Agent skill

Semver Analyzer

by revfactory in revfactory/harness-100

Methodology for analyzing changes according to Semantic Versioning (SemVer) rules and determining the appropriate version number.

Apache-2.0Auto-check passedDevelopment

Install Semver Analyzer

skills CLI
$ npx skills add revfactory/harness-100 --skill semver-analyzer -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install revfactory/harness-100 semver-analyzer --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/revfactory/harness-100.git skills-src && mkdir -p .claude/skills && cp -r skills-src/en/39-changelog-generator/.claude/skills/semver-analyzer .claude/skills/semver-analyzer && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
semver-analyzer
GitHub stars
1.3k
Token cost
~978 tokens
SKILL.md length
238 words
Files
1
Skills in repo
464
Repo updated
First seen
Licence
Apache-2.0

At a glance

Methodology for analyzing changes according to Semantic Versioning (SemVer) rules and determining the appropriate version number.

  • SemVer analysis
  • SKILL.md covers Target Agents, SemVer 2.0.0 Core Rules, Breaking Change Assessment… and Version Bump Decision Algorithm, plus 3 more sections
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
  • Version number determination

What it does

Semver Analyzer is an agent skill from revfactory/harness-100. Methodology for analyzing changes according to Semantic Versioning (SemVer) rules and determining the appropriate version number. Use this skill for 'SemVer analysis', 'version number determination', 'Breaking Change assessment', 'version bump decisions', and other version management tasks. Note: automatic git tag creation and CI/CD release execution are outside the scope of this skill.

Its SKILL.md is about 980 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It sits in Development, covering Changelog and release notes and CI/CD. It works with Git. The licence is Apache-2.0.

When your agent uses it

  • SemVer analysis
  • Version number determination
  • Breaking Change assessment
  • Version bump decisions

Example prompts

  • “SemVer analysis”
  • “version number determination”
  • “Breaking Change assessment”
  • “/semver-analyzer”

What it can do on your machine

Read from SKILL.md and the folder at commit 8e8d35c. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    No scripts in the folder and no shell commands in SKILL.md (its code samples are markdown).

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md.

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Semver Analyzer loads about 978 tokens when it runs. Until then it costs about 101 tokens; SKILL.md has 238 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~101
When it runs · the whole SKILL.md, loaded when a task matches
~978

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from revfactory/harness-100 at commit 8e8d35c, republished under its Apache-2.0 licence (© revfactory). 238 words, ~978 tokens.

Download SKILL.mdSave it as .claude/skills/semver-analyzer/SKILL.md (or your agent's skills folder).
name
semver-analyzer
description
Methodology for analyzing changes according to Semantic Versioning (SemVer) rules and determining the appropriate version number. Use this skill for 'SemVer analysis', 'version number determination', 'Breaking Change assessment', 'version bump decisions', and other version management tasks. Note: automatic git tag creation and CI/CD release execution are outside the scope of this skill.

SemVer Analyzer — Semantic Versioning Analysis Methodology

A skill that enhances version determination capabilities for the change-classifier and release-note-writer.

Target Agents

  • change-classifier — Determines the SemVer impact of changes
  • release-note-writer — Determines version numbers and highlights

SemVer 2.0.0 Core Rules

MAJOR.MINOR.PATCH[-prerelease][+build]

MAJOR: Incompatible API changes (Breaking Change)
MINOR: Backward-compatible feature additions
PATCH: Backward-compatible bug fixes

Breaking Change Assessment Matrix

API/Library
Change TypeBreaking?Example
Public function removedYESremove_user() deleted
Public function signature changedYESRequired parameter added/removed
Return type changedYESdict to list
Exception type changedYESValueError to TypeError
Default value changedMAYBEDepends on behavioral change
New optional parameter addedNOdef func(x, new=None)
New public function addedNONo impact on existing code
Internal function changedNO_private_func()
Performance improvementNOBehavior unchanged
Web API (REST/GraphQL)
Change TypeBreaking?
Endpoint removed/movedYES
Required field added (request)YES
Response field removedYES
Response structure changedYES
Authentication method changedYES
New optional field added (request)NO
New response field addedNO
New endpoint addedNO
Database
Change TypeBreaking?
Table/column removedYES
NOT NULL constraint addedYES
Column type changedYES
New nullable column addedNO
New index addedNO

Version Bump Decision Algorithm

Input: List of changes

1. Breaking Change present? -> MAJOR bump
2. New features present? -> MINOR bump
3. Bug fixes only? -> PATCH bump

Special rules:
- MAJOR = 0 (in development): Breaking Changes allowed as MINOR
- Pre-release versions: 0.x.y-alpha.1 -> MAJOR on stable release
- Mixed types: Apply the highest level

