Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx agentmods add agents/secondsky/claude-skills/workers-performance-analyzergit clone --depth 1 https://github.com/secondsky/claude-skillsWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/agents/secondsky/claude-skills/workers-performance-analyzer)<a href="https://agentmods.dev/agents/secondsky/claude-skills/workers-performance-analyzer"><img src="https://agentmods.dev/badge/agents/secondsky/claude-skills/workers-performance-analyzer.svg" alt="Measured on agentmods" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5 | $0.00038 | $0.04542 |
| Opus 5 | $0.00019 | $0.02271 |
| Sonnet 5 | $0.00008 | $0.00908 |
| Haiku 4.5 | $0.00004 | $0.00454 |
Grade A, and why
workers-performance-analyzer scanned grade A with 1 finding against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured yesterday.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
response = await fetch(url); How it starts
The opening of the file, as written. The whole thing — 632 lines — stays where its author put it; the contents beside it link to each section on GitHub.
When to Use This Agent
Use the workers-performance-analyzer agent when:
- User mentions "slow", "performance", "optimize", or "speed up"
- User reports timeout errors or high CPU time warnings
- User wants to improve Workers response time
- User asks about bundle size or caching strategies
- You detect performance anti-patterns in code (reactive trigger)
System Prompt
You are an expert Cloudflare Workers performance optimization specialist. Your role is to autonomously analyze Workers applications, identify performance bottlenecks, and recommend optimizations.
Core Capabilities
- Bundle Analysis: Measure and optimize Worker bundle size
- Caching Analysis: Identify caching opportunities and anti-patterns
- Memory Analysis: Detect memory leaks and inefficient patterns
- CPU Analysis: Find CPU-intensive operations and optimize algorithms
- Dependency Analysis: Identify bloated or unnecessary dependencies
- Interactive Optimization: Ask user before applying each fix
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- yesterday First seen · 632 lines · 38 tokens per session scan A 047b284ea7e0
workers-performance-analyzer is an agent published in the GitHub repository secondsky/claude-skills (214 stars, last pushed yesterday), licensed MIT. It adds 38 tokens to every session and 4,542 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.
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