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Cosmos Mcp

io.github.teampolarity/cosmos-mcp ยท v0.7.1

Personal knowledge graph every MCP client reads from and writes to. Portable across agents.

Connect Runs on your machine

Terminal
claude mcp add cosmos-mcp -e COSMOS_TOKEN=<COSMOS_TOKEN> -- npx -y @polarity-lab/[email protected]
claude_desktop_config.json
{
  "mcpServers": {
    "cosmos-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@polarity-lab/[email protected]"
      ],
      "env": {
        "COSMOS_TOKEN": "<COSMOS_TOKEN>"
      }
    }
  }
}
~/.cursor/mcp.json
{
  "mcpServers": {
    "cosmos-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@polarity-lab/[email protected]"
      ],
      "env": {
        "COSMOS_TOKEN": "<COSMOS_TOKEN>"
      }
    }
  }
}
.vscode/mcp.json
{
  "servers": {
    "cosmos-mcp": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@polarity-lab/[email protected]"
      ],
      "env": {
        "COSMOS_TOKEN": "<COSMOS_TOKEN>"
      }
    }
  }
}

Replace the values in angle brackets with your own. Keys stay on your machine; we never see them.

Tools

This server runs locally, so its tools are listed by your MCP client once it starts.

Environment variables

NameDescription
COSMOS_TOKEN
Optional, secret
pmk_ key from https://cosmos.polarity-lab.com/connectors. Optional on macOS once the system keychain is provisioned via `npx -y @polarity-lab/cosmos-mcp provision pmk_...`.

Details

Package@polarity-lab/[email protected] (NPM, stdio)
First published19 May 2026
Last updated19 May 2026
Registry nameio.github.teampolarity/cosmos-mcp

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