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Cathedral — Persistent Memory for AI Agents

Persistent memory and drift detection for AI agents across session restarts.

Python Remote

★ 11 stars Last pushed 2026-06-13 License: MIT

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Connect

Review any command before running it. Package names and URLs come from the server's own registry entry.

Remote (streamable-http)

https://cathedral-ai.com/mcp Requires auth (checked 2026-11-09)

Claude Code:

claude mcp add --transport http cathedral https://cathedral-ai.com/mcp --header "Authorization: <YOUR_VALUE>"

Or add to your MCP client config:

{
  "mcpServers": {
    "cathedral": {
      "url": "https://cathedral-ai.com/mcp",
      "headers": {
        "Authorization": "<YOUR_VALUE>"
      }
    }
  }
}

Authorization secret

Package (pypi 1.1.0)

uvx cathedral-mcp

Or add to your MCP client config:

{
  "mcpServers": {
    "cathedral": {
      "command": "uvx",
      "args": [
        "cathedral-mcp"
      ],
      "env": {
        "CATHEDRAL_API_KEY": "<YOUR_VALUE>"
      }
    }
  }
}

CATHEDRAL_API_KEY required secret — Your Cathedral API key from cathedral-ai.com
CATHEDRAL_BASE_URL — Cathedral API base URL (for self-hosted instances)
CATHEDRAL_SANITISE — Set to 1 to enable prompt injection filtering on memory content