rex

Pass

Audited by Gen Agent Trust Hub on May 4, 2026

Risk Level: SAFEEXTERNAL_DOWNLOADSCOMMAND_EXECUTIONPROMPT_INJECTION
Full Analysis
  • [EXTERNAL_DOWNLOADS]: The skill installs the @membranehq/cli package from the public npm registry. This is a legitimate utility provided by the skill's author to enable interaction with the Membrane platform.
  • [COMMAND_EXECUTION]: The skill relies on executing shell commands via the membrane CLI to perform core functions such as logging in, connecting to services, and running data actions.
  • [PROMPT_INJECTION]: The skill exhibits an indirect prompt injection surface by incorporating user-controlled input into CLI command arguments.
  • Ingestion points: User-provided strings are interpolated into the --intent parameter of membrane action list and the --input parameter of membrane action run in SKILL.md.
  • Boundary markers: No delimiters or protective warnings are used to isolate user data from the command structure.
  • Capability inventory: The skill can execute and create remote actions using the membrane action run and membrane action create commands documented in SKILL.md.
  • Sanitization: The instructions do not define any sanitization or validation steps for external content before processing.
  • [SAFE]: The skill follows security best practices by delegating authentication to the Membrane platform via a browser-based flow, ensuring that API keys and tokens are managed securely and not stored in plain text by the agent.
Audit Metadata
Risk Level
SAFE
Analyzed
May 4, 2026, 02:54 PM