Agent skill

API Changelog Versioning

by secondsky in secondsky/claude-skills

Creates comprehensive API changelogs documenting breaking changes, deprecations, and migration strategies for API consumers.

MITAuto-check passedDevelopment

Install API Changelog Versioning

skills CLI
$ npx skills add secondsky/claude-skills --skill api-changelog-versioning -a claude-code

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

GitHub CLI
$ gh skill install secondsky/claude-skills api-changelog-versioning --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/secondsky/claude-skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/plugins/api-changelog-versioning/skills/api-changelog-versioning .claude/skills/api-changelog-versioning && 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
api-changelog-versioning
GitHub stars
227
Used in
1 other repo
Token cost
~497 tokens
SKILL.md length
74 words
Files
1
Skills in repo
169
Repo updated
First seen
Licence
MIT

At a glance

Creates comprehensive API changelogs documenting breaking changes, deprecations, and migration strategies for API consumers.

  • Works in 4 steps: Update SDK to v3.x → Modify response handlers → Test in staging environment → …
  • Managing API versions
  • SKILL.md covers Changelog Structure, Deprecation Schedule, Version Support Policy and Migration Guide Template
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

API Changelog Versioning is an agent skill from secondsky/claude-skills. Creates comprehensive API changelogs documenting breaking changes, deprecations, and migration strategies for API consumers. Use when managing API versions, communicating breaking changes, or creating upgrade guides.

Its SKILL.md is about 500 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 Code migrations. The repository describes itself as: Production-ready skills for Claude Code CLI - Cloudflare, React, Tailwind v4, and AI integrations. The licence is MIT.

When your agent uses it

  • Managing API versions
  • Communicating breaking changes
  • Creating upgrade guides

Example prompts

  • “Use the api-changelog-versioning skill to create comprehensive API changelogs documenting breaking changes, deprecations, and migration strategies…”
  • “/api-changelog-versioning”

Workflow steps

4 steps, taken from the first numbered list in SKILL.md.

  1. Update SDK to v3.x
  2. Modify response handlers
  3. Test in staging environment
  4. Update production

What it can do on your machine

Read from SKILL.md and the folder at commit 8837836. 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 and json).

    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

API Changelog Versioning loads about 497 tokens when it runs. Until then it costs about 60 tokens; SKILL.md has 74 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~60
When it runs · the whole SKILL.md, loaded when a task matches
~497

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 secondsky/claude-skills at commit 8837836, republished under its MIT licence (© secondsky). 74 words, ~497 tokens.

Download SKILL.mdSave it as .claude/skills/api-changelog-versioning/SKILL.md (or your agent's skills folder).
name
api-changelog-versioning
description
Creates comprehensive API changelogs documenting breaking changes, deprecations, and migration strategies for API consumers. Use when managing API versions, communicating breaking changes, or creating upgrade guides.
license
MIT

API Changelog & Versioning

Document API changes with clear migration paths and deprecation timelines.

Changelog Structure

markdown
# API Changelog

## v3.0.0 (2025-01-15) - Breaking Changes

### Breaking Changes
- Response format now follows JSON:API specification
- Authentication switched from API tokens to JWT Bearer

### Migration Steps
1. Update base URL to `/api/v3`
2. Replace `Authorization: Token xxx` with `Authorization: Bearer xxx`
3. Update response parsing for new envelope format

## v2.5.0 (2024-12-01) - Features

### New Features
- Webhook support for order events
- Batch operations endpoint
- Field filtering via `?fields=` parameter

### Improvements
- 56% faster response times on /products
- Enhanced error messages with field-specific suggestions

Deprecation Schedule

VersionStatusSupport Until
v3.xCurrentFull support
v2.xMaintenance2025-06-01
v1.xEOLUnsupported

Version Support Policy

  • Current: Full support, new features
  • Maintenance: Bug fixes and security only
  • EOL: No support, remove from docs

