性的自动分析。
上下文开销
~247token 数（工具定义）
~1.9 KB典型响应大小
对注意力的影响极小（占 128k 上下文窗口的 0.19%）
这是每次将服务器的工具加载到模型上下文窗口时所消耗的大致 token 数。数值越高，可用于其他任务的注意力就越少。
安装
一键安装
将以下内容添加到你的 `claude_desktop_config.json` 文件中：
{
"mcpServers": {
"blackwall-x402-guardrail": {
"url": "https://mcp.blackwalltier.com"
}
}
}远程端点
https://mcp.blackwalltier.comstreamable-http它能做什么
工具清单
工具（1）
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⚪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.
输入模式
{
"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"
]
}社区
证据
最近观测
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