Third-Party Notices¶
muriel incorporates work from the projects listed below. Their license terms are reproduced in full as required.
diagram-design¶
The layout proportions and conventions for the layer_stack, pyramid, and
swimlane diagram generators (muriel/tools/diagrams/layer_stack.py,
muriel/tools/diagrams/pyramid.py, muriel/tools/diagrams/swimlane.py) —
band/tier/lane heights, the linear-taper and proportional-width rules, lane
dividers and handoff emphasis, label placement, and the single-focal-accent
convention — are adapted from the diagram-design Claude Code skill.
- Source: https://github.com/cathrynlavery/diagram-design
- Adapted: 2026-05 (diagram-design relicensed to MIT)
muriel's own contribution is the deterministic Python generators, the epistemic-precondition / anti-prescription gate on each diagram, the 8:1 contrast floor (stricter than the source's WCAG AA), and integration with muriel's brand tokens. The source's typefaces and colour system were not adopted.
MIT License
Copyright (c) 2025 Cathryn Lavery
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
ui-ux-pro-max corpus¶
The CSV reference data under muriel/uipromax/data/ (colors.csv,
typography.csv, ui-reasoning.csv, ux-guidelines.csv, styles.csv,
charts.csv, icons.csv) is a verbatim port of the ui-ux-pro-max skill's
data files — product-type colour sets, font pairings, UI-reasoning rules, UX
guidelines, design styles, chart taxonomy, and an icon index.
- Source: https://github.com/nextlevelbuilder/ui-ux-pro-max-skill
- Via: https://github.com/All-The-Vibes/ATV-Design (
skills/ui-ux-pro-max/) - Adapted: 2026-06 (both upstreams MIT)
muriel's own contribution is the accessor layer (muriel/uipromax/__init__.py)
and the 8:1 contrast re-gate: the colour sets target WCAG 3:1/AA, so each is
measured against muriel's universal 8:1 floor via muriel.contrast. The data
itself is unchanged; muriel adds no colours. The source palettes' interactive
pairs (On Primary, On Accent, destructive, muted-on-muted) are reported as
sub-8:1 and not adopted as compliant — only the body-text pairs that clear
8:1 are surfaced as muriel starting points. A copy of the upstream MIT license
also ships at muriel/uipromax/LICENSE.txt.
MIT License
Copyright (c) 2024 Next Level Builder
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
emil-design-eng-inspired (motion principles)¶
The motion-quality axes added to muriel/motion.py (compositor-safe property
set, easing-by-direction, entrance scale floor) and to
plugins/muriel/skills/compose/channels/polish.md (rules 18–22) are paraphrased
from the emil-design-eng-inspired skill — itself MIT-licensed original prose
that the ATV-Design authors wrote as a clean-room paraphrase of Emil Kowalski's
emil-design-eng skill.
- Source: https://github.com/All-The-Vibes/ATV-Design (
skills/emil-design-eng-inspired/) - Lineage: paraphrases https://github.com/emilkowalski/skill (MIT as of 2026-06-21; it carried no license when muriel first adapted via ATV-Design's clean-room paraphrase)
- Adapted: 2026-06 (ATV-Design MIT)
muriel's own contribution is the programmatic enforcement (validate_properties,
easing_for, validate_scale) and the integration with muriel's existing
polish rules. muriel deliberately does not adopt the source's duration
bands (100–500 ms) — they fall in muriel.motion's uncanny zone, where the
forced utility (≤ 100 ms) / cinematic (≥ 1500 ms) binary overrides them — and
keeps its own tuned 0.96 press-scale value over the source's 0.97.
MIT License
Copyright (c) 2026 atv-design contributors
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
vibecoded-design-tells (devibe rules)¶
The rule table in muriel/devibe.py — the design-tell catalogue (shadcn
defaults, AI-purple, gradient text, the cream + serif + sage "tasteful default",
neon glow, emoji-as-icons, the hero + three-card skeleton) and their regex
signatures — is derived from the vibecoded-design-tells project: a
Reddit-mined ranking of the visual tells of AI-built sites (3.2M posts / 3,033
on-topic comments across 47 subreddits), with a standalone scanner
(skill/scripts/devibe_scan.py) and catalogue (skill/references/tells.md).
- Source: https://github.com/JCarterJohnson/vibecoded-design-tells
- Adapted: 2026-06 (MIT)
muriel's own contributions: (1) the data-source severities are re-ranked to
muriel's info/warn/error triple, with the cream + serif + sage combination
elevated to error because it is the look muriel — and Claude's house style
generally — is most likely to emit on autopilot; (2) an 8:1 contrast
cross-check the source scanner has no equivalent of — colour tells that capture
a concrete hex are measured against muriel's 8:1 floor via muriel.contrast on
muriel's two canonical backgrounds (#ffffff, #0a0a0f), so a default colour
that also fails accessibility is reported as such; (3) integration as a critique
gate (muriel/critique.py, check 5) on HTML artifacts. muriel deliberately does
not vendor the project's harvested Reddit text or quote banks — those are
public Reddit content belonging to their authors; only the rule logic is derived.
MIT License
Copyright (c) 2026 Carter Johnson
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
baoyu-infographic (dense-modules module vocabulary)¶
The module vocabulary and high-density-guide recipe in
plugins/muriel/skills/compose/channels/infographics.md — the seven typed
module archetypes (Option Array, Scale/Gauge, Anatomy Callout, Use-Case
Matrix, Diagnostic Checklist, Pitfall Panel, TL;DR Block), the
every-module-carries-concrete-data density rule, and the text-placement
conventions (module-count subtitle, badge-framed module headers, data values
oversized in the accent color) — are adapted from the dense-modules layout
definition in the baoyu-infographic skill of the baoyu-skills collection.
- Source: https://github.com/JimLiu/baoyu-skills (
skills/baoyu-infographic/references/layouts/dense-modules.md) - Adapted: 2026-07 (MIT)
muriel's own contribution is the re-cast from prompt spec to content contract — each module declares structured-input minimums (item counts, required numerics, stated consequences) that a deterministic SVG panel builder can refuse to render below — plus genre-neutral renamings of the source's buying-guide-specific module names. Two source rules are deliberately not adopted: the shrink-text-and-eliminate-whitespace density rule (it conflicts with muriel's 18px type floor and 8:1 contrast floor — density comes from module count and data specificity instead), and emoji quality indicators (muriel renders drawn ✓/✗ glyphs). The source's raster generation pipeline (prompt-to-image via image-gen backends) is not used in any form — muriel's lane is deterministic SVG.
MIT License
Copyright (c) 2026 Jim Liu
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.