A tutor that reads your code and teaches you to think
Every feature in CodeMine exists for one reason: to get you from "I copied this from a tutorial" to "I built this myself."
AI code review
Paste or write code and get feedback on correctness, edge cases, readability, and performance — with the reasoning behind each note.
Socratic mentor
Your mentor asks guiding questions and offers hints, never a copy-paste answer. You learn by solving, not by pasting.
Adaptive exercises
Challenges generated around your gaps, so practice always targets the concept you're about to master next.
Feedback you'd normally pay a senior engineer for
Each review is structured like a real pull-request review: what works, what's risky, and what a professional would do differently — all in language that matches your level.
- Bug and edge-case detection with clear reproductions
- Big-O and performance notes in plain English
- Style and naming suggestions that build good habits
1. Handles empty input safely.
2.
list membership is O(n) — a set would be faster.3. Consider renaming
d to duplicates.A real coding environment, zero setup
Write and run code directly in your browser. No installs, no dependency hell, no "it works on my machine." Every attempt is instantly testable and reviewable.
- Sandboxed execution for Python, JavaScript, SQL & more
- Instant test results on every submission
- Save, revisit, and share your solutions
Pick a track and start building
Structured roadmaps that take you from fundamentals to portfolio-ready projects.
Python
Scripting, automation, data, and back-end fundamentals.
Web Development
HTML, CSS, JavaScript, and modern front-end frameworks.
Data & SQL
Queries, analysis, and the data skills every team needs.
Interview Prep
Algorithms, data structures, and mock interview practice.
Private by design
See it in action
The fastest way to understand CodeMine is to try it. Start free and get your first code review in under two minutes.