Signet + MCP Servers

Step 1: Register your MCP server

Register your MCP server as a Signet agent to establish its trust identity. Connecting agents can then verify your server before sharing data.

Step 2: Add trust verification middleware

Implement middleware that checks connecting agents' Signet Scores before granting tool access.

Step 3: Expose trust as a resource

Add a Signet trust lookup resource to your MCP server so connected agents can check trust scores through the MCP protocol.

Step 4: Report tool usage outcomes

Track tool usage success and failure rates through Signet transaction reports.

// MCP server with Signet trust gate
server.setRequestHandler(CallToolRequestSchema, async (request) => {
  const agentSid = request.params.meta?.signetSid;
  if (agentSid) {
    const score = await fetch(`https://api.agentsignet.com/score/${agentSid}/public`);
    const data = await score.json();
    if (data.composite_score < 600) {
      return { content: [{ type: "text", text: "Trust score too low for this tool" }] };
    }
  }
  // Proceed with tool execution
  return executeTool(request.params);
});