skills/google/capsem/build-images/Gen Agent Trust Hub

build-images

Pass

Audited by Gen Agent Trust Hub on Sep 26, 2026

Risk Level: SAFECOMMAND_EXECUTIONEXTERNAL_DOWNLOADSINDIRECT_PROMPT_INJECTION
Full Analysis
  • Command Execution: The skill uses just recipes and shell hooks (build.sh) to automate the VM image construction process. These tools are used to build rootfs and kernel components, with instructions emphasizing the use of stable system paths and avoiding mutable installers.
  • External Resource Acquisition: The system fetches components from standard package registries (APT, NPM, and PyPI) and official binary archives for tools like Ollama and Claude. It specifically recommends using digest-bound archives and avoiding unverified remote scripts to ensure build integrity.
  • Indirect Prompt Injection Surface: The build pipeline ingests configuration files and scripts from profile directories. 1. Ingestion points: config/profiles/ files. 2. Boundary markers: capsem-admin validation rules. 3. Capability inventory: Docker builds and shell execution. 4. Sanitization: Pydantic models in src/capsem/builder/models.py. The skill mitigates risks by requiring explicit materialization steps and suggesting black-box verification of the resulting images.
Audit Metadata
Risk Level
SAFE
Analyzed
Sep 26, 2026, 06:45 PM