youtube-tools
Fetch transcripts and create structured watching guides / summaries for YouTube videos. Use when the user asks to (1) get, fetch, extract, or download a transcript or captions from a YouTube video URL, or (2) summarize, create a watching guide, or produce a structured summary of a YouTube video. Trigger on youtube.com/watch, youtu.be, or youtube.com/shorts links.
95
93%
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: 0.90). The SKILL.md explicitly instructs the agent to fetch and analyze transcripts from arbitrary YouTube URLs using "npx defuddle parse <youtube-url> --markdown", which returns video descriptions and timestamped, user-generated transcript segments from the public web that the agent must read and use to drive its summarization/segmentation decisions.
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: 0.90). The skill explicitly instructs running "npx defuddle parse <youtube-url> --markdown" at runtime, which fetches and executes code from the npm registry (e.g., https://registry.npmjs.org for the defuddle package), so the skill relies on and executes remote code fetched at runtime.
- Repository
- ceshine/ceshine-agent-skills
- Commit
348c2c1
- Audited
- Security analysis
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