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mcp/harbor
Cursor

plugin for Cursor

ai.circulara/plugin

Circulara Observe MCP plugin - meters your AI agents' token spend and carbon, free tier.

client:Cursor transport:stdio runtime:npm

Install plugin in Cursor

~/.cursor/mcp.json · windows: %USERPROFILE%\.cursor\mcp.json

Held in this page only — never stored, logged, or sent anywhere but back to your screen. 

{
  "mcpServers": {
    "plugin": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@circulara/plugin"
      ],
      "env": {
        "CIRCULARA_BACKEND_URL": "<CIRCULARA_BACKEND_URL>",
        "CIRCULARA_TENANT_ID": "<CIRCULARA_TENANT_ID>",
        "CIRCULARA_TOKEN": "<CIRCULARA_TOKEN>",
        "CIRCULARA_SEAT_ID": "<CIRCULARA_SEAT_ID>",
        "CIRCULARA_USER_ID": "<CIRCULARA_USER_ID>"
      }
    }
  }
}

Use .cursor/mcp.json in a project root instead to scope it to that project. Cursor merges both. Cursor docs

plugin in other clients

plugin MCP server