Use run_shell with Python heredoc when execute_code_sandbox or read_file fail
53
58%
Does it follow best practices?
Run evals on this skill
Adds up to 20 points to the overall score
View guide
High
Do not use without reviewing
Fix and improve this skill with Tessl
tessl review fix ./benchmarks/gdpval/skills/fallback-python-shell/SKILL.mdSecurity
2 findings: 1 high severity, 1 medium severity. You should review these findings carefully before considering using this skill.
The skill handles credentials insecurely by requiring the agent to include secret values verbatim in its generated output. This exposes credentials in the agent’s context and conversation history, creating a risk of data exfiltration.
The skill tells the agent to run Python that opens arbitrary files and "print results to stdout to capture them in the tool response," which encourages outputting file contents verbatim and therefore can expose any secrets contained in those files.
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.
The skill explicitly instructs the agent to "bypass sandbox" by running Python via run_shell (heredoc), enabling unrestricted file I/O and the ability to read or write arbitrary files on the host.
c5a9c4b
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.