The local internet for AI coding agents.
Build, test, and replay third-party API integrations locally without touching production services, leaking real keys, sending real messages, or charging real cards.
Safe API loops for agents
Production APIs are the wrong place to test autonomous integration code.
npx @yiaany/ghostapi start --open
npx @yiaany/ghostapi mcp
npx @yiaany/ghostapi setup --write
local API world is live
Local Proxy
Give agents a safe local target instead of production APIs.
Provider-Shaped Responses
Return realistic success and failure payloads that look like the providers your app already uses.
MCP For Agents
Let agents inspect state, read logs, force responses, and toggle failure modes instead of guessing.
Scenarios And Chaos
Replay payment failures, rate limits, upstream errors, latency, and saved traffic from your own app.
Start GhostAPI locally
Run the proxy, point your app at localhost, then inspect, replay, and control API behavior from the dashboard or MCP.
Test integrations locally
without unsafe API calls.
Cursor writes a Stripe integration. GhostAPI catches the request, returns a realistic payment failure, and the agent fixes the code without ever touching production.
Built for AI coding agents, SaaS developers, and API-heavy teams