ratebook

Open database of US electricity tariffs, a deterministic rate engine, and an MCP server — so any app, device, or agent can answer: what will this kWh cost, and when should I charge?

{
  "mcpServers": {
    "ratebook": {
      "command": "uvx",
      "args": [
        "ratebook"
      ]
    }
  }
}

claude mcp add ratebook uvx ratebook

{
  "mcpServers": {
    "ratebook": {
      "command": "uvx",
      "args": [
        "ratebook"
      ]
    }
  }
}