com.textforagents/first-call-latency-witness

up checked 2026-11-12T08:38:55.944Z

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Publisher-provided title

First-Call Witness

Publisher-provided description

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

Summary by lookupd

Checks an MCP server's handshake and issues signed, expiring receipts for verification; paid checks are handled over HTTP, not MCP.

Install

Claude Code, remote (streamable-http)

claude mcp add --transport http first-call-latency-witness https://textforagents.com/products/first-call-latency-witness/mcp

Codex, remote (streamable-http)

codex mcp add first-call-latency-witness --url https://textforagents.com/products/first-call-latency-witness/mcp

Cursor, remote (streamable-http) → .cursor/mcp.json

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

Other clients: docs. Or tell your agent: Set up lookupd for me: read https://lookupd.com/agent.md and follow it.

Tools (3 tools)

Publisher-provided text

• budgets Get the versioned budget table
• witness_check Witness check — paid work is refused over MCP; payments collect on the HTTP x402 surface (POST /check)
• verify_receipt Verify a signed receipt envelope

Details

• Version: 1.1.5
• Transports: streamable-http
• Uptime (7 days): 100%
• Median latency: 179 ms
• First indexed: 2026-11-01T08:59:11.405Z
• Last seen in registry: 2026-11-09T00:17:17.188Z

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