Summarize or extract text/transcripts from URLs, podcasts, and local files (great fallback for “transcribe this YouTube/video”).
79
76%
Does it follow best practices?
Impact
87%
2.63xAverage score across 3 eval scenarios
Advisory
Suggest reviewing before use
Optimize this skill with Tessl
npx tessl skill review --optimize ./nanobot/skills/summarize/SKILL.mdSecurity
2 findings — 2 medium severity. 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: 0.90). This skill explicitly fetches and ingests content from public URLs and YouTube (see SKILL.md "Summarize" and the quick-start examples), meaning untrusted user-generated third-party content is read and used to produce summaries that could embed instructions influencing the agent's subsequent outputs or actions.
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.
Potentially malicious external URL detected (high risk: 0.90). The summarize skill fetches arbitrary user-supplied URLs at runtime (e.g., https://example.com and https://youtu.be/dQw4w9WgXcQ) and injects the fetched content into the model prompt/context to produce summaries, meaning remote-hosted content can directly control agent input.
04a41e3
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