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bis-codebis-code/claude-toolkit/.claude/skills/performance-review/SKILL.md

performance-review

Skill8 starsChanged 6 months agoMITView on GitHub

Review code changes for performance anti-patterns — N+1 queries, unbounded results, blocking ops.

26 other projects use a version of this.

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Used with

Projects with it also use ci-cd-pipeline, architecture-review and 2 more.

Other files people use alongside this one.

Files found in the same public projects as a version of this one, more often than they turn up anywhere else. Each project counts once, large collections count for less, and this file's own repository is left out.
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    architecture-review

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The file

We split this skill into the rules it gives an agent

1 rule. 0 are common, 1 is distinctive, and 0 are very specific to this project.

  • 0

    Common

    Most of the 22 edited versions we read keep these.

  • 1

    Distinctive

    This author's own choices. Worth a look.

  • 0

    Very specific

    Tied to their project's names, files or tools. Probably skip.

  • Common
  • Distinctive
  • Very specific
  1. Distinctive:

    If arguments are provided (file paths or PR number), use those as scope

    line 13

“Common” is measured: kept by at least 6 in 10 of the 22 edited versions of this file we could read. “Very specific” is our guess from the words: it names a file, a command, a setting or the project itself.

Keep what fits and drop the rest. Your version, ready for your agents.
Files
SKILL.md

/performance-review

Spawns the performance-reviewer agent to detect performance anti-patterns in your code changes.

Steps

  1. Gather context — detect the scope of changes to review:
    • If arguments are provided (file paths or PR number), use those as scope
    • Otherwise, use git diff to determine what changed
    • Identify files touching database queries, API endpoints, or data processing
  2. Spawn the agent — use the Task tool:
    Task tool with subagent_type="performance-reviewer"
    Pass in the prompt:
    • The diff output and list of changed files
    • The project's database ORM and framework context
    • Any performance budgets or constraints from project rules
  3. Present findings — relay the agent's performance report:
    • Group by severity: CRITICAL > WARNING
    • Include specific code locations and estimated impact
    • Show recommended fixes with before/after examples
  4. Offer follow-up actions:
    • "Fix critical issues?" — apply recommended performance fixes
    • "Add benchmarks?" — create performance tests for flagged code paths
    • "Review again?" — re-run after changes

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What did you use it for? e.g. Reviewing pull requests in a Rails app

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