Cathedral — Persistent Memory for AI Agents

Cathedral — Persistent Memory for AI Agents is a remote (hosted) MCP server: Persistent memory and drift detection for AI agents across session restarts. Connect any MCP client to https://cathedral-ai.com/mcp.

Claude CodeCodexAntigravity

commandprompt

Terminal

claude mcp add --transport http cathedral-mcp https://cathedral-ai.com/mcp

Run in your project folder. Add --scope user to use it everywhere.

Open Settings → Connectors → Add custom connector, then paste https://cathedral-ai.com/mcp.

Add to .cursor/mcp.json or your client's MCP config.

{
  "mcpServers": {
    "cathedral-mcp": {
      "type": "http",
      "url": "https://cathedral-ai.com/mcp"
    }
  }
}

• Runtime: Nothing, it's hosted.
• MCP client: Claude Code, Codex, Antigravity, Claude Desktop, Cursor or any other client that speaks MCP over streamable HTTP.
• Environment variables: CATHEDRAL_API_KEY, CATHEDRAL_BASE_URL, CATHEDRAL_SANITISE