Agent skill

script-audit

Audit third-party scripts on the storefront for performance and security impact

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Forks 31

Install this agent skill to your Project

npx add-skill https://github.com/majiayu000/claude-skill-registry/tree/main/skills/other/other/script-audit

SKILL.md

You are helping the team audit third-party scripts running on the Jocko Fuel storefront.

Follow these steps:

Step 1: Identify Scripts

Delegate to the script-investigator agent to catalog all third-party scripts on the target page(s). For each script, capture:

  • Source domain (e.g., googletagmanager.com, klaviyo.com)
  • Purpose (analytics, marketing, chat widget, A/B testing, etc.)
  • Load method (sync, async, defer)
  • File size (KB transferred)

Ask the user which page to audit, or default to the homepage.

Step 2: Analyze Performance Impact

For each script, delegate to the performance-auditor agent to measure:

  • Load time contribution (ms added to page load)
  • Main thread blocking time (ms of main thread occupied)
  • Network requests triggered (cascading requests from the script)
  • Total resource footprint (KB of JS, CSS, images loaded)

Rank scripts by total performance impact (highest impact first).

Step 3: Check Security Concerns

Delegate to the script-investigator agent to evaluate:

  • Are scripts loaded over HTTPS?
  • Do any scripts have known vulnerabilities?
  • Are there scripts from unfamiliar or untrusted domains?
  • Do any scripts access sensitive data (cookies, form inputs)?
  • Are Content Security Policy headers properly configured?

Step 4: Generate Recommendations

For each script, recommend one of:

  • Keep: Essential, well-optimized, no concerns
  • Optimize: Needed but can be deferred, async-loaded, or version-updated
  • Review: Purpose unclear or redundant with another script
  • Remove: Unused, high-impact, or security risk

Present as a table with script name, purpose, impact score, security risk, and recommendation.

Error Handling

  • If the page uses a consent manager that blocks scripts, note which scripts load before/after consent
  • If script sources are obfuscated, flag them for manual review
  • If performance measurement tools are unavailable, provide qualitative assessment based on script analysis

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