skill-creator
Create new skills, modify and improve existing skills, and measure skill performance. Use when users want to create a skill from scratch, update or optimize an existing skill, run evals to test a skill, benchmark skill performance with variance analysis, or optimize a skill's description for better triggering accuracy.
93
92%
Does it follow best practices?
Impact
Pending
No eval scenarios have been run
Advisory
Suggest reviewing before use
Security
2 findings — 2 medium severity. This skill can be installed but you should review these findings before use.
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: 0.80). Yes — the SKILL.md "Prior Art Research" section explicitly tells the agent to WebFetch/WebSearch public sites (e.g., skills.sh, GitHub, npm/PyPI, official API docs) and to clone/read public MCP servers, meaning the agent will ingest and act on untrusted, user-generated web content as part of its workflow and that content can influence subsequent decisions and tool use.
W012: Unverifiable external dependency detected (runtime URL that controls agent)
What this means
The skill fetches instructions or code from an external URL at runtime, and the fetched content directly controls the agent’s prompts or executes code. This dynamic dependency allows the external source to modify the agent’s behavior without any changes to the skill itself.
Why it was flagged
Potentially malicious external URL detected (high risk: 0.80). The SKILL explicitly instructs fetching external guidance at runtime—“you SHOULD retrieve it before you create or update any skills” pointing to https://platform.claude.com/docs/en/agents-and-tools/agent-skills/best-practices.md—so this external document would be loaded into the agent context and could directly control prompts/instructions.
- Repository
- daymade/claude-code-skills
- Commit
392d34c
- Audited
- Security analysis
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.