AI Diff Commit Message

VS Code extension that generates commit messages from Git diffs. It defaults to DeepSeek, supports OpenAI-compatible chat completion APIs, and handles workspaces with multiple Git repositories by generating messages per repository.

Repository

Features

• Generate a commit message for a selected repository.
• Generate commit messages for every repository in the current workspace.
• In multi-repository Source Control views, the quick-fill button scans all displayed repositories with diffs when no single repository context is available.
• Supports staged-only or staged plus unstaged diffs.
• Configurable model, API base URL, commit style, language, system prompt, reasoning effort, and diff size.
• Stores API keys in VS Code Secret Storage, with environment variable fallback.

Commands

• AI Commit: 快速填入提交信息
• AI Commit: Configure API Key
• AI Commit: Generate Message for Repository
• AI Commit: Generate Messages for All Repositories

Default DeepSeek Request Shape

The extension calls:

POST https://api.deepseek.com/chat/completions
Authorization: Bearer ${DEEPSEEK_API_KEY}
Content-Type: application/json

with defaults:

• model: deepseek-v4-pro
• thinking.type: enabled
• reasoning_effort: high
• stream: false

Configuration

Search for AI Commit in VS Code settings.

Recommended first-time setup:

1. Choose aiCommit.provider.
2. Keep aiCommit.apiBaseUrl empty unless you use a proxy or private gateway.
3. Choose aiCommit.modelPreset.
4. Run AI Commit: Configure API Key.
5. Click the AI Commit button in Source Control.

Common settings, in the same order as the VS Code settings page:

• aiCommit.provider
• aiCommit.apiBaseUrl
• aiCommit.modelPreset
• aiCommit.model
• aiCommit.apiKeyEnv
• aiCommit.commitStyle
• aiCommit.language
• aiCommit.customStyleInstructions
• aiCommit.customLanguageInstructions
• aiCommit.systemPromptMode
• aiCommit.systemPromptExtra
• aiCommit.systemPromptOverride
• aiCommit.diffMode
• aiCommit.maxDiffChars

Models

Use aiCommit.modelPreset for common models:

• deepseek-v4-pro
• deepseek-chat
• deepseek-reasoner
• gpt-4.1
• gpt-4.1-mini
• gpt-4o
• gpt-4o-mini
• qwen-plus
• qwen-max
• qwen3-coder-plus
• glm-4-plus
• glm-4-flash
• siliconflow-deepseek-v3
• siliconflow-deepseek-r1
• custom

When aiCommit.modelPreset is custom, set aiCommit.model to any OpenAI-compatible model name.

Provider defaults:

• deepseek: https://api.deepseek.com
• openai: https://api.openai.com/v1
• siliconflow: https://api.siliconflow.cn/v1
• dashscope: https://dashscope.aliyuncs.com/compatible-mode/v1
• zhipu: https://open.bigmodel.cn/api/paas/v4
• openai-compatible: set aiCommit.apiBaseUrl manually

API key environment defaults:

• deepseek: DEEPSEEK_API_KEY
• openai: OPENAI_API_KEY
• siliconflow: SILICONFLOW_API_KEY
• dashscope: DASHSCOPE_API_KEY
• zhipu: ZHIPU_API_KEY
• openai-compatible: OPENAI_API_KEY

Commit Styles

• conventional
• concise
• detailed
• semantic
• angular
• gitmoji
• ticket
• monorepo
• release
• custom

Languages

• auto
• english
• chinese-simplified
• chinese-traditional
• japanese
• korean
• spanish
• french
• german
• custom

System Prompt

Use aiCommit.systemPromptMode:

• append: keep the built-in safety and style prompt, then append aiCommit.systemPromptExtra.
• override: replace the built-in prompt with aiCommit.systemPromptOverride.