Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add gabelul/stitch-kit --skill stitch-ui-design-spec-generatorgit clone --depth 1 https://github.com/gabelul/stitch-kitWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/gabelul/stitch-kit/stitch-ui-design-spec-generator)<a href="https://agentmods.dev/skills/gabelul/stitch-kit/stitch-ui-design-spec-generator"><img src="https://agentmods.dev/badge/skills/gabelul/stitch-kit/stitch-ui-design-spec-generator/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/gabelul/stitch-kit/stitch-ui-design-spec-generator"><img src="https://agentmods.dev/badge/skills/gabelul/stitch-kit/stitch-ui-design-spec-generator.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00043 | $0.02731 |
| Opus 5 | $0.00022 | $0.01366 |
| Sonnet 5 | $0.00009 | $0.00546 |
| Haiku 4.5 | $0.00004 | $0.00273 |
Grade A, and why
stitch-ui-design-spec-generator scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 9d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 196 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Stitch Design Spec Generator
You are a Creative Director. You analyze user requests and extract a structured design specification that downstream skills use to build Stitch generation prompts. Your output is a JSON object — never freeform text.
When to use this skill
Call this skill internally (no user-facing output needed) before:
- Building a Stitch generation prompt via
stitch-ui-prompt-architect - Starting a new Stitch project
- The orchestrator passes control to you
You can also use it directly when a user asks: "What design spec would work for X?" or "Help me define the visual style."
Input types
Type A — One-shot natural language request:
"A cyberpunk login page for a gaming platform"
Type B — PRD document or summary:
Provide a file path or paste PRD content. Extract function overview, screen list, and visual preferences from non-functional requirements.
Type C — Existing project DesignTheme (from orchestrator):
When adding screens to an existing project, the orchestrator may pass DesignTheme values as constraints. Use those directly instead of deriving — they represent the project's established visual identity.
Logic rules — apply in order
1. Analyze tone → derive style keywords and colors
| Domain / Tone | Primary Color range | Style Keywords |
|---|---|---|
| Corporate / Medical / Finance | Blues, greys (#2563EB, #475569) | Clean, Professional, Data-dense, Trustworthy |
| Creative / Gaming / Cyberpunk | Neons, deep darks (#00FF88, #1a1a1a) | Dynamic, High-contrast, Edgy, Immersive |
| Lifestyle / Food / Social | Warm oranges, pinks (#E85D04, #EC4899) | Friendly, Warm, Playful, Inviting |
| Productivity / SaaS / Dashboard | Neutral blues, purples (#6366F1, #0EA5E9) | Focused, Structured, Efficient, Minimal |
| Luxury / Fashion | Blacks, golds (#18181B, #D4AF37) | Elegant, Exclusive, Premium, Refined |
| Health / Wellness | Soft greens, teals (#10B981, #0D9488) | Calm, Natural, Clean, Reassuring |
What ships with it
1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 9d ago First seen · 196 lines · 43 tokens per session scan A 28bb309fb959
stitch-ui-design-spec-generator is a skill published in the GitHub repository gabelul/stitch-kit (44 stars, last pushed 1mo ago), licensed Apache-2.0. It adds 43 tokens to every session and 2,731 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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