Impeccable
Design vocabulary and commands that make AI harnesses better at visual design.
Same as above.
Free. Helps you deliver work that does not look AI-generated.
Apache-2.0 (LICENSE file and README)
Yes - Apache-2.0, no restrictions found; it is a design skill/CLI for AI coding agents, so it is used while building client work rather than hosted.
Active (pushed 2026-10-07). Needs an AI coding agent (Claude Code, Copilot etc.) for the LLM commands; the 59 deterministic detector rules run with no LLM and no API key. README says it started from Anthropic's frontend-design skill.
You (the builder)
Same as above.
none found (impeccable.style shows no plans or prices)
None named