The Agent Skills Directory

[INDIRECT_PROMPT_INJECTION]: The skill includes a feature to fetch live documentation from official Apple developer pages, which introduces a standard surface for indirect prompt injection via external data ingestion.
Ingestion points: The SKILL.md (Branch C) and references/hig-sitemap.md files provide a directory of official developer.apple.com URLs for the agent to retrieve live updates.
Boundary markers: The skill provides instructional guidance in SKILL.md to paraphrase content rather than reproduce it verbatim, which acts as a qualitative boundary, though no technical delimiters are enforced on the fetched data.
Capability inventory: The skill leverages common agent tools such as WebFetch or browser-based navigation to access external documentation.
Sanitization: The skill relies on the trusted nature of the official Apple documentation source and the agent's internal safety filters for sanitization.
[EXTERNAL_DOWNLOADS]: The README.md provides installation instructions using the npx skills utility and the claude plugin system. These are standard platform-supported methods for skill and plugin management. The external resources referenced are official repositories and tools associated with the skill's author and the supported platforms.

apple-design