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: Polybrain MCP Server

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 and receive a JWT token in the response.

• login_user - Authenticate a user with email and password and receive a JWT token in the response.

• search_users - Search or list all users except the authenticated user; requires JWT Bearer token from login or registration (user-login auth, not a static API key).

• access_chat - Create or fetch a one-to-one chat with another user; requires JWT Bearer token from login or registration.

• fetch_chats - Fetch all chats for the authenticated user sorted by most recently updated; requires JWT Bearer token from login or registration.

• create_group_chat - Create a new group chat; requires JWT Bearer token. The users field must be a JSON-stringified array of user ObjectId strings, not a native JSON array.

• rename_group_chat - Rename an existing group chat; requires JWT Bearer token from login or registration.

• remove_from_group - Remove a user from a group chat; requires JWT Bearer token from login or registration.

• add_to_group - Add a user to a group chat; requires JWT Bearer token from login or registration.

• get_chat_messages - Retrieve all messages for a chat; requires JWT Bearer token from login or registration.

• send_message - Send a new message in a chat and update the chat latestMessage; requires JWT Bearer token from login or registration.