API Error Decoder: A Tool for Making Sense of HTTP Errors If you’ve ever stared at a 422 Unprocessable Entity with a vague JSON response, you know how frustrating debugging API errors can be. You’re not alone. That’s why I built API Error Decoder — a simple, no-login tool that helps developers interpret and resolve HTTP error responses faster. You paste an error — whether it’s a status code, response body, or full cURL command — and the tool breaks it down: what the status means, common causes, and actionable steps to fix it. It supports all standard HTTP status codes and includes context-aware suggestions based on the response structure. For example, if you’re getting a 400 with a nested validation error, it’ll highlight which field failed and why. It’s not magic — just practical guidance pulled from real debugging patterns. I built it after spending too many hours parsing unclear API docs and error messages myself. The tool is free to use for basic decoding. No account needed.…