logo✓ Pass

SKILL.md Content

---
name: logo
description: Generate a production-grade logo (primary brand mark). Returns RGBA PNG master + SVG vector + monochrome variant. Route by text-length and per-model ceiling. Strong-text models render multi-word and even paragraph-length wordmarks reliably; weak-text models composite SVG type post-render.
trigger_phrases: [generate a logo, make a logo, design a logo, brand mark, logo for my app]
---

# Logo generation

## Spec
- **Master:** 1024×1024 RGBA PNG, transparent background, subject centered in 80% safe zone
- **Vector:** SVG, ≤200 paths, fixed viewBox, SVGO optimized
- **Monochrome:** 1-color mono variant (auto-derived via luminance threshold or separate generation)
- **Wordmark routing — model-specific, not blanket:**
  - **Paragraph-length OK:** `gpt-image-2`, `gemini-3-pro-image-preview` (Nano Banana Pro), `gpt-image-1.5`. Include the wordmark in the prompt; composite stays safer for pixel-exact UI copy.
  - **3–10 words reliable:** `ideogram-3` / `ideogram-3-turbo`, `gemini-3.1-flash-image-preview` (Nano Banana 2), `gpt-image-1`, `flux-2` family.
  - **≤3 words / ≤25 chars:** Imagen 4 family, Recraft V4.
  - **Composite always:** Flux 1.x, Flux Schnell, SDXL, SD 1.5, Mystic, Pollinations, original Nano Banana 1.

## Routing by intent
| text in mark? | vector needed? | primary | fallback |
|---|---|---|---|
| none | yes | Recraft V4 (native SVG) | `gpt-image-1.5` → BiRefNet → vtracer |
| none | no | `gpt-image-1.5` (`background:"transparent"`) | Ideogram 3 Turbo (dedicated `/v1/ideogram-v3/generate-transparent` endpoint, `rendering_speed:"TURBO"`) |
| 1–3 words | yes | Ideogram 3 → raster 1024 → BiRefNet → K-means(6) → vtracer → SVGO | Recraft V4 |
| 1–3 words | no | Ideogram 3 | `gpt-image-1.5` |
| 4–10 words | yes | `flux-2` / `gpt-image-2` → raster 1024 → BiRefNet → K-means(6) → vtracer → SVGO | Nano Banana Pro |
| 4–10 words | no | `flux-2` family or `gpt-image-2` (note: gpt-image-2 has no native RGBA — matte after) | Nano Banana Pro |
| paragraph | any | Nano Banana Pro or `gpt-image-2`; composite is still safer for pixel-exact UI copy | composite via `BrandBundle.typography` |

## Dialect-ready prompt scaffold
```
A [flat vector | isometric | brutalist | soft gradient] logo mark representing [SUBJECT, concrete noun phrase].
Centered composition. Clean silhouette, strong tight outline, high contrast.
Palette: [#hex, #hex, #hex] strictly.
["WORDMARK TEXT" in sans-serif, tight tracking | text-free mark].
Solid pure white background. Square 1:1 aspect. 1024x1024.
```

For SD: prepend `masterpiece, vector logo, flat design, minimalist, 8k, `.
For Flux: drop all quality modifiers; be concrete about subject and palette.

## Post-process
1. BiRefNet matte (or Recraft SVG → rasterize at 1024).
2. Checkerboard-pattern probe: reject if failed.
3. If SVG needed: K-means 6-color → `vtracer --mode polygon` → SVGO (conservative preset).
4. Monochrome variant: greyscale → Otsu threshold → tint brand black.
5. Validate: tight-bbox ≤ 80% safe zone, palette ΔE2000 ≤ 10, OCR matches wordmark if present.

## Failure → action
- Checkerboard → route to `gpt-image-1` (different provider).
- Wordmark garbled → regenerate mark text-free, composite SVG type.
- Palette drift → Recraft `controls.colors` or recolor post.
- >200 SVG paths → regenerate with "simpler geometry" or raise K-means color count.

## Output
```
logo/
├── master.png        # 1024² RGBA
├── mark.svg          # vector
├── mark-mono.svg     # monochrome
├── mark-inverse.png  # dark-mode variant
└── meta.json         # provenance + validations
```

License

Declared license: MIT

MIT License

Copyright (c) 2026 MohamedAbdallah-14

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
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

View the license in the source repository — the version published there is authoritative.