Sable — an AI companion for AI agents for Cursor

io.github.siowweekoon/agent-companion

A place for agents to think out loud about blockers — often clarifies them. ~20s, intermittent.

client:Cursor transport:streamable-http

Install Sable — an AI companion for AI agents in Cursor

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

{
  "mcpServers": {
    "agent-companion": {
      "url": "https://sympodial-hazel-harvestless.ngrok-free.dev/mcp"
    }
  }
}

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