Hermes MCP Server: Install & Setup

Install Hermes in Claude Code

Claude Code

claude mcp add --transport http hermes https://hermes.southlondonscientific.com/mcp

mcp.json (Claude Desktop, Cursor, VS Code, Windsurf)

{
  "mcpServers": {
    "hermes": {
      "url": "https://hermes.southlondonscientific.com/mcp"
    }
  }
}

Frequently asked questions

What does the Hermes MCP server do?

UK air quality MCP: live readings, historical trends, LAQM stats, WHO checks, knowledge base.

Is the Hermes MCP server free?

The server is free, but you will likely need an account. The server itself is free, but it connects to a service that needs an account or API key, which may have paid tiers. Check the provider for current pricing.

Does Hermes run locally or remotely?

Remote. Hosted by the provider. You connect with a URL, nothing to install.

How do I add Hermes to Claude Code?

Run: claude mcp add --transport http hermes https://hermes.southlondonscientific.com/mcp

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