The Agent Skills Directory

[COMMAND_EXECUTION]: The skill instructs the agent to execute multiple shell commands using the 21st CLI to manage the UI development lifecycle.
Commands include: 21st init --design-context, 21st search, 21st usage, 21st generate, and 21st review.
[EXTERNAL_DOWNLOADS]: The workflow involves fetching external UI components and inspiration via 21st search and 21st get commands.
These tools interact with the 21st-dev ecosystem to retrieve component data and implementation patterns.
[INDIRECT_PROMPT_INJECTION]: The skill processes untrusted content from external search results and local project configuration files which may influence the agent's implementation decisions.
Ingestion points: Reads project configuration in .21st/design.json and .21st/DESIGN.md, and parses results from the 21st search command.
Boundary markers: None identified in the instructions to separate untrusted data from system instructions.
Capability inventory: Includes shell command execution (21st CLI) and file system writes (storing design decisions).
Sanitization: None identified; the agent is instructed to trust explicit project facts and search results.

21st-ui-build