Official agent skill

Changeset

A skill your agent uses when a Biome change may affect users and you must decide whether it needs a changeset, choose the release level, or create and edit .changeset/.md release-note text.

OfficialApache-2.0Auto-check passedDevelopment

Install Changeset

skills CLI

$ npx skills add biomejs/biome --skill changeset -a claude-code

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

GitHub CLI

$ gh skill install biomejs/biome changeset --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/biomejs/biome.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.agents/skills/changeset .claude/skills/changeset && 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/

Paste into Claude Code

Install the "changeset" agent skill from https://github.com/biomejs/biome/tree/main/.agents/skills/changeset into .claude/skills/changeset/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "changeset", then confirm the skill loads.

Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

$skill-installer

$skill-installer install https://github.com/biomejs/biome/tree/main/.agents/skills/changeset

Type this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.

skills CLI

$ npx skills add biomejs/biome --skill changeset -a codex

Project install goes to .agents/skills/; add -g for ~/.codex/skills/.

GitHub CLI

$ gh skill install biomejs/biome changeset --agent codex

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/biomejs/biome.git skills-src && mkdir -p .agents/skills && cp -r skills-src/.agents/skills/changeset .agents/skills/changeset && rm -rf skills-src

Use ~/.agents/skills/ instead of .agents/skills for a personal install.

Codex skills documentation · loads skills from .agents/skills/

Paste into Codex

Install the "changeset" agent skill from https://github.com/biomejs/biome/tree/main/.agents/skills/changeset into .agents/skills/changeset/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "changeset", then confirm the skill loads.

Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

$ npx skills add biomejs/biome --skill changeset -a cursor

Project install goes to .agents/skills/; add -g for ~/.cursor/skills/.

GitHub CLI

$ gh skill install biomejs/biome changeset --agent cursor

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/biomejs/biome.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/.agents/skills/changeset .cursor/skills/changeset && rm -rf skills-src

Use ~/.cursor/skills/ instead of .cursor/skills for a personal install.

Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/

Paste into Cursor

Install the "changeset" agent skill from https://github.com/biomejs/biome/tree/main/.agents/skills/changeset into .cursor/skills/changeset/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "changeset", then confirm the skill loads.

Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

gemini skills install

$ gemini skills install https://github.com/biomejs/biome.git --path .agents/skills/changeset

--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.

skills CLI

$ npx skills add biomejs/biome --skill changeset -a gemini-cli

Project install goes to .agents/skills/; add -g for ~/.gemini/skills/.

GitHub CLI

$ gh skill install biomejs/biome changeset --agent gemini-cli

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/biomejs/biome.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/.agents/skills/changeset .gemini/skills/changeset && rm -rf skills-src

Use ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.

Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/

Paste into Gemini CLI

Install the "changeset" agent skill from https://github.com/biomejs/biome/tree/main/.agents/skills/changeset into .gemini/skills/changeset/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "changeset", then confirm the skill loads.

Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

GitHub CLI

$ gh skill install biomejs/biome changeset

Installs for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).

skills CLI

$ npx skills add biomejs/biome --skill changeset -a github-copilot

Project install goes to .agents/skills/; add -g for ~/.copilot/skills/.

Manual copy

$ git clone --depth 1 https://github.com/biomejs/biome.git skills-src && mkdir -p .github/skills && cp -r skills-src/.agents/skills/changeset .github/skills/changeset && rm -rf skills-src

Use ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.

GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/

Paste into GitHub Copilot

Install the "changeset" agent skill from https://github.com/biomejs/biome/tree/main/.agents/skills/changeset into .github/skills/changeset/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "changeset", then confirm the skill loads.

GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

$ npx skills add biomejs/biome --skill changeset -a opencode

OpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.

GitHub CLI

$ gh skill install biomejs/biome changeset --agent opencode

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/biomejs/biome.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/.agents/skills/changeset .opencode/skills/changeset && rm -rf skills-src

Use ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.

OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/

Paste into OpenCode

Install the "changeset" agent skill from https://github.com/biomejs/biome/tree/main/.agents/skills/changeset into .opencode/skills/changeset/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "changeset", then confirm the skill loads.

OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

Facts

Skill name: changeset
GitHub stars: 26k
Token cost: ~839 tokens
SKILL.md length: 383 words
Files: 1
Skills in repo: 12
Repo updated: Oct 8, 2026
First seen: Oct 8, 2026
Licence: Apache-2.0

At a glance

A skill your agent uses when a Biome change may affect users and you must decide whether it needs a changeset, choose the release level, or create and edit .changeset/.md release-note text.

