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Independent project, not affiliated with Anthropic
levnikolaevich avatar

Ln 653 Runtime Performance Auditor

levnikolaevich/claude-code-skills
371 installs533 stars
Summary

This auditor catches runtime performance killers in async codebases: blocking IO calls inside async functions, time.sleep instead of asyncio.sleep, string concatenation in loops, and unnecessary list allocations where generators would work. It scans your code with two-layer detection (candidate then verification), assigns severity based on whether violations hit hot paths like API handlers, and outputs a scored markdown report with specific file locations and effort estimates. Built for the L3 audit worker framework, so it integrates with hex-graph MCP tools when available but falls back to grep and bash if needed. The scoring penalizes HIGH findings harder than MEDIUM or LOW, giving you a compliance score out of 10 for the runtime performance category.

Install to Claude Code

npx -y skills add levnikolaevich/claude-code-skills --skill ln-653-runtime-performance-auditor --agent claude-code

Installs into .claude/skills of the current project.

CodeRabbit
CodeRabbit
AI writes the code. CodeRabbit catches the slop.
Try For Free →
Lid closed, agents working
Lid closed, agents working
Keeps your Mac awake while Claude Code, Codex or Cursor works. Lets it sleep when they are done.
Try free for 7 days →
Block distraction from your iPhone for freeBlock distraction from your iPhone for free
Block distraction from your iPhone for free
Block distracting apps from your iPhone permanently without a 3rd party app. Free and open source.
Block now (100% free) →
Granola, the best AI meeting recorder
Granola, the best AI meeting recorder
Notes, actions and memory. Without a meeting bot. First month 100% off.
Download for free →
belt - the only tool your agent needs
belt - the only tool your agent needs
belt cli automatically finds the best tools and skills for your agent. image, video, music, tts...
one prompt install →
Open Steps
Open Steps
Free an open-source skills that make AI coding agents easier to understand, verify, and control.
Download for free →
AppSignal
AppSignal
Monitor with ease. Code with confidence.
Start Free Trial →
Agent, connect blockchain
Agent, connect blockchain
Connect your Claude agent to live crypto prices and trading routes via 1inch
Get the MCP →
CodeRabbit
CodeRabbit
AI writes the code. CodeRabbit catches the slop.
Try For Free →
Lid closed, agents working
Lid closed, agents working
Keeps your Mac awake while Claude Code, Codex or Cursor works. Lets it sleep when they are done.
Try free for 7 days →
Block distraction from your iPhone for freeBlock distraction from your iPhone for free
Block distraction from your iPhone for free
Block distracting apps from your iPhone permanently without a 3rd party app. Free and open source.
Block now (100% free) →
Granola, the best AI meeting recorder
Granola, the best AI meeting recorder
Notes, actions and memory. Without a meeting bot. First month 100% off.
Download for free →
belt - the only tool your agent needs
belt - the only tool your agent needs
belt cli automatically finds the best tools and skills for your agent. image, video, music, tts...
one prompt install →
Open Steps
Open Steps
Free an open-source skills that make AI coding agents easier to understand, verify, and control.
Download for free →
AppSignal
AppSignal
Monitor with ease. Code with confidence.
Start Free Trial →
Agent, connect blockchain
Agent, connect blockchain
Connect your Claude agent to live crypto prices and trading routes via 1inch
Get the MCP →
Files
SKILL.md

Select a file.

Featured
CodeRabbit
CodeRabbit
AI writes the code. CodeRabbit catches the slop.
Try For Free →
Lid closed, agents working
Lid closed, agents working
Keeps your Mac awake while Claude Code, Codex or Cursor works. Lets it sleep when they are done.
Try free for 7 days →
Block distraction from your iPhone for freeBlock distraction from your iPhone for free
Block distraction from your iPhone for free
Block distracting apps from your iPhone permanently without a 3rd party app. Free and open source.
Block now (100% free) →
Granola, the best AI meeting recorder
Granola, the best AI meeting recorder
Notes, actions and memory. Without a meeting bot. First month 100% off.
Download for free →
belt - the only tool your agent needs
belt - the only tool your agent needs
belt cli automatically finds the best tools and skills for your agent. image, video, music, tts...
one prompt install →
Open Steps
Open Steps
Free an open-source skills that make AI coding agents easier to understand, verify, and control.
Download for free →
AppSignal
AppSignal
Monitor with ease. Code with confidence.
Start Free Trial →
Agent, connect blockchain
Agent, connect blockchain
Connect your Claude agent to live crypto prices and trading routes via 1inch
Get the MCP →
Categories
Debugging
First SeenJun 3, 2026
View on GitHub

More from levnikolaevich/claude-code-skills

All 128 skills →
  • Ln 652 Transaction Correctness Auditor370
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  • Ln 520 Test Planner360
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  • Ln 521 Test Researcher356
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  • Ln 625 Dependencies Auditor324
  • Ln 610 Docs Auditor316
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  • Ln 628 Concurrency Auditor316
  • Ln 623 Code Principles Auditor315
  • Ln 622 Build Auditor313
  • Ln 629 Lifecycle Auditor313
  • Ln 644 Dependency Graph Auditor302
  • Ln 641 Pattern Analyzer295
  • Ln 642 Layer Boundary Auditor293
  • Ln 645 Open Source Replacer282
  • Ln 613 Code Comments Auditor259

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