Gephyr

Gephyr turns your app's existing API into a secure connector for ChatGPT, Claude, Grok, Cursor and any agent that supports MCP. Your users sign in with the login they already have, then just ask, and their agent gets it done in your app. You choose what agents can do, risky actions ask the user first, and every call is logged. No code to write. Free to build and test; pay when you go live.