node-red-contrib-matrix-chat

Matrix chat server client for Node-RED

Currently in beta. Please report any issues in our repository to help us reach a stable, well-tested release. Breaking changes may occur before our first stable release, so be sure to check the changelog before updating.

Join our public Matrix room for help: #node-red-contrib-matrix-chat:skylar.tech

Features

Supported functionality in this package includes:

• End-to-end encryption (E2EE)
  • Work in progress
  • Alternative: Use Pantalaimon for E2EE key synchronization across sessions
• Receive events from rooms: Messages, reactions, images, audio, locations, files, encrypted or unencrypted
• Fetch/modify room state: Update room settings
• Paginate room history
• Send files (encryption support for files coming soon)
• Send/edit messages (supports plain text and HTML formats)
• Send typing notifications
• Delete events (messages, reactions, etc.)
• Decrypt files in E2EE rooms
• React to messages
• Admin tools:
  • Register users on closed Synapse servers (registration_shared_secret)
  • Manage users, including listing, adding, editing, deactivating (Synapse API)
  • Force-add users to rooms
• Room management: Invite, kick, ban, join, create, and leave rooms

These features allow you to easily build bots, set up chat relays, or even administrate your Matrix server directly from Node-RED.

Installing

Install through Node-RED's UI by searching for node-red-contrib-matrix-chat, or use the following command inside your Node-RED directory:

npm install node-red-contrib-matrix-chat

Usage

Explore our examples to see the module in action.

Extending functionality

You're not limited to just the nodes we've created. Enable global access in your Matrix Client to directly interact with the client from function nodes and create custom logic.

View an example here.

End-to-End Encryption Notes

• This module doesn't handle encryption key synchronization between devices. It’s recommended to use the bot exclusively in Node-RED to prevent issues with E2EE messages.
• Storage: Keys for E2EE are saved in a folder called matrix-client-storage within your Node-RED directory. Back up this folder regularly! If lost, you won’t be able to decrypt messages from E2EE rooms.
• To move your bot to a different installation, migrate this folder and ensure the old and new clients don't run simultaneously.

Interested in helping? Contributions to finalize E2EE support are welcome!

Registering a User

This module includes a node to register users using the Synapse secret registration endpoint. It returns both an access_token and a device_id, perfect for setting up the bot.

Guide on registering a user via the web browser

Guide on registering using shared secret registration (for server owners)

Other Packages

• node-red-contrib-gamedig - Query game servers from Node-RED.

Contributing

We welcome all contributions! Please submit a pull request if you add a feature so the whole community can benefit.

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