I Let AI Write My Commit Messages (And Never Looked Back)

Writing commit messages is the most boring part of development. Here's a 20-line script that does it for you — using git diff + AI.

Admit it. You've written this commit message before:

fix
update
asdfasdf
final final v2

We've all been there. Writing good commit messages takes time. But bad commits make your git history unreadable.

Here's how I automated it.

The Script (20 Lines)

#!/usr/bin/env python3
import subprocess
from openai import OpenAI

client = OpenAI(
    api_key="mb-your-key",
    base_url="https://aibridge-api.com/v1"
)

# Get staged diff
diff = subprocess.run(
    ["git", "diff", "--cached"],
    capture_output=True, text=True
).stdout

if not diff:
    print("Nothing staged. Run: git add .")
    exit(1)

# Let AI write the commit message
response = client.chat.completions.create(
    model="deepseek-coder",
    messages=[{
        "role": "user",
        "content": f"Write a concise commit message for this diff. "
                   f"Use conventional commits format (feat/fix/docs/...):\n\n{diff}"
    }],
    max_tokens=100
)

print(response.choices[0].message.content)

Usage

# Stage your changes
git add .

# Generate a commit message
python auto-commit.py

# Output:
# feat(auth): add rate limiting to login endpoint
#
# - Add RateLimiter class with sliding window
# - Apply 5 req/min limit to /auth/login
# - Return 429 with Retry-After header

Then just copy-paste:

git commit -m "$(python auto-commit.py)"

Why This Works

• Consistent format — Always conventional commits
• Saves time — 30 seconds → 0 seconds
• Better history — Readable git log
• Free — DeepSeek-coder costs $0.14/1M tokens ##Make It a Git Alias Add to ~/.gitconfig:

[alias]
    ai-commit = "!f() { git commit -m \"$(python ~/auto-commit.py)\"; }; f"

Now just run:

git ai-commit

Try It

1. Copy the script (20 lines above)
2. Get a free API key → aibridge-api.com
3. Stage changes → git add .
4. Run → python auto-commit.py

Your future self (and your team) will thank you for the clean git history.