mern_chat_app MCP server

Generated from https://github.com/yogsgehlot/Mern-Chat-App (commit 21caed2360bb39358ee031eb29e521a1a1ae1c90).

Setup

1. pip install -e . (or pip install -r requirements.txt if provided separately).

2. Copy .env.example to .env and fill in the values below, or have your deployment platform inject them as environment variables directly - nothing here contains real credentials.

3. Run: python server.py

Related MCP server: MCP CRUD Tools

Required environment variables

Transport

Two transports, selected via MCP_TRANSPORT:

• stdio (default) - the standard subprocess transport most MCP hosts use.

• streamable-http - hosts this server over HTTP/HTTPS at /mcp, so it can run as a standalone network service. Configure with:

  • HOST (default 0.0.0.0), PORT (default 8000)

  • MCP_TLS_CERTFILE / MCP_TLS_KEYFILE - set both to serve HTTPS directly; otherwise plain HTTP is served (fine behind a TLS-terminating proxy/ingress).

  Example: MCP_TRANSPORT=streamable-http PORT=8000 python server.py

Tools

• register_user - Register a new user account (name, email, password, optional profile picture URL) and receive a JWT auth token.

• login_user - Authenticate an existing user with email and password and receive a JWT auth token.

• search_users - Get or search all users (by name/email keyword), excluding the currently authenticated user.

• access_chat - Create a new one-to-one chat with another user by userId, or return the existing chat between them.

• fetch_chats - Fetch all one-to-one and group chats that the authenticated user belongs to, sorted by most recently updated.

• create_group_chat - Create a new group chat given a group name and a JSON-encoded array of at least 2 member user IDs (the requester is added automatically).

• rename_group - Rename an existing group chat.

• remove_from_group - Remove a user from a group chat by chatId and userId. Note: the controller has no server-side admin check despite the doc comment.

• add_to_group - Add a user to a group chat by chatId and userId.

• get_messages - Fetch all messages belonging to a given chat, with sender and chat populated.

• send_message - Send a new message to a chat, updating that chat's latestMessage.