How to Use the Error Decoder
Paste your error message in the textarea. Select the language (Python, JavaScript, TypeScript, SQL, Java, React, CSS, Bash, or Other). Get root cause, code fix, and prevention tip instantly from AI.
Error Decoder Formula
AI-powered: sends error + language to /api/explain with developer-focused system promptExample Calculation
Pasting: "TypeError: Cannot read property 'map' of undefined"
AI identifies: array is undefined when map is called
Fix: add optional chaining: arr?.map() or check if array exists before calling map
Frequently Asked Questions
Which languages are supported?
Python, JavaScript, TypeScript, SQL, Java, React, CSS, Bash, and Other (for any language not listed). The AI is instructed to give language-specific fixes with code snippets.