A Biome change may affect users and you must decide whether it needs a changeset
SKILL.md covers Decide Whether One Is Required, Choose the Release Level, Create the File and Write the Entry, plus 2 more sections
Calls just
Choose the release level

What it does

Changeset is an agent skill from biomejs/biome, published by the product's own GitHub organization. Use this skill when a Biome change may affect users and you must decide whether it needs a changeset, choose the release level, or create and edit .changeset/.md release-note text. Do not use for implementation details or PR descriptions.

Its SKILL.md is about 840 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts. Compatibility notes: Designed for coding agents working on the Biome codebase (github.com/biomejs/biome).

It sits in Development, covering Changelog and release notes, Linting and formatting and Pull requests. The repository describes itself as: A toolchain for web projects, aimed to provide functionalities to maintain them. Biome offers formatter and linter, usable via CLI and LSP. The licence is Apache-2.0.

When your agent uses it

A Biome change may affect users and you must decide whether it needs a changeset
Choose the release level
Create and edit .changeset/.md release-note text
Implementation details

Example prompts

“/changeset”

Requirements

Compatibility (from SKILL.md): Designed for coding agents working on the Biome codebase (github.com/biomejs/biome).

What it can do on your machine

Read from SKILL.md and the folder at commit c870caa. 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
Shell commands in SKILL.md call:
- just
From the folder's file list and the shell code blocks in SKILL.md.
Network
Links to these hosts (documentation or services it may open):
- biomejs.dev
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.
Compatibility
Designed for coding agents working on the Biome codebase (github.com/biomejs/biome).
From compatibility in the SKILL.md frontmatter.

Context cost

Changeset loads about 839 tokens when it runs. Until then it costs about 63 tokens; SKILL.md has 383 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it: ~63
When it runs · the whole SKILL.md, loaded when a task matches: ~839

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 biomejs/biome at commit c870caa, republished under its Apache-2.0 licence (© biomejs). 383 words, ~839 tokens.

Download SKILL.mdSave it as .claude/skills/changeset/SKILL.md (or your agent's skills folder).

name: changeset
description: Use this skill when a Biome change may affect users and you must decide whether it needs a changeset, choose the release level, or create and edit `.changeset/*.md` release-note text. Do not use for implementation details or PR descriptions.
compatibility: Designed for coding agents working on the Biome codebase (github.com/biomejs/biome).

Changesets

Changesets describe user-visible behavior for release notes. Root AGENTS.md defines when automated contributions require one; CONTRIBUTING.md is canonical for package selection, versioning, branch targets, and prose format.

Decide Whether One Is Required

A changeset is required for behavior visible to users of the CLI, libraries, published crates, diagnostics, parser, formatter, linter, or assists.

No changeset is needed for an internal refactor with identical behavior, tests only, CI/build maintenance, or documentation-only edits.

Before opening a PR, explicitly confirm the user-facing classification as required by AGENTS.md. Do not infer user visibility only from the files changed.

Choose the Release Level

Change	Level	Target
Bug fix or non-breaking behavior correction	`patch`	`main`
New nursery lint rule	`patch`	`main`
New user-facing feature or nursery promotion	`minor`	`next`
Breaking user API change	`major`	`next`

Nursery rules are the exception to the usual new-feature mapping because they do not follow semantic versioning. Verify unusual cases against the current versioning policy.

Create the File

Run just new-changeset-empty to generate an empty file.

shell

just new-changeset-empty

An empty generated entry starts with frontmatter delimiters. Replace that frontmatter with the package and release level rather than appending a second block:

markdown

---
"@biomejs/biome": patch
---

Description.

Use #### or ##### for headings inside a longer entry. Other heading levels interfere with changelog generation.

Show full SKILL.md (179 more words)Show less

Write the Entry

Describe user-visible behavior, not implementation.
Use one to three sentences unless the impact genuinely needs an example.
Use past tense for the contribution and present tense for resulting Biome behavior.
Start bug fixes with the linked issue when one exists. If a link doesn't exist, start with a verb.
Link rule and assist names to their Biome website pages.
End every sentence with a full stop.

Include only the example needed to understand impact:

new rule: an invalid example;
existing rule: what became valid or invalid;
formatter: a diff block;
parser: source that now parses or is now rejected.

