Expo MCP Server

@mattlemmone

Repository

Basic information

About Expo MCP Server

WIP MCP server for expo apps.

Expo MCP Server config

No standard config provided

This server doesn't expose a parseable MCP config block in its README. See the repository for install instructions.

Repository

Expo MCP Server tools

Start Expo dev server (iOS by default)

Stop running Expo dev server

Show status and logs for Expo server

Retrieve recent Expo logs

Filtered logs with advanced options

Summary statistics of current logs

Clear all stored logs

Read contents of a file

Write content to a file

List files in a directory

List all tools registered in the server

Overview

What is Expo MCP Server?

Expo MCP Server is a Model Context Protocol server that provides development and debugging tools for Expo-based React Native applications. It integrates logging, process management, and file tooling to streamline automation and AI-based workflows.

How to use Expo MCP Server?

Install dependencies with npm install, build with npm run build, then start the server with npm start. For development use npm run dev and for testing with the MCP inspector use npm run inspect. The server exposes MCP tools such as expoStart, expoStop, expoLogs, readFile, and listFiles.

Key features of Expo MCP Server

Start, stop, and monitor Expo development servers
Capture and filter stdout/stderr logs
Read, write, and list files in the project directory
Query log statistics and clear logs
Extendable via custom MCP tools
Includes a packed single-file representation for AI processing (via Repomix)

Use cases of Expo MCP Server

AI-assisted debugging of Expo React Native applications
Automating Expo dev server lifecycle management
Collecting and analyzing server logs without manual inspection
Performing file operations within the project from an AI tool

Frequently asked questions

Does Expo MCP Server always kill the child Expo process on shutdown?

No. The server has a known issue where it does not always kill the child Expo process. It relies on global state to track process existence and should verify by PID instead.

How are logs stored and retrieved?

Logs are currently stored in-memory from child process events. The project notes that logs should ideally be queried from persisted log files for robustness.

What dependencies are required to run the server?

The README does not specify explicit external dependencies beyond Node.js and npm. An Expo installation is likely required for the Expo tools to function, but this is not stated.

What transport and authentication does the server use?

The server uses the Model Context Protocol standard. No authentication mechanism is described in the README.

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