Measure a branch against the commit it stands on — extract the base instead of flipping the working tree, pick the base by hash, and prove a new test case red on it.

Custom licenceAuto-check passedAgent Workflows

Install Base Comparison

skills CLI
$ npx skills add stylelint-stylistic/stylelint-stylistic --skill base-comparison -a claude-code

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

GitHub CLI
$ gh skill install stylelint-stylistic/stylelint-stylistic base-comparison --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/stylelint-stylistic/stylelint-stylistic.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.agents/skills/base-comparison .claude/skills/base-comparison && 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
base-comparison
GitHub stars
106
Token cost
~2.2k tokens
SKILL.md length
1,282 words
Files
1
Skills in repo
6
Repo updated
First seen
Licence
Custom licence

At a glance

Measure a branch against the commit it stands on — extract the base instead of flipping the working tree, pick the base by hash, and prove a new test case red on it.

  • Works in 3 steps: The sweep's own checkout. make sweep… → An archive. git archive lib | tar -x -C… → A throwaway worktree for anything…
  • Tasks that involve Test generation
  • SKILL.md covers Never flip a tracked path, Commit first, always, Name the base by hash and Prove the new cases red on the…, plus 4 more sections
  • Calls git, make and vitest

What it does

Base Comparison is an agent skill from stylelint-stylistic/stylelint-stylistic. Measure a branch against the commit it stands on — extract the base instead of flipping the working tree, pick the base by hash, and prove a new test case red on it. Use before any run that compares two versions of lib/, before handing a branch to a review subagent, and whenever a probe, a mutant or an oracle needs the code as it was.

Its SKILL.md is about 2.2k 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 Agent Workflows, covering Test generation and Subagents. It works with Git. The repository describes itself as: A collection of stylistic rules for Stylelintin in a form of a plugin.

When your agent uses it

  • Tasks that involve Test generation
  • Tasks that involve Subagents

Example prompts

  • “/base-comparison”

Workflow steps

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

  1. The sweep's own checkout. make sweep extracts the base's lib/ under tmp/checkouts// and leaves it there. loadRules(path) of…
  2. An archive. git archive lib | tar -x -C tmp/base for a probe that needs no dependencies.
  3. A throwaway worktree for anything needing an install — the oracles, a lint sweep

What it can do on your machine

Read from SKILL.md and the folder at commit e74a1ee. 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:

    • git
    • make
    • vitest

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

  • Network

    No URLs in SKILL.md. Its commands use git, which can reach the network depending on how they are called.

    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

Base Comparison loads about 2.2k tokens when it runs. Until then it costs about 89 tokens; SKILL.md has 1,282 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~89
When it runs · the whole SKILL.md, loaded when a task matches
~2.2k

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

Its licence (Custom licence) doesn't allow us to republish the file, so here is its outline and opening line. It has 1,282 words (~2,164 tokens).

“Everything here exists because one move — reverting a tracked path to look at the old code — keeps eating uncommitted work: four times across three sessions by one count, and three more inside a single later session, twice in…”

— opening of SKILL.md by stylelint-stylistic, Custom licence
name
base-comparison

Read the full SKILL.md on GitHub

Files

Just SKILL.md in .agents/skills/base-comparison of stylelint-stylistic/stylelint-stylistic.

Open the folder on GitHubat commit e74a1ee

Compare with similar skills

Base Comparison 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.

Base Comparison compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Base Comparison this skillstylelint-stylistic/stylelint-stylistic106—~2.2kAutomated safety check: PassCustom licence
Final ReviewDanMcInerney/architect-loop626—~1.7kAutomated safety check: PassMIT
Manual CLI Testpigweed-project/pigweed548—~4.1kAutomated safety check: PassApache-2.0
Review Workpeterkrueck/Claude-Code-Development-Kit1.4k—~3.3kAutomated safety check: PassMIT
User Reviewantoinecellerier/speaker-tuning-to-easyeffects144—~4.3kAutomated safety check: PassMIT
Review SwarmDimillian/Skills4k—~1.6kAutomated safety check: PassMIT

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Works with

Questions about Base Comparison

What does Base Comparison do?

Measure a branch against the commit it stands on — extract the base instead of flipping the working tree, pick the base by hash, and prove a new test case red on it. Base Comparison is an agent skill from stylelint-stylistic/stylelint-stylistic. Measure a branch against the commit it stands on — extract the base instead of flipping the working tree, pick the base by hash, and prove a new test case red on it.

When should I use Base Comparison?

Base Comparison fits situations like: tasks that involve Test generation; tasks that involve Subagents.

How do I install Base Comparison in Claude Code?

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

How do I install Base Comparison in Codex?

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

Can I use Base Comparison 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 stylelint-stylistic/stylelint-stylistic --skill base-comparison -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/base-comparison, .gemini/skills/base-comparison, .github/skills/base-comparison and .opencode/skills/base-comparison in your project.

What does Base Comparison need to run?

Going by SKILL.md and its folder, Base Comparison needs the command-line tools its instructions call (git, make and vitest).

Does Base Comparison access the network?

SKILL.md contains no URLs. Its commands use git, which can reach the network depending on how they are called. This is read from the text; nothing was executed.

Is Base Comparison 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 Base Comparison use?

Base Comparison has a licence file (the repository's licence) that doesn't match a standard licence. Read it on GitHub before reusing the skill.

How many tokens does Base Comparison use?

About 2.2k tokens (SKILL.md is roughly 8.7k 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 Base Comparison?

Skills that share tags, products or a category with Base Comparison: Final Review (DanMcInerney/architect-loop, 626 stars), Manual CLI Test (pigweed-project/pigweed, 548 stars), Review Work (peterkrueck/Claude-Code-Development-Kit, 1.4k stars) and User Review (antoinecellerier/speaker-tuning-to-easyeffects, 144 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Base Comparison?

stylelint-stylistic (a GitHub organization) maintains it in stylelint-stylistic/stylelint-stylistic, which has 106 GitHub stars. The repository holds 6 skills in this directory. The repository was last updated on October 5, 2026.

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