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writing-skills

Creates, edits, and tests Claude skill files (SKILL.md) using TDD methodology with baseline pressure testing and rationalization defense. Use when writing a new skill, modifying an existing skill, optimizing a skill description for discovery (CSO), testing whether a skill triggers correctly, or structuring skill documentation. Enforces RED-GREEN-REFACTOR for process documentation.

77

Quality

71%

Does it follow best practices?

Impact

Pending

No eval scenarios have been run

SecuritybySnyk

Advisory

Suggest reviewing before use

Optimize this skill with Tessl

npx tessl skill review --optimize ./skills/writing-skills/SKILL.md
SKILL.md
Quality
Evals
Security

Security

1 medium severity finding. This skill can be installed but you should review these findings before use.

Medium

W011: Third-party content exposure detected (indirect prompt injection risk)

What this means

The skill exposes the agent to untrusted, user-generated content from public third-party sources, creating a risk of indirect prompt injection. This includes browsing arbitrary URLs, reading social media posts or forum comments, and analyzing content from unknown websites.

Why it was flagged

Third-party content exposure detected (high risk: 0.75). The SKILL.md explicitly instructs the agent to install packages from npm/PyPI and pull from GitHub and to run/inspect scripts (see "Package dependencies" and "Runtime environment" / examples like "Install required package: pip install pypdf" and "pull from GitHub repositories"), which are public, user-generated third-party sources the agent may fetch and execute/read as part of its workflow, so untrusted content could influence actions.

Report incorrect finding
Repository
shousper/claude-kit
Audited
Security analysis
Snyk

Is this your skill?

If you maintain this skill, you can claim it as your own. Once claimed, you can manage eval scenarios, bundle related skills, attach documentation or rules, and ensure cross-agent compatibility.