Cosmos MCP Server

MCP server for the Polarity exocortex. Read and write your personal knowledge graph from any LLM client.

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What is the Cosmos MCP Server?

MCP server for the Polarity exocortex. Read and write your personal knowledge graph from any LLM client.

The short version

Every AI you use is building its own private graph of you. Claude has one. ChatGPT has one. Cursor has one. None of them talk to each other, and none of them are yours.

More MCP options

Compare MCP servers by category, or browse hosted MCP servers if you prefer an endpoint over a local process.

Maintainer setup documentation.

Recorded tools

Check the linked publisher documentation and your connected client's tool list. Names and availability can vary with the server version and account permissions.

ToolWhat it does
polarity_whoamiGET /api/polarity/whoami
polarity_exportPOST /api/polarity/export
polarity_get_graphGET /api/polarity
polarity_askPOST /api/polarity/ask
polarity_observePOST /api/polarity/observe
polarity_record_eventPOST /api/polarity/observe (kind=event)
polarity_record_preferencePOST /api/polarity/observe (kind=preference)
polarity_capture_turnPOST /api/polarity/capture-turn
polarity_dumpPOST /api/polarity/dump
polarity_checkinPOST /api/polarity/checkin
polarity_declarePOST /api/polarity/declare
iMessageLocal CLI: npx -y @polarity-lab/cosmos-mcp imessage sync. Mac only. Grant Terminal Full Disk Access first.

How to install the Cosmos MCP Server

{
  "mcpServers": {
    "cosmos": {
      "command": "npx",
      "args": [
        "-y",
        "@polarity-lab/cosmos-mcp"
      ]
    }
  }
}

From the project documentation. Replace placeholders and example paths before connecting.

Example prompts to try

  • “Use Cosmos to polarity whoami.”
  • “Use Cosmos to polarity export.”
  • “Use Cosmos to polarity get graph.”

Frequently asked questions

MCP server for the Polarity exocortex. Read and write your personal knowledge graph from any LLM client. Confirm the tools offered by your installed version in the connected client. Tool availability and permissions depend on the server and account configuration.