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xurl

X/Twitter via xurl CLI: raw post search, posting, DM, media.

62

Quality

75%

Does it follow best practices?

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SecuritybySnyk

Low

Low-risk findings worth noting

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tessl review fix ./skills/social-media/xurl/SKILL.md
SKILL.md
Quality
Evals
Security

Low

Low-risk findings.

2 low severity findings. Worth noting, but not necessarily harmful.

Low

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

The required workflow ingests outsider-authored free text from X content at runtime when it runs `xurl search ...` and returns raw post objects (IDs, authors, full text), and also when it reads timelines/mentions (e.g., `xurl timeline`, `xurl mentions`) via the X API.

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Low

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

The Installation section instructs running a remote installer via curl piped to bash that would fetch and execute code from https://raw.githubusercontent.com/xdevplatform/xurl/main/install.sh during setup, which is remote code execution at runtime.

Repository
NousResearch/hermes-agent
Audited
Security analysis
Snyk

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