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mcp/harbor
Cursor

EffectFence for Cursor

io.github.aurumflux20/effectfence

Stops agents double-firing side effects: 1,000 racing duplicates, exactly one execution.

client:Cursor transport:stdio runtime:npm

Install EffectFence in Cursor

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

{
  "mcpServers": {
    "effectfence": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "effectfence"
      ]
    }
  }
}

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

EffectFence in other clients

EffectFence MCP server