NoLag MCP Server

A hosted Model Context Protocol (MCP) server for NoLag. Connect Claude Desktop, Cursor, or any MCP-compatible client and let an AI agent manage your realtime infrastructure directly: create apps, rooms, and actors, publish messages, dispatch agent tasks, and manage access scopes, all through natural language.

• Homepage: https://nolag.app

• Full setup guide: https://nolag.app/docs/agents/mcp-setup

• Get an API key: https://portal.nolag.app (Settings → API Keys)

What is NoLag?

NoLag is realtime messaging infrastructure and the coordination layer for AI agents: pub/sub over WebSocket with presence, rooms, and quality-of-service delivery, high level SDKs for chat, notifications, and dashboards, and agent patterns to dispatch work, share state, observe decisions, and gate actions. SDKs for JavaScript, Go, and Python. This MCP server exposes a set of tools so an AI client can operate that infrastructure for you.

Related MCP server: Agent-Comm-Hub

Endpoints

The server is remote (hosted). It supports two transports:

• SSE: GET https://api.nolag.app/mcp/sse

• Streamable HTTP: POST https://api.nolag.app/mcp

Authentication uses a project-level API key (format nl_live_yourKeyId.yourSecret), created in the Portal.

Connect

Claude Desktop / Claude Code

Add this to your MCP configuration (claude_desktop_config.json, or .mcp.json in your project root for Claude Code):

{
  "mcpServers": {
    "nolag": {
      "command": "npx",
      "args": [
        "mcp-remote",
        "https://api.nolag.app/mcp/sse?token=nl_live_yourKeyId.yourSecret"
      ]
    }
  }
}

mcp-remote bridges the SSE transport to stdio and installs automatically via npx on first run. Replace the token with your API key.

Cursor

Add the same block to .cursor/mcp.json.

Custom HTTP client

curl -X POST https://api.nolag.app/mcp \
  -H "Authorization: Bearer nl_live_yourKeyId.yourSecret" \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","id":"1","method":"initialize","params":{}}'

Run it locally (stdio)

Prefer a local stdio server over the hosted endpoint? This repo ships a thin bridge that forwards to https://api.nolag.app/mcp. Listing tools needs no key; tool execution uses your key from NOLAG_API_KEY.

{
  "mcpServers": {
    "nolag": {
      "command": "npx",
      "args": ["-y", "@nolag/mcp"],
      "env": { "NOLAG_API_KEY": "nl_live_yourKeyId.yourSecret" }
    }
  }
}

Or with Docker:

docker build -t nolag-mcp .
docker run -i -e NOLAG_API_KEY=nl_live_yourKeyId.yourSecret nolag-mcp

Tools

The server exposes tools across NoLag's resources:

• Apps — create, list, update, and delete apps.

• Rooms — create, list, update, and delete rooms.

• Actors — create, list, update, and delete client identities and access tokens.

• Topics and messaging — publish messages to topics.

• Agents — dispatch tasks and coordinate multi-agent work.

• Access scopes — manage tenant isolation.

To verify your connection, ask your client to "list my NoLag apps" or "create an agent actor".

Links

• Docs: https://nolag.app/docs

• MCP setup guide: https://nolag.app/docs/agents/mcp-setup

• AI agents guide: https://nolag.app/docs/agents

• Portal: https://portal.nolag.app

License

MIT. See LICENSE.