Migration Guide Template

markdown
## Migrating from v2 to v3

### Before (v2)
```json
{ "user_name": "john" }
After (v3)
json
{ "data": { "type": "user", "attributes": { "name": "john" } } }
Steps
  1. Update SDK to v3.x
  2. Modify response handlers
  3. Test in staging environment
  4. Update production

## Best Practices

- Provide 3-6 months deprecation notice
- Include before/after code examples
- Mark breaking changes prominently
- Maintain backward compatibility when feasible
- Version via URL path (`/api/v1/`) for clarity

© secondsky, MIT. 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 plugins/api-changelog-versioning/skills/api-changelog-versioning of secondsky/claude-skills.

Open the folder on GitHubat commit 8837836

Used in 1 other repository

We found 2 copies of this SKILL.md (exact, near-identical or edited) in other folders, from 1 other GitHub owner. This page covers the copy in secondsky/claude-skills, which our catalogue first saw on October 7, 2026.

Compare with similar skills

API Changelog Versioning 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.

API Changelog Versioning compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
API Changelog Versioning this skillsecondsky/claude-skills2271 repos~497Automated safety check: PassMIT
Deprecate R Functions and Argumentstidyverse/dplyr5.1k1 repos~1.2kAutomated safety check: PassCustom licence
Releasing Php Packageyansongda/pay5.4k—~1.6kAutomated safety check: PassMIT
Releasejaemk/self_update961—~2.2kAutomated safety check: PassMIT
Releasejaemk/cached2.1k—~2.8kAutomated safety check: PassMIT
Mariadb Operator Release Notesmariadb-operator/mariadb-operator1k—~3.3kAutomated safety check: PassApache-2.0

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Categories

Questions about API Changelog Versioning

What does API Changelog Versioning do?

Creates comprehensive API changelogs documenting breaking changes, deprecations, and migration strategies for API consumers. API Changelog Versioning is an agent skill from secondsky/claude-skills. Creates comprehensive API changelogs documenting breaking changes, deprecations, and migration strategies for API consumers.

When should I use API Changelog Versioning?

API Changelog Versioning fits situations like: managing API versions; communicating breaking changes; creating upgrade guides.

How do I install API Changelog Versioning in Claude Code?

Run `npx skills add secondsky/claude-skills --skill api-changelog-versioning -a claude-code`. Or copy the skill folder (plugins/api-changelog-versioning/skills/api-changelog-versioning in secondsky/claude-skills) into .claude/skills/api-changelog-versioning in your project. Claude Code loads it when a task matches its description.

How do I install API Changelog Versioning in Codex?

Run `npx skills add secondsky/claude-skills --skill api-changelog-versioning -a codex`. Or copy the skill folder (plugins/api-changelog-versioning/skills/api-changelog-versioning in secondsky/claude-skills) into .agents/skills/api-changelog-versioning in your project. Codex loads it when a task matches its description.

Can I use API Changelog Versioning 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 secondsky/claude-skills --skill api-changelog-versioning -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/api-changelog-versioning, .gemini/skills/api-changelog-versioning, .github/skills/api-changelog-versioning and .opencode/skills/api-changelog-versioning in your project.

What does API Changelog Versioning need to run?

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

Does API Changelog Versioning 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 API Changelog Versioning 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 API Changelog Versioning use?

API Changelog Versioning is published under the MIT licence (declared in SKILL.md). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does API Changelog Versioning use?

About 497 tokens (SKILL.md is roughly 2k 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 API Changelog Versioning?

Skills that share tags, products or a category with API Changelog Versioning: Deprecate R Functions and Arguments (tidyverse/dplyr, 5.1k stars), Releasing Php Package (yansongda/pay, 5.4k stars), Release (jaemk/self_update, 961 stars) and Release (jaemk/cached, 2.1k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains API Changelog Versioning?

secondsky (a GitHub user) maintains it in secondsky/claude-skills, which has 227 GitHub stars. The repository holds 169 skills in this directory. The repository was last updated on September 28, 2026.

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