@auctra/mcp-gateway

Stage 0 MCP gateway adapter. Wrap MCP tool calls with Auctra Authority Gate (action.execute) before execution.

import { Auctra } from "@auctra/sdk";
import { gateMcpToolCall, withAuctraGate } from "@auctra/mcp-gateway";

const client = new Auctra({ apiKey: process.env.AUCTRA_API_KEY! });

await gateMcpToolCall({
  client,
  agentId: "agent-uuid",
  toolName: "send_email",
  args: { to: "[email protected]" },
});

const sendEmail = withAuctraGate({
  client,
  agentId: "agent-uuid",
  toolName: "send_email",
  execute: async (args) => mailer.send(args),
});

Blocked or approval-required tool calls throw McpToolBlockedError with the decision evidence hash when present.

Stdio MCP server

Run the package as a real MCP stdio server:

AUCTRA_API_KEY=... AUCTRA_AGENT_ID=agent-uuid npx auctra-mcp-gateway

Exposed tools:

• gate_tool_call
• verify_audit_chain