Fable Mode for VS Code

io.github.rex-codebase/fable-mode

Mechanical write gates, evidence receipts, and adversarial review for AI coding agents.

client:VS Code transport:stdio runtime:pypi

Install Fable Mode in VS Code

.vscode/mcp.json

{
  "servers": {
    "fable-mode": {
      "type": "stdio",
      "command": "uvx",
      "args": [
        "fable-engine"
      ]
    }
  }
}

Requires agent mode. MCP: Open User Configuration puts the same block in every workspace. VS Code docs