This MCP server validates and formats Git commit messages and branch names per the Udacity Git Commit Message Style Guide.
Validate commit messages (validate_commit_message): checks a full message for compliance (type prefix, subject ≤50 chars, capitalization, no trailing period, blank line after subject, body wrap ≤72 chars). Returns validity status with lists of problems and warnings.
Format commit messages (format_commit_message): auto-composes a compliant message from type (feat, fix, docs, style, refactor, test, chore), subject, optional body, footer. Capitalizes subject, removes trailing period, wraps body at 72 chars.
Validate branch names (validate_branch_name): checks against type/kebab-case convention (e.g., feat/add-dark-mode), allows release/* with version descriptions, exempts base branches (main).
Access style guides: provides markdown resources for commit rules (udacity://commit-styleguide) and branch naming (udacity://branch-naming).
Integrate with Claude: add as an MCP server via claude mcp add or Claude Desktop config for automated checks and formatting.
Validates and formats git commit messages according to the Udacity Git Commit Message Style Guide.
Click on "Install Server".
Wait a few minutes for the server to deploy. Once ready, it will show a "Started" state.
In the chat, type @ followed by the MCP server name and your instructions, e.g., "@mcp-udacity-commit Validate this commit message: 'fixed the bug'"
That's it! The server will respond to your query, and you can continue using it as needed.
Here is a step-by-step guide with screenshots.
An MCP server that validates and formats git commit messages according to the Udacity Git Commit Message Style Guide.
One line — paste it into your terminal:
claude mcp add udacity-commit -- npx -y mcp-udacity-commitFor Claude Desktop, add to claude_desktop_config.json:
{
"mcpServers": {
"udacity-commit": {
"command": "npx",
"args": ["-y", "mcp-udacity-commit"]
}
}
}git clone https://github.com/qwertymuzaffar/mcp-udacity-commit
cd mcp-udacity-commit
npm install
npm run build
claude mcp add udacity-commit -- node "$(pwd)/build/index.js"Related MCP server: Cursor Auto-Review MCP Server
Primitive | Name | Purpose |
Resource |
| The style-guide rules, as markdown |
Resource |
| The companion |
Tool |
| Checks a message against every rule (type, ≤50-char subject, capitalization, no trailing period, blank line, ≤72-char body wrap) |
Tool |
| Builds a compliant message from |
Tool |
| Checks a branch name against the companion |
format_commit_message turns loose parts into a compliant commit:
in: type=fix subject="prevent duplicate auth token refresh."
body="The refresh timer could fire twice under load, minting two tokens…"
footer="Resolves: #142"
out:
fix: Prevent duplicate auth token refresh
The refresh timer could fire twice under load, minting two tokens and
logging the user out. Serialize refreshes behind a single in-flight
promise so concurrent callers await the same request.
Resolves: #142validate_commit_message flags every violation:
"Fixed the login bug." → ❌ Not compliant.
• Subject must follow "type: Subject".
• Subject must not end with a period.validate_branch_name enforces the companion type/kebab-case convention:
"feat/add-dark-mode" → ✅ Compliant branch name.
"release/1.2.0" → ✅ Compliant branch name.
"Feature/Add_Dark_Mode" → ❌ Not compliant.
• Unknown type "Feature". Use one of: feat, fix, docs, style, refactor, test, chore, release.
• Description must be lowercase kebab-case. Got: "Add_Dark_Mode".
"main" → ✅ (base branch — feature-branch rules don't apply)npm install
npm run build # → build/index.js
npm run test:client # spawns the server and exercises the toolsMIT
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