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Trigger events, query channels, and manage realtime messaging on Pusher Channels.
About
Trigger events, query channels, and manage realtime messaging on Pusher Channels.
Security Report
Valid MCP server (10 strong, 10 medium validity signals). No known CVEs in dependencies. Package registry verified. Imported from the Official MCP Registry.
12 files analyzed · 1 issue found
Security scores are indicators to help you make informed decisions, not guarantees. Always review permissions before connecting any MCP server.
Permissions Required
This plugin requests these system permissions. Most are normal for its category.
What You'll Need
Set these up before or after installing:
Environment variable: PUSHER_APP_ID
Environment variable: PUSHER_KEY
Environment variable: PUSHER_SECRET
Environment variable: PUSHER_CLUSTER
How to Install
Add this to your MCP configuration file:
{
"mcpServers": {
"io-github-crashbytes-pusher-mcp-server": {
"env": {
"PUSHER_KEY": "your-pusher-key-here",
"PUSHER_APP_ID": "your-pusher-app-id-here",
"PUSHER_SECRET": "your-pusher-secret-here",
"PUSHER_CLUSTER": "your-pusher-cluster-here"
},
"args": [
"-y",
"@crashbytes/pusher-mcp-server"
],
"command": "npx"
}
}
}Documentation
View on GitHubFrom the project's GitHub README.
Pusher Channels MCP Server
An MCP (Model Context Protocol) server that gives AI agents the ability to send realtime messages, query channels, and manage users through Pusher Channels.
Tools
| Tool | Description |
|---|---|
trigger_event | Send an event to one or more channels |
trigger_batch_events | Send up to 10 events in a single API call |
list_channels | List active channels with optional prefix filter |
get_channel_info | Get subscription/user count for a channel |
get_presence_users | List users connected to a presence channel |
authorize_channel | Generate auth tokens for private/presence channels |
terminate_user_connections | Disconnect all connections for a user |
Prerequisites
- Node.js 18 or later
- A Pusher Channels account (free tier available)
Installation
npm install -g @crashbytes/pusher-mcp-server
Or clone and build from source:
git clone https://github.com/CrashBytes/pusher-mcp-server.git
cd pusher-mcp-server
npm install
npm run build
Configuration
You need four environment variables from your Pusher dashboard:
| Variable | Description |
|---|---|
PUSHER_APP_ID | Your Pusher app ID |
PUSHER_KEY | Your Pusher app key |
PUSHER_SECRET | Your Pusher app secret |
PUSHER_CLUSTER | Your Pusher cluster (e.g. us2, eu, ap1) |
Usage with Claude Desktop
Add the following to your Claude Desktop config file:
macOS: ~/Library/Application Support/Claude/claude_desktop_config.json
Windows: %APPDATA%\Claude\claude_desktop_config.json
{
"mcpServers": {
"pusher": {
"command": "node",
"args": ["/path/to/pusher-mcp-server/build/index.js"],
"env": {
"PUSHER_APP_ID": "your_app_id",
"PUSHER_KEY": "your_app_key",
"PUSHER_SECRET": "your_app_secret",
"PUSHER_CLUSTER": "us2"
}
}
}
}
If installed globally via npm:
{
"mcpServers": {
"pusher": {
"command": "pusher-mcp-server",
"env": {
"PUSHER_APP_ID": "your_app_id",
"PUSHER_KEY": "your_app_key",
"PUSHER_SECRET": "your_app_secret",
"PUSHER_CLUSTER": "us2"
}
}
}
}
Usage with Claude Code
claude mcp add pusher -- node /path/to/pusher-mcp-server/build/index.js
Set the environment variables in your shell before running, or configure them in your Claude Code MCP settings.
Example Prompts
Once configured, you can ask Claude things like:
- "Send a 'deploy-complete' event to the notifications channel with the message 'v2.1.0 deployed'"
- "Show me all active presence channels"
- "How many users are on the presence-lobby channel?"
- "Disconnect user abc123 from all channels"
Development
npm install
npm run dev # Run with tsx (hot reload)
npm run build # Compile TypeScript
npm run type-check # Check types without emitting
Tutorial
For a step-by-step guide on building this server from scratch, see the full tutorial on CrashBytes.
License
MIT
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