Graptor is the open source graph engine that understand your complex codebases. so you can build, debug, and ship faster.

Install via npm

Get started instantly with a single command.

View on GitHub

Explore the source, contribute, or fork your own version.

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Why Graptor?

Dharma, a senior engineer at Meta Read full blog on Greptile
I have to touch cross-language repos. One part of the code will be in PHP, and another in Python or C++, and switching between each and seeing how they interact makes it harder to finish the features.
Modern codebases are too large and dynamic to understand manually. Tools like Cursor use LLMs to help but they all need one key thing A structured understanding of your codebase. Graptor is an open source engine that gives you just that. It reads your entire project and extracts a semantic code graph. For Example:
  • Function declarations
  • Who calls who
Graptor gives you clean, structured JSON that represents your entire codebase as a semantic graph. A machine readable graph that you can feed into whatever you want.

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What Can You Build With It?

  • Query your code: “Where is this function used?”
  • Visualize dependencies across your repo
  • Embed graph in a vector database + run LLM agents
  • Build your own Greptile/Cursor-like tool, powered by real structure
Grapho is the missing link between static code and intelligent dev tools.

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Supported Languages

Graptor currently supports JavaScript, TypeScript, JSX, and TSX out of the box. We’re actively working on adding support for all major languages

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Learn More

How Graptor works

Understand How Graptor works internally.