ONCE — Exactly-Once Reliability for AI Agent Actions for Windsurf

io.github.gsterlingpress/once

Prevent duplicate AI-agent side effects with idempotency, verification, and durable receipts.

client:Windsurf transport:streamable-http

Install ONCE — Exactly-Once Reliability for AI Agent Actions in Windsurf

~/.codeium/windsurf/mcp_config.json · windows: %USERPROFILE%\.codeium\windsurf\mcp_config.json

{
  "mcpServers": {
    "once": {
      "serverUrl": "https://optimistic-compassion-production.up.railway.app/mcp"
    }
  }
}

Global only — Windsurf has no per-project MCP config. Refresh Cascade after saving. Windsurf docs