Feature Request: Auto-generate commit summary with AI integration (e.g., Cursor/opencode)

[pengatgstdev]

Description

Currently, when committing changes in Lazygit, users have to manually write commit messages. It would be great if Lazygit could integrate with AI services (like Cursor, opencode, or local LLMs) to auto-generate commit summaries based on the staged changes.

like Cursor:

Use Case

When commit code in Lazygit, a user could:

1. Stage files as usual
2. Press a key (e.g., Ctrl+G or a dedicated button) to generate a commit message
3. Lazygit sends the staged diff to an AI service (or local model) and returns a suggested summary
4. User can review, edit, and accept the message

This would save significant time, especially for:

• Developers who make frequent commits
• Teams requiring standardized commit message formats
• Users who struggle to write concise, descriptive commit messages

Suggested Implementation

Option A: External CLI Integration
Allow Lazygit to call an external command/script that:

• Receives the staged diff (or file list) as input
• Returns a commit message
• Example: lazygit-commit-helper could be user-configurable to call git diff --staged | ai-summarize

Option B: Built-in AI Integration
Add optional configuration to Lazygit's config.yml:

ai:
  provider: "openai" # or "anthropic", "local"
  api_key: "your-key"
  model: "gpt-4o-mini"
  prompt_template: "Generate a concise commit message for these changes:"

Option C: Simple LLM-friendly Output Mode
Add a flag/mode where Lazygit outputs the staged diff to stdout so it can be piped to an AI tool:

lazygit --print-staged-diff | ai-summarize

Why This Matters

• Productivity: Reduces context switching between terminal and Lazygit
• Consistency: Helps enforce conventional commit formats
• Accessibility: Helps users who struggle with writing commit messages

Related

This is similar to features in other Git tools:

• GitLens (VS Code) has "AI Generate Commit Message"
• GitKraken has "AI Commit Message" (paid feature)
• Many CLI tools now offer AI-powered commit helpers

Potential Challenges

• API key management (should be user's responsibility)
• Network latency (could be optional/off by default)
• Cost concerns (should be opt-in)

Would the maintainers be open to this feature? Happy to help discuss implementation details or submit a PR if there's interest.

[stefanhaller]

No, this is not useful, and lazygit will not have this feature (we had several issues and even PRs about this in the past). And yes, I know I'm pretty much alone with this opinion these days.

To expand on this a bit: AI is good at summarizing a diff. However, a summary of the diff is not what you need in a good commit message; users can just read the diff itself if they want that information (and if the diff needs a summary because it is so long that it is hard to get an overview of the changes, then you should break the commit down into smaller ones).

Things that you do want in a good commit message include:

• why a change was made
• which possible alternative approaches were tried and rejected, and why
• exact reproduction recipes of the bug that is being fixed
• possible performance implications of the change
• other information that is not contained in the diff itself

AI cannot possibly guess any of this. Do yourself a favor and learn to write good commit messages manually.

[pengatgstdev]

Alright then, Thank you for your answer.