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
71%
Does it follow best practices?
Impact
Pending
No eval scenarios have been run
Advisory
Suggest reviewing before use
Optimize this skill with Tessl
npx tessl skill review --optimize ./skills/writing-skills/SKILL.mdSecurity
1 medium severity finding. This skill can be installed but you should review these findings before use.
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.
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.
a01bac9
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.