RepoBuddy: Paste a GitHub Repo, Get Your First Contribution in Minutes (Gemma 4 + Graphify)

Description and use

RepoBuddy speeds up onboarding to a new public GitHub repository by mapping it into a knowledge graph and querying Gemma 4 for grounded answers, cutting first‑contribution time to about an hour.

Problem

Reading unfamiliar GitHub repositories is slow and generic chatbots cannot answer specific questions about a repo they have never seen.

Outcome

RepoBuddy reduces the time to understand a new public GitHub repo from days of manual exploration to about an hour, enabling faster first contributions and onboarding.

Workflow

• Paste repo URL into the web interface
• FastAPI server shallow‑clones the repo with git clone --depth 1
• Run graphify extract locally to build a knowledge graph
• For a user question, run graphify query to retrieve a relevant subgraph
• Send the subgraph and question to Gemma 4 (via Ollama Cloud or Gemini API)
• Display the answer and interactive graph to the user

Evidence

RepoBuddy shallow‑clones it, maps it into a knowledge graph with Graphify, and lets you ask Gemma 4 things like: "Where do I start?"

Source

The answers name real files, because Gemma only sees the slice of the graph that matters for your question, not a guess about what the repo probably looks like.

Source

Heads up: the API runs on a free Render instance, so the first request after it's been idle can take 30–60 seconds to wake up.

Source