First-Call Witness

Real MCP handshake witness graded per-client, signed expiring receipt.

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描述质量

87%

模式完整度

63%

命名质量

87%

投毒风险

100%

权限匹配度

100%

协议合规性

100%

基于对工具定义和协议合规性的自动分析。

~132token 数（工具定义）

~191 B典型响应大小

对注意力的影响极小（占 128k 上下文窗口的 0.10%）

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

将以下内容添加到你的 `claude_desktop_config.json` 文件中：

{
  "mcpServers": {
    "first-call-latency-witness": {
      "url": "https://textforagents.com/products/first-call-latency-witness/mcp"
    }
  }
}

远程端点

https://textforagents.com/products/first-call-latency-witness/mcpstreamable-http

它能做什么

Get the versioned budget table

{
  "type": "object",
  "properties": {}
}

Witness check — paid work is refused over MCP; payments collect on the HTTP x402 surface (POST /check)

{
  "type": "object",
  "properties": {
    "url": {
      "type": "string"
    }
  },
  "required": [
    "url"
  ]
}

Verify a signed receipt envelope

{
  "type": "object",
  "properties": {
    "receipt": {
      "type": "object"
    }
  },
  "required": [
    "receipt"
  ]
}

社区

证据