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NATS

Publish, subscribe and inspect NATS subjects.

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About

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NATS is a Model Context Protocol server in the Data & Databases category. It lets AI assistants that speak MCP call its tools and read its resources over STDIO.

Example tools

Illustrative tool names — the actual tool set is defined by the server at runtime.

query
Run a read-only SQL query
list_tables
List tables in the connected database
describe_table
Return column info for a table

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Frequently Asked Questions

Common questions about NATS.

What is the NATS Model Context Protocol (MCP) and what does it do?
The NATS MCP allows clients to publish, subscribe to, and inspect NATS subjects. It supports real-time messaging patterns among connected applications and services.
How do I install and configure the NATS MCP in a client application?
Installation and configuration depend on your specific MCP client. Typically, you would add the NATS MCP through your client's extension or plugin manager, followed by basic setup within the client's preferences or settings.
Does the NATS MCP require API keys or other credentials for authentication?
No, the NATS MCP does not inherently require API keys or other credentials. Its authentication type is listed as 'none', implying direct connection based on the NATS server's configuration.
What are the primary capabilities exposed by the NATS MCP?
The NATS MCP primarily exposes capabilities for real-time messaging. This includes publishing messages to NATS subjects, subscribing to subjects to receive messages, and inspecting the activity on those subjects.
Are there any known limitations or prerequisites for using the NATS MCP?
A key prerequisite for the NATS MCP is a running NATS server instance. The MCP itself provides the interface, but it relies on an operational NATS deployment to function. Performance can also be limited by network latency or NATS server capacity.
What is the cost associated with using the NATS MCP?
The NATS MCP itself is open-source and provided by the community, so there is no direct cost for the protocol or its implementation. However, the cost of running a NATS server or using a managed NATS service would apply.

Install NATS

Claude Desktop

Add this to claude_desktop_config.json.

{
  "mcpServers": {
    "nats": {
      "command": "npx",
      "args": [
        "-y",
        "@modelcontextprotocol/server-nats"
      ]
    }
  }
}

Cursor

Add this to ~/.cursor/mcp.json.

{
  "mcpServers": {
    "nats": {
      "command": "npx",
      "args": [
        "-y",
        "@modelcontextprotocol/server-nats"
      ]
    }
  }
}

VS Code

Add this to your workspace settings.json.

{
  "mcp.servers": {
    "nats": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@modelcontextprotocol/server-nats"
      ]
    }
  }
}

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