Tools

import { MCPClient } from "@mcp-use/client";

const client = new MCPClient({
  mcpServers: { demo: { url: "http://localhost:3000/mcp" } },
});

try {
  const conn = await client.connect("demo");

  const tools = await conn.listTools();
  for (const tool of tools) {
    console.log(tool.name, tool.description);
  }

  const result = await conn.callTool("read_file", { path: "/tmp/a.txt" });

  if (result.isError) {
    console.error(result.content);
  } else {
    for (const block of result.content) {
      if (block.type === "text") console.log(block.text);
    }
  }
} finally {
  await client.close();
}

const abortController = new AbortController();

await conn.callTool(
  "long_task",
  { input: "data" },
  {
    timeout: 300_000,
    resetTimeoutOnProgress: true,
    maxTotalTimeout: 900_000,
    signal: abortController.signal,
  },
);

let conn = client.getSession("demo");
if (!conn) conn = await client.connect("demo");
await conn.callTool("echo", { message: "hello" });