commitlint
Lints git commit messages against configurable rules. commitlint enforces the Conventional Commits specification (feat, fix, chore, docs, etc.) and other commit message formats via a Git hook (commit-msg). Works with Husky or Lefthook to reject commits that don't follow conventions. Powers the automated release pipeline: commitlint → semantic-release → automated versioning and changelogs.
Score Breakdown
⚙ Agent Friendliness
🔒 Security
Local tool with no network access. Validates text only. Supply chain: npm package, MIT licensed, conventional-changelog org.
⚡ Reliability
Best When
You want automated releases via semantic-release, need consistent commit history for changelogs, or have a team that needs to standardize commit message format.
Avoid When
You don't use Conventional Commits or don't need automated versioning — the overhead of commitlint setup isn't worth it without the downstream automation.
Use Cases
- • Enforce Conventional Commits format across a team so that semantic-release can automatically version and changelog releases from commit history
- • Block poorly-formatted commit messages at commit time using Git hook integration (commit-msg hook via Husky or Lefthook)
- • Lint commit messages in CI/CD to catch format violations in pull requests before merging to main branch
- • Configure custom commit scopes and types for monorepos where different packages have different allowed scopes
- • Standardize agent-generated commit messages by validating AI-produced commits against team conventions
Not For
- • Repository-wide code linting — commitlint lints commit messages only; use ESLint/Biome for code
- • Teams not adopting Conventional Commits — commitlint's value is tied to the Conventional Commits convention
- • Solo developers — the overhead of setup is most valuable for teams with multiple contributors
Interface
Authentication
Local CLI tool — no authentication. Runs as a Git hook during commit process.
Pricing
commitlint is MIT open source and maintained by the conventional-changelog organization.
Agent Metadata
Known Gotchas
- ⚠ commitlint config (commitlint.config.js) must extend a preset like @commitlint/config-conventional — bare config without extending a preset does nothing by default
- ⚠ Conventional Commits format is strict: 'type(scope): subject' — the colon and space after type(scope) are required; missing the space causes lint failure
- ⚠ In monorepos, allowed scopes must be explicitly configured — by default any scope is accepted; configure scope-enum rule to enforce package names as scopes
- ⚠ commitlint runs against the last commit message — in rebase scenarios, all commits being rebased are checked one by one; squash-and-merge workflows reduce this friction
- ⚠ Git commit --amend re-triggers the commit-msg hook — fixing a bad message via amend will re-run commitlint on the amended message
- ⚠ Node.js version requirements increased in commitlint 18+ — projects on Node 14/16 must stay on commitlint 17.x or upgrade Node
Alternatives
Full Evaluation Report
Comprehensive deep-dive: security analysis, reliability audit, agent experience review, cost modeling, competitive positioning, and improvement roadmap for commitlint.
AI-powered analysis · PDF + markdown · Delivered within 30 minutes
Package Brief
Quick verdict, integration guide, cost projections, gotchas with workarounds, and alternatives comparison.
Delivered within 10 minutes
Score Monitoring
Get alerted when this package's AF, security, or reliability scores change significantly. Stay ahead of regressions.
Continuous monitoring
Scores are editorial opinions as of 2026-03-06.