browser-pool-mcp

Instructions

Implementation Reference

• index.js:460-466 (registration)

  Registration of the 'browser_console_messages' tool. It uses `proxyToolCall` to delegate the execution.

  server.tool('browser_console_messages', 'Get console', {
    level: z.string().optional()
  }, async (args) => {
    const check = requireActivePage();
    if (check) return check;
    return proxyToolCall('browser_console_messages', args);
  });

• index.js:209-225 (handler)

  The proxyToolCall function acts as the handler implementation, delegating the tool call to the client instance.

  async function proxyToolCall(toolName, args) {
    log(`[proxyToolCall] ${toolName} with args: ${JSON.stringify(args)}`);
    const { client } = await getOrCreateInstance();
    log(`[proxyToolCall] got client for port ${assignedPort}`);
  
    // Update last used
    if (assignedPort && instances.has(assignedPort)) {
      instances.get(assignedPort).lastUsed = Date.now();
    }
  
    try {
      log(`[proxyToolCall] Calling client.callTool...`);
      const result = await client.callTool({ name: toolName, arguments: args || {} });
      log(`[proxyToolCall] Result type: ${typeof result}`);
      log(`[proxyToolCall] Result: ${JSON.stringify(result).slice(0, 500)}`);
  
      // The SDK returns { content: [...], isError?: boolean }