Conventional Commits Mapping

PrefixSemVer ImpactRelease Notes Section
feat:MINORAdded
fix:PATCHFixed
feat!: / BREAKING CHANGE:MAJORBreaking Changes
perf:PATCHPerformance
refactor:-Changed
docs:-Documentation
test:-- (may exclude from notes)
chore:-- (may exclude from notes)
ci:-- (may exclude from notes)
style:-- (may exclude from notes)
deps:PATCH~MAJORDependencies

Keep a Changelog Format

markdown
# Changelog

## [Unreleased]

## [2.0.0] - 2025-01-15

### Breaking Changes
- `createUser()` API renamed to `registerUser()` (#123)

### Added
- Team management feature (#456)
- Dark mode support (#789)

### Changed
- Login screen UI improvements (#234)

### Deprecated
- `v1` API endpoints (will be removed in v3.0)

### Fixed
- Password reset email not sending (#567)

### Security
- XSS vulnerability patch (#890)

Pre-Release Version System

1.0.0-alpha.1 -> Initial alpha
1.0.0-alpha.2 -> Alpha fix
1.0.0-beta.1  -> Beta entry
1.0.0-beta.2  -> Beta fix
1.0.0-rc.1    -> Release candidate
1.0.0         -> Stable release

Precedence: alpha < beta < rc < release

© revfactory, Apache-2.0. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

Just SKILL.md in en/39-changelog-generator/.claude/skills/semver-analyzer of revfactory/harness-100.

Open the folder on GitHubat commit 8e8d35c

Compare with similar skills

Semver Analyzer next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Semver Analyzer compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Semver Analyzer this skillrevfactory/harness-1001.3k—~978Automated safety check: PassApache-2.0
Worktrunk Release Workflowmax-sixty/worktrunk8.9k—~6.9kAutomated safety check: PassCustom licence
Coffee GB Releasetrekawek/coffee-gb1.2k—~1.4kAutomated safety check: PassMIT
Kt Search Releasejillesvangurp/kt-search155—~1.2kAutomated safety check: PassMIT
Codex Proxy RS Releasezyycn/codex-proxy-rs738—~327Automated safety check: PassApache-2.0
Docs CIjh941213/my-cc-harness126—~989Automated safety check: NotesNone

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Works with

Questions about Semver Analyzer

What does Semver Analyzer do?

Methodology for analyzing changes according to Semantic Versioning (SemVer) rules and determining the appropriate version number. Semver Analyzer is an agent skill from revfactory/harness-100. Methodology for analyzing changes according to Semantic Versioning (SemVer) rules and determining the appropriate version number.

When should I use Semver Analyzer?

Semver Analyzer fits situations like: semVer analysis; version number determination; breaking Change assessment; version bump decisions.

How do I install Semver Analyzer in Claude Code?

Run `npx skills add revfactory/harness-100 --skill semver-analyzer -a claude-code`. Or copy the skill folder (en/39-changelog-generator/.claude/skills/semver-analyzer in revfactory/harness-100) into .claude/skills/semver-analyzer in your project. Claude Code loads it when a task matches its description.

How do I install Semver Analyzer in Codex?

Run `npx skills add revfactory/harness-100 --skill semver-analyzer -a codex`. Or copy the skill folder (en/39-changelog-generator/.claude/skills/semver-analyzer in revfactory/harness-100) into .agents/skills/semver-analyzer in your project. Codex loads it when a task matches its description.

Can I use Semver Analyzer in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add revfactory/harness-100 --skill semver-analyzer -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/semver-analyzer, .gemini/skills/semver-analyzer, .github/skills/semver-analyzer and .opencode/skills/semver-analyzer in your project.

What does Semver Analyzer need to run?

SKILL.md names no scripts, command-line tools or credentials: Semver Analyzer is instructions for the agent only.

Does Semver Analyzer access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Semver Analyzer safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Semver Analyzer use?

Semver Analyzer is published under the Apache-2.0 licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Semver Analyzer use?

About 978 tokens (SKILL.md is roughly 3.9k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Semver Analyzer?

Skills that share tags, products or a category with Semver Analyzer: Worktrunk Release Workflow (max-sixty/worktrunk, 8.9k stars), Coffee GB Release (trekawek/coffee-gb, 1.2k stars), Kt Search Release (jillesvangurp/kt-search, 155 stars) and Codex Proxy RS Release (zyycn/codex-proxy-rs, 738 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Semver Analyzer?

revfactory (a GitHub user) maintains it in revfactory/harness-100, which has 1,290 GitHub stars. The repository holds 464 skills in this directory. The repository was last updated on March 22, 2026.

Source: revfactory/harness-100 on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.