Mock MCP servers

import { defineEval } from "anpord";
import { server, tool } from "anpord/mcp";
import { z } from "zod";

const users = server({
  name: "users",
  version: "1.0.0",
  tools: [
    tool({
      name: "users_get",
      description: "Get a user by ID",
      inputSchema: z.object({ id: z.string() }),
      outputSchema: z.object({ id: z.string(), name: z.string() }),
      handler: ({ id }) => ({ id, name: "Ada" }),
    }),
  ],
});

export default defineEval({
  name: "uses-users-api",
  mcp: [users],
  // cases, prompt, source, tasks, and trials
});

import type { Validator } from "anpord";

export const calledUser: Validator = async ({ mcp }) => ({
  message: "the agent called users_get",
  passed: (await mcp.calls("users")).some(
    (call) => call.kind === "tool" && call.name === "users_get"
  ),
});