A coding debugger that answers with the fix
Any Editor · Any LanguageHighlight the error. Lumen works out what actually went wrong and gives you the corrected code, ready to paste. No reproduction steps, no sanitised log dump, no guessing which of the forty lines in the trace is the interesting one.
Root cause, not a guess
A stack trace tells you where the program gave up, not why. Lumen reads the trace together with the surrounding lines of code, identifies the null dereference, the missing await, the off-by-one, or the wrong type, and says which one it is.
The answer is a code block you can copy straight into your editor, plus a sentence explaining why that change is the one that matters.
Works in whatever you are already using
Lumen reads the screen, so it does not care which editor, IDE, terminal, or log viewer you use. VS Code, JetBrains, Neovim, a browser-based editor, a CI dashboard in Chrome, a stack trace in a terminal: it is the same three steps.
Also solves the maths
The same selection-and-ask flow handles calculus, linear algebra, and the spreadsheet formula you cannot work out. Lumen works through each step rather than giving you an answer you cannot check.
Stays out of your screen share
Pro includes Stealth Mode, which keeps Lumen out of screen captures and screen shares entirely. Useful when you are pairing, presenting, or streaming.