biome: Skill for Claude Code

Biome Code Review

Review changes read-only against business requirements and applicable behavioral, architectural, and subsystem constraints.

Invocation

Delegate completed reviews to a fresh subagent when available. Supply only:

• the review scope;
• the intended business requirements, including constraints the repository cannot establish.

To avoid bias, omit implementation details, suspected defects, priority files, prior findings, and expected review outcomes.

Review subagents must not delegate again. Without subagents, review the complete scope directly.

Treat delegated findings as candidates; the parent must validate them before confirming or acting.

Safety Boundary

Reviewers and validating parents must preserve the worktree. Authorized implementation follows validation, outside this skill.

• Do not create, edit, move, or delete files.
• Do not run project code, builds, tests, formatters, linters, codegen, benchmarks, package managers, LSPs, or daemons.
• Do not run mutating Git or GitHub commands except the single base-branch fetch allowed below.
• Do not use shell pipelines, scripts, sed, or awk to inspect source. Use file reads, globs, and text search.

Shell is limited to these review commands:

git fetch origin <main|next>
git status --short --branch --untracked-files=all
git branch --show-current
git rev-parse ...
git merge-base ...
git --no-pager diff --no-ext-diff --no-textconv ...
git --no-pager show --no-ext-diff --no-textconv ...
git --no-pager log ...
git ls-files ...
gh pr view <number> [--json ...]
gh pr diff <number>
gh issue view <number> [--json ...]

One fetch of the resolved base is allowed. If it fails, continue with the local remote-tracking branch and disclose that it may be stale. Documentation lookups are allowed only when checked-out source cannot settle an external language or API contract.

Establish Scope

Use the supplied PR, range, diff, files, or base; exclude unrelated worktree changes.