# Notice Impeccable Copyright 2025-2026 Paul Bakaus ## Detection Engine The anti-pattern detection engine (`@impeccable/detect`) is a separate package licensed under the Business Source License 1.1 (BSL-1.1), not Apache 2.0. - Package: https://www.npmjs.com/package/@impeccable/detect - Source: https://github.com/pbakaus/impeccable-detect - License: BSL-1.1 (free for individuals, open source projects, and organizations with 5 or fewer people or under $1M ARR; commercial license required otherwise) Installing this package pulls in `@impeccable/detect` as a dependency. ## Anthropic frontend-design Skill The `impeccable` skill in this project builds on Anthropic's original frontend-design skill. **Original work:** https://github.com/anthropics/skills/tree/main/skills/frontend-design **Original license:** Apache License 2.0 **Copyright:** 2025 Anthropic, PBC This project extends the original with: - 7 domain-specific reference files (typography, color-and-contrast, spatial-design, motion-design, interaction-design, responsive-design, ux-writing) - 22 steering commands - Expanded patterns and anti-patterns