One format, one line per change, still readable a year from now.
A changelog entry format and the entry itself, built from your changes and matched to your existing style.
Changelogs decay. Early entries are tidy, then come paragraphs, mixed tenses, internal jargon, and a breaking change hidden in the middle. Nobody can scan it, so nobody trusts it.
Changelog Writer fixes the format once: header, four categories, one tense, one line per change. It prefixes breaking changes with a one-line migration step, merges minor fixes, and compares the new entry with the last one so the file keeps a steady shape.
What it produces.
- →A fixed entry format you can reuse for every release
- →The entry for this version, sorted into categories
- →Breaking changes marked and listed first, with migration steps
- →A consistency check against your previous entry
- ✦Maintainers of libraries and small products
- ✦Product managers who keep the changelog file
- ✦Teams converting a messy history into a clean format
- →changelog-writer.zip: a native Claude Skill. Upload to Settings → Skills in Claude, or unzip to
~/.claude/skills/ - →changelog-writer-skill.md: plain markdown. Works in ChatGPT Custom GPTs, Gemini, Claude Projects, agent system prompts, anywhere
- →A README inside the zip with install steps for Claude, ChatGPT, and Gemini
No subscription · free updates within v1.x
Works as a Claude Skill (.zip) and as a plain .md for ChatGPT, Gemini & every LLM
Delivered to your email within 60 seconds · Secured by Stripe
Price includes UK VAT where applicable
Before you buy.
How is this different from just asking Claude directly?
Asked cold, Claude writes friendly summaries whose style changes every time you ask. This holds one format across releases, keeps each line short, and checks the draft against your last entry.
How is this different from a Tool?
Playbooks are systematically produced to a fixed template and priced accordingly ($12.99). Tools are hand-built, one at a time, and go deeper ($39 to $199). A Playbook gives you a reliable method for routine work; a Tool is for when the judgment matters more than the format.
Will this work with ChatGPT, Gemini, and other LLMs?
Yes. You get a native Claude Skill (.zip) that auto-invokes in Claude, plus a plain .md you can paste into a ChatGPT Custom GPT, a Gemini system prompt, or any LLM. The procedure travels with the file.
Can I share this with my team?
It's licensed for your own personal and professional use. The output it produces is yours to circulate. To put the Playbook itself in the hands of a whole team, email hello@authority.md about team licensing.
What if it doesn't work for me?
If the file hasn't been delivered, or arrives defective or empty, we refund in full: see our refund policy.