🩺 Paste the error. Get the cure.
Stack traces, cryptic exceptions, silent failures — paste the error and the code, get the root cause, the exact fix, and how to never see it again.
✓ Free forever✓ No signup✓ AI brain + local proof
AI-generated — always review before shipping to production. Your input is sent to the AI service only to generate the answer. The 85 classic utilities on this site run 100% in your browser.
How it works
- Paste the error: Drop in the full error message or stack trace — the more complete it is, the better the diagnosis.
- Add the surrounding code: Optionally include the code that produced the error and select the language so the fix matches your stack.
- Get the cure: The instrument explains the root cause in plain language and returns corrected code you can apply.
Good to know
- AI-generated fixes are suggestions, not guarantees — run your test suite after applying any change.
- Strip secrets, tokens, and personal data from stack traces before pasting them anywhere online.