setup-web-tests
Set up Python test environment in Claude Code for web where flox is unavailable. Use when you need to run backend tests and `uv sync` fails due to Python version mismatch.
65
78%
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Medium
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tessl review fix ./.agents/skills/setup-web-tests/SKILL.mdSecurity
1 medium severity finding. This skill can be installed but you should review these findings before use.
W013: Attempt to modify system services in skill instructions.
What this means
The skill prompts the agent to compromise the security or integrity of the user’s machine by modifying system-level services or configurations, such as obtaining elevated privileges, altering startup scripts, or changing system-wide settings.
Why it was flagged
The skill explicitly instructs use of sudo to append entries to /etc/hosts and to run apt-get to install system packages, which modify system files and require elevated privileges.
Low
Low-risk findings.
1 low severity finding. Worth noting, but not necessarily harmful.
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 setup script fetches release metadata and downloads a Python tarball at runtime from the GitHub Releases API (https://api.github.com/repos/astral-sh/python-build-standalone/releases/latest) and then executes the fetched Python binary, which is remote code execution from an external URL.
- Repository
- PostHog/posthog
- Commit
06292db
- Audited
- Security analysis
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