CommitAI — Local AI-Powered Git Assistant Using Gemma 4

Yuva Kunaal — Fri, 08 May 2026 20:56:09 +0000

This is a submission for the Gemma 4 Challenge: Build with Gemma 4

What I Built

As developers, we repeatedly write commit messages, maintain changelogs, and switch context during development. I wanted to build a lightweight developer tool that could automate this workflow completely offline without relying on cloud APIs or external AI services.

So I built CommitAI — a local AI-powered Git assistant using Gemma 4 + Ollama.

The workflow is simple:

Read staged Git diff
Send it to a local Gemma 4 model
Generate a clean Conventional Commit message
Update changelog automatically
Execute the Git commit

I also added Git hook integration so the workflow becomes:

git add .
git commit

and the AI handles the rest.

The project is built entirely in Python and runs locally on my MacBook Air M2 (8GB RAM).

Features

AI-generated Conventional Commit messages
Automatic changelog generation
Git hook integration
Fully local/offline workflow
Rich CLI interface using the Rich library
No external APIs
Privacy-friendly local inference
Uses staged Git diffs as context

Demo

Demo Video

Code

CommitAI Repo

How I Used Gemma 4

I used the gemma4:e2b model through Ollama for all AI-powered functionality inside CommitAI.

I specifically chose the E2B model because:

it runs efficiently on local hardware
lightweight enough for my MacBook Air M2 with 8GB RAM
low-latency responses for CLI workflows
strong enough reasoning for summarizing Git diffs
ideal for privacy-focused offline tooling

Gemma 4 powers:

commit message generation
changelog summarization
Git workflow automation

Architecture

Git Diff
   ↓
CommitAI
   ↓
Ollama API
   ↓
Gemma 4 (E2B)
   ↓
AI-generated commit/changelog
   ↓
Git commit execution

Tech Stack

Python
Ollama
Gemma 4 (gemma4:e2b)
Rich
Git Hooks

Future Improvements

PR description generation
Multi-model support
Better diff summarization
VSCode extension
Team changelog modes
Interactive commit editing

One of my biggest goals with this project was proving that useful AI developer tooling can run fully locally without depending on cloud APIs.

Thanks for reading 🚀

I built a free AI Flowchart Studio — just launched today! 🚀

Yuva Kunaal — Fri, 08 May 2026 18:27:40 +0000

Hey DEV community! 👋

Just launched AI Flowchart Studio today — a tool that converts
plain English into professional flowcharts using a Multi-Agent
Gemini AI pipeline.

The Problem

Existing tools like Lucidchart are too heavy for quick diagrams.
I wanted something where you just DESCRIBE and it builds.

How the AI Works (4-Stage Pipeline)

This is the part I'm most proud of:

Orchestrator Agent — Validates if the prompt can logically become a flowchart
Logic Parser Agent — Breaks text into a structured JSON graph (nodes + edges)
Generator Agent — Converts the graph into Mermaid.js syntax
Syntax Validator — Final check to guarantee perfect visual output

This pipeline ensures "Garbage In" never becomes "Garbage Out" 🎯

Tech Stack

Frontend: Vanilla JS, Mermaid.js, html2canvas, CSS3
Glassmorphism — deployed on Vercel

Backend: FastAPI (Python), Google GenAI SDK,
Server-Sent Events for real-time streaming — deployed on Render

Key Features

🤖 Multi-Agent AI generation
✏️ Manual builder (click & type, no coding)
🔄 Undo/Redo engine with memory buffer
📤 Export PNG (3x super-scaled), SVG, or Mermaid code
💾 5 concurrent saved projects
📱 Mobile-responsive with bottom-sheet menus
🔍 Hardware-accelerated canvas zoom (+/- 300%)
🔑 BYOK — your API key never leaves your browser

Privacy First (BYOK)

Your Gemini API key is stored only in your browser's
LocalStorage. Our backend acts purely as a secure proxy —
zero data retention.

🔗 Try it: AI Flowchart Studio

🚀 Also live on Product Hunt today — support appreciated!
Product Hunt Launch

Would love feedback from devs:

What would make you use this daily?
Any architecture improvements you'd suggest?
Would you pay for a hosted version (no API key needed)?

Thanks for reading! 🙏

DEV Community: Yuva Kunaal

CommitAI — Local AI-Powered Git Assistant Using Gemma 4

What I Built

Features

Demo

Code

How I Used Gemma 4

Architecture

Tech Stack

Future Improvements

I built a free AI Flowchart Studio — just launched today! 🚀

The Problem

How the AI Works (4-Stage Pipeline)

Tech Stack

Key Features

Privacy First (BYOK)