Do not copy a PR summary into the changeset. A changeset is release-note text and should omit test plans, internal design, and reviewer guidance.

Review Checklist

The behavior is user-visible.
The package is correct.
The release level agrees with branch policy.
The description matches the implemented behavior.
Issue, rule, and assist links are accurate.
Examples show observable impact.
The file has one valid frontmatter block.

References

Changeset policy: CONTRIBUTING.md#changelog
Branch targeting: CONTRIBUTING.md#creating-pull-requests
Versioning: https://biomejs.dev/internals/versioning/
Generator recipes: justfile

Files

Just SKILL.md in .agents/skills/changeset of biomejs/biome.

Open the folder on GitHubat commit c870caa

Compare with similar skills

Changeset 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.

Changeset compared with similar skills
Skill	Stars	Used in	Tokens	Auto-check	Licence	Repo updated
Changeset this skillbiomejs/biome	26k	—	~839	Automated safety check: Pass	Apache-2.0	today
PR Pushicebear0828/codex-proxy	1.8k	—	~2.2k	Automated safety check: Notes	Custom licence	today
PR Pushicebear0828/codex-proxy	1.8k	—	~2.3k	Automated safety check: Notes	Custom licence	today
Handsontable Pull Request Workflowhandsontable/handsontable	22k	—	~3.1k	Automated safety check: Pass	Custom licence	today
StarRocks Release NotesStarRocks/starrocks	12k	—	~1.9k	Automated safety check: Notes	Apache-2.0	today
Babysit PR To Pass CIsgl-project/sglang	37k	2 repos	~3k	Automated safety check: Pass	Apache-2.0	today

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Questions about Changeset

What does Changeset do?

A skill your agent uses when a Biome change may affect users and you must decide whether it needs a changeset, choose the release level, or create and edit .changeset/.md release-note text. Changeset is an agent skill from biomejs/biome, published by the product's own GitHub organization.md release-note text.

When should I use Changeset?

Changeset fits situations like: A Biome change may affect users and you must decide whether it needs a changeset; choose the release level; create and edit .changeset/.md release-note text; implementation details.

How do I install Changeset in Claude Code?

Run `npx skills add biomejs/biome --skill changeset -a claude-code`. Or copy the skill folder (.agents/skills/changeset in biomejs/biome) into .claude/skills/changeset in your project. Claude Code loads it when a task matches its description.

How do I install Changeset in Codex?

Run `npx skills add biomejs/biome --skill changeset -a codex`. Or copy the skill folder (.agents/skills/changeset in biomejs/biome) into .agents/skills/changeset in your project. Codex loads it when a task matches its description.

Can I use Changeset 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 biomejs/biome --skill changeset -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/changeset, .gemini/skills/changeset, .github/skills/changeset and .opencode/skills/changeset in your project.

What does Changeset need to run?

Going by SKILL.md and its folder, Changeset needs the command-line tools its instructions call (just). Compatibility (from SKILL.md): Designed for coding agents working on the Biome codebase (github.com/biomejs/biome)..

Does Changeset access the network?

SKILL.md names 1 domain. As links in the text: biomejs.dev. This is read from the text; nothing was executed.

Is Changeset 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 Changeset use?

Changeset 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 Changeset use?

About 839 tokens (SKILL.md is roughly 3.4k 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 Changeset?

Skills that share tags, products or a category with Changeset: PR Push (icebear0828/codex-proxy, 1.8k stars), PR Push (icebear0828/codex-proxy, 1.8k stars), Handsontable Pull Request Workflow (handsontable/handsontable, 22k stars) and StarRocks Release Notes (StarRocks/starrocks, 12k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Changeset?

biomejs (a GitHub organization, an official publisher) maintains it in biomejs/biome, which has 25,910 GitHub stars. The repository holds 12 skills in this directory. The repository was last updated on October 8, 2026.

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

Install Changeset

Facts

At a glance

What it does

When your agent uses it

Example prompts

Requirements

What it can do on your machine

Tool permissions

Runs code

Network

Credentials

Compatibility

Context cost

Safety

SKILL.md

Changesets

Decide Whether One Is Required

Choose the Release Level

Create the File

Write the Entry

Review Checklist

References

Files

Compare with similar skills

Similar skills

More from biomejs/biome

Related

Questions about Changeset