Run untrusted code safely.
One API call.
Cinch executes untrusted, AI-generated code in secure, throwaway sandboxes — and returns just the result. Your infrastructure is never touched.
Three lines. Zero risk.
Your AI writes code. You hand it to Cinch. We run it in a sealed box and destroy it. You get the result.
Send the code
POST any snippet to the API — or use the Python / JS SDK. It doesn't matter if a human or an AI wrote it.
We isolate it
Code runs inside a gVisor sandbox with no network, no filesystem, and hard memory and CPU limits.
Get the result
stdout, stderr, exit code — returned in milliseconds. The sandbox is destroyed instantly.
See it run.
This is all it takes. Install the SDK, pass your key, and call run(). Hit the button to see the shape of a response.
from pangolin import Sandbox
box = Sandbox(api_key="your-key")
result = box.run("print(2 + 2)")
print(result.stdout)Sealed isolation
gVisor kernel-level sandboxing. Fork bombs, infinite loops, and exfil attempts stay contained.
Disposable
Every run is a fresh, amnesiac box. Nothing persists, nothing leaks.
Python & JavaScript
First-class SDKs on PyPI and npm. Integrate in under ten minutes.
Transparent pricing
Pay per compute-second. A generous free tier. No surprises.
Built for code you didn’t write.
From AI agents running LLM-generated code to graders, playgrounds, and data backends — anywhere untrusted code needs to run.
AI agents & LLM tools
Your model writes code. Cinch runs it — sealed and disposable.
Code playgrounds
Run user snippets live in your docs, courses, or product.
Automated grading
Execute and test student submissions safely, at scale.
Data analysis as a service
Run customer-supplied transforms without touching your infra.
Technical interviews
Power real code execution in coding assessments.
No-code custom logic
Let non-devs add real code steps to your platform.
Cinch Builders
Building something real? We’ll fund the compute.
A program for devs shipping serious products on Cinch. Apply with what you’re building — if it’s real, you get:
- Up to $1,000 in compute credits — as much as 10,000 sandbox-hours, free, on approval.
- 30% off compute, permanently — $0.07/hr instead of $0.10/hr on everything you buy.
- A direct line to the founder — your feedback shapes the roadmap.
Reviewed personally. Side projects welcome — it just has to be real.
No account needed to apply. Not ready to apply yet? Grab a free account ($1 of compute) and come back anytime.
After you apply, we’ll take you to create your account (optional) — that way, if you’re accepted, your credits land instantly.
After you apply we’ll take you to create your account — optional, but if you’re accepted your credits land instantly.
Ship AI code execution today.
Grab an API key and run your first sandbox in minutes.