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 WellApp-ai/Well --skill design-contextgit clone --depth 1 https://github.com/WellApp-ai/WellWrote 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/wellapp-ai/well/design-context)<a href="https://agentmods.dev/skills/wellapp-ai/well/design-context"><img src="https://agentmods.dev/badge/skills/wellapp-ai/well/design-context/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/wellapp-ai/well/design-context"><img src="https://agentmods.dev/badge/skills/wellapp-ai/well/design-context.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 | $0.00018 | $0.00616 |
| Opus 5.5 | $0.00007 | $0.00246 |
| Sonnet 5.5 | $0.00004 | $0.00123 |
| Haiku 4.5 | $0.00002 | $0.00062 |
Grade A, and why
design-context 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 1mo 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 — 109 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Design Context Skill
Ensures wireframes and UI decisions leverage existing patterns from the design system, Storybook, and codebase.
When to Use
- Before presenting wireframes (Ask mode DIVERGE)
- Before implementing UI changes (Agent mode)
- At every DIVERGE Loop to stay grounded in existing patterns
Instructions
Phase 1: Design System Check
Read the design system documentation:
Read /docs/design-system/components.md
Read /docs/design-system/spacing.md
Read /docs/design-system/colors.md (if color decisions needed)
Read /docs/design-system/interactions.md (if interaction patterns needed)
Note applicable:
- Design tokens (
h-13,px-4,gap-3) - Component patterns (Button variants, DataTable, Dialog)
- Spacing conventions (p-4 for cards, gap-6 for sections)
Phase 2: Storybook Patterns
Find existing component stories:
Glob **/*.stories.tsx
Identify:
- Components matching current wireframe needs
- Existing variants and props
- Documented states (loading, error, empty)
Key story locations:
/src/stories/- General component stories/features/*/components/*.stories.tsx- Feature-specific stories
Phase 3: Codebase Search
Search for similar UI patterns:
SemanticSearch "How is [pattern] implemented in the codebase?"
Look for:
- Similar features already built
- Reusable hooks and utilities
- Existing layout patterns
Phase 4: Library Documentation (Context7 MCP)
Query library docs for unfamiliar patterns:
1. resolve-library-id with libraryName (e.g., "radix-ui")
2. query-docs with libraryId and specific question
Common libraries:
/radix-ui/primitives- Dialog, Dropdown, Select patterns/tanstack/query- Data fetching patterns/tanstack/table- Table patterns
Output Format
After running this skill, output:
## Design Context
| Source | Relevant Patterns |
|--------|-------------------|
| Design System | [tokens, components] |
| Storybook | [stories that apply] |
| Codebase | [existing implementations] |
| Libraries | [patterns from docs] |
### Applicable Components
- [Component]: [How it applies to current wireframe]
### Design Tokens to Use
- Spacing: [tokens]
- Colors: [tokens]
- Typography: [tokens]
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.
- 1mo ago First seen · 109 lines · 18 tokens per session scan A d7b72fce3ee8
design-context is a skill published in the GitHub repository WellApp-ai/Well (345 stars, last pushed 6d ago), licensed MIT. It adds 18 tokens to every session and 616 once invoked, about $0.0001 per session on Opus 5.5. 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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