Use when committing or pushing changes and the repository needs a version bump. Analyzes commits using conventional commit prefixes to determine whether the next release is a major, minor, or patch increment. Also use when the user asks about versioning, release planning, or changelog generation.
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See how to installReview the instructions the agent will receive before you install.
Determine the next version from commit history when preparing a release. The highest-impact release-relevant commit drives the bump.
Follows Semantic Versioning 2.0.0:
| Bump | Trigger | Examples |
|---|---|---|
| Major (X.0.0) | Breaking change | feat!:, fix!:, BREAKING CHANGE: in body/footer |
| Minor (x.Y.0) | New feature | feat:, feature: |
| Patch (x.y.Z) | Everything else | fix:, chore:, docs:, style:, refactor:, test:, ci:, perf: |
The highest bump wins: if any commit is major, the release is major — regardless of how many patches are in the batch.
Run the analysis script:
uv run skills/semantic-versioning/scripts/version-bump.py [repo-path]
Options:
--apply — update the version file after confirmation--tag — also create a git tagThe script auto-detects where the version lives:
| File | Field |
|---|---|
pyproject.toml | [project] version = "x.y.z" |
package.json | "version": "x.y.z" |
Cargo.toml | [package] version = "x.y.z" |
VERSION | Plain text file |
--apply) — update version file and optionally tagNever auto-apply version changes without user confirmation.
For best results, follow conventional commits:
<type>[optional scope][!]: <description>
[optional body]
[optional footer(s)]
If commits don't follow conventional format, fall back to keyword analysis:
For versions 0.y.z (pre-stable):
0.y.z until the project declares stability| Mistake | Fix |
|---|---|
Bumping major for every feat! in pre-1.0 | Pre-1.0: breaking changes go in minor |
| Forgetting to tag after version bump | Always tag: git tag v<version> |
| Version in multiple files getting out of sync | Use the script to update all detected version files |
| Non-conventional commit messages | Fall back to keyword analysis, but encourage conventional commits |
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