Content
65%Reviews the quality of instructions and guidance provided to agents. Good implementation is clear, handles edge cases, and produces reliable results.
The body is a highly actionable XSS/HTMLi cookbook with concrete payloads and a clear phased workflow, but it is verbose and redundant and keeps all reference material inline rather than splitting it across bundle files.
Suggestions
Move the large payload catalog and filter-bypass encodings into a references file (e.g. references/payloads.md) and keep SKILL.md as a concise workflow overview with one-level-deep links, which would lift both conciseness and progressive_disclosure.
De-duplicate the cookie/session-stealing payloads that recur in Phase 2, Quick Reference, and Examples, and trim the conceptual Stored/Reflected/DOM "Indicators" lists since Claude already knows XSS taxonomy.
Insert explicit validation checkpoints between phases (e.g. "Confirm payload executed in the browser console before moving to exploitation") to convert the sequential phases into a verified workflow.
| Dimension | Reasoning | Score |
|---|---|---|
Conciseness | Mostly actionable payload reference material, but ~500 lines with redundancy (cookie/session-stealing payloads repeat across Phase 2, Quick Reference, and Examples) and conceptual padding like the Stored/Reflected/DOM "Indicators" lists that Claude already knows. | 2 / 3 |
Actionability | Provides concrete, copy-paste-ready payloads, real HTTP requests, URL-encoded attack URLs, and executable JavaScript across every phase — fully actionable rather than described. | 3 / 3 |
Workflow Clarity | A clear Phase 1–6 sequence plus a detection checklist and troubleshooting feedback table exists, but there are no explicit validation/verification gates between phases for a task with destructive potential, capping this at 2 per the rubric. | 2 / 3 |
Progressive Disclosure | No bundle files exist and the entire payload/bypass reference is inline in one ~500-line SKILL.md; well-organized by section, but content that would be better split into reference files (e.g. a payloads or bypass-techniques reference) is not separated. | 2 / 3 |
Total | 9 / 12 Passed |