The Agent Skills Directory

[SAFE]: The skill implements professional design and measurement workflows without performing dangerous operations. The provided scripts are focused on image metadata inspection and proof generation.
[EXTERNAL_DOWNLOADS]: The skill requires the Pillow library via requirements.txt. Pillow is a standard and well-known image processing library, and its use here is consistent with the skill's primary purpose of analyzing thumbnail images.
[INDIRECT_PROMPT_INJECTION]: The skill processes potentially untrusted data including video titles and transcripts to generate thumbnail concepts.
Ingestion points: Video metadata, transcripts, and source images provided by the user in SKILL.md and templates/thumbnail-brief.md.
Boundary markers: The instructions include clear warnings that the AI and preflight scripts cannot judge truthfulness or brand alignment, and it directs the user to ask clarifying questions rather than inventing facts.
Capability inventory: The skill is limited to reading image files and writing proof images to a local directory; it lacks network access or the ability to execute external system commands.
Sanitization: The thumbnail_preflight.py script performs file integrity and format checks on input images before processing them.

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