New codebase?
Get the senior’s tour.
Paste a repo. In ten minutes you’ll know what it is, how it’s shaped, how a request flows, and exactly where to start.
The walkthrough
Six chapters, paced like a real onboarding
Not a chatbot you have to interrogate. A guided tour with a live map beside it.
Chapter 1
What is this?
The one-sentence mental model, from the README and the manifests.
Chapter 2
The shape
The 3–7 pieces that hold it up, drawn like a whiteboard.
Chapter 3
Follow the request
One real path, traced from the entry point inward, file by file.
Chapter 4
Load-bearing walls
The files everything else leans on — and their blast radius.
Chapter 5
Danger zones
Cycles, god files and hotspots, flagged before you trip on them.
Chapter 6
Where you touch
Your first files, picked for what you came to do.
At every step
Ask your senior anything
Stuck on a step? Ask. Answers are grounded in the real code graph and a search of the actual source — and every file mentioned lights up on the map.
Try it on a repoWhy it works
Built on the code, not on vibes
Your code stays put
Parsed in your browser with tree-sitter. Nothing is uploaded.
A map that listens
Every file the guide names lights up on the stage beside it.
Checkpoints
Quick questions after each big idea, like a good senior would ask.
Grounded, not guessed
Built on the real import graph — no invented files or functions.
FAQ
Questions
What does it actually read?
Every source file, parsed with tree-sitter into a graph of files, symbols, imports and calls — plus the README and package manifests. It all happens in your browser tab.
Is my code sent anywhere?
Indexing never leaves your machine. When the live guide narrates or answers a question, it receives the graph summary and the few code lines relevant to that question — not your repository.
Which languages work?
TypeScript, JavaScript, Python, Go, Rust, Java, Kotlin, C#, C/C++, PHP, Ruby, Swift, Dart and more — 37 grammars in total.
Private repositories?
Open the folder from your disk instead of pasting a URL. Chrome and Edge support opening local folders directly.
How long does it take?
Indexing takes seconds for most repos. The walkthrough is about ten minutes, and you can jump between chapters any time.
Your first day, minus the first week.
Paste a repo and start the tour. It’s free, and nothing leaves your browser.