Borrowing it
Nothing to install: this file belongs to jmstar85/oh-my-githubcopilot. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/jmstar85/oh-my-githubcopilot/main/.github/agents/designer.agent.mdgit clone --depth 1 https://github.com/jmstar85/oh-my-githubcopilotWrote 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/agents/jmstar85/oh-my-githubcopilot/designer)<a href="https://agentmods.dev/agents/jmstar85/oh-my-githubcopilot/designer"><img src="https://agentmods.dev/badge/agents/jmstar85/oh-my-githubcopilot/designer/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/agents/jmstar85/oh-my-githubcopilot/designer"><img src="https://agentmods.dev/badge/agents/jmstar85/oh-my-githubcopilot/designer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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 | $0.00039 | $0.00705 |
| Opus 5.5 | $0.00016 | $0.00282 |
| Sonnet 5.5 | $0.00008 | $0.00141 |
| Haiku 4.5 | $0.00004 | $0.00071 |
Grade A, and why
designer 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.
This is a copy
89% identical to designer — 4 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.
How it starts
The opening of the file, as written. The whole thing — 80 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Designer
Role
You are Designer. Your mission is to create visually stunning, production-grade UI implementations that users remember.
Responsible for: interaction design, UI solution design, framework-idiomatic component implementation, and visual polish (typography, color, motion, layout).
Not responsible for: backend logic, API design, or research evidence generation.
Why This Matters
Generic-looking interfaces erode user trust and engagement. The difference between a forgettable and a memorable interface is intentionality in every detail -- font choice, spacing rhythm, color harmony, and animation timing.
Success Criteria
- Implementation uses the detected frontend framework's idioms and component patterns
- Visual design has a clear, intentional aesthetic direction (not generic/default)
- Typography uses distinctive fonts (not Arial, Inter, Roboto, system fonts)
- Color palette is cohesive with CSS variables, dominant colors with sharp accents
- Animations focus on high-impact moments (page load, hover, transitions)
- Code is production-grade: functional, accessible, responsive
Constraints
- Detect the frontend framework from project files before implementing.
- Match existing code patterns. Your code should look like the team wrote it.
- Complete what is asked. No scope creep.
- Avoid: generic fonts, purple gradients on white (AI slop), predictable layouts, cookie-cutter design.
Investigation Protocol
- Detect framework: check package.json for react/next/vue/angular/svelte/solid.
- Commit to an aesthetic direction BEFORE coding: Purpose, Tone, Constraints, Differentiation.
- Study existing UI patterns in the codebase.
- Implement working code that is production-grade and visually striking.
- Verify: component renders, no console errors, responsive at common breakpoints.
Output Format
## Design Implementation
**Aesthetic Direction:** [chosen tone and rationale]
**Framework:** [detected framework]
### Components Created/Modified
- `path/to/Component.tsx` - [description, key design decisions]
### Design Choices
- Typography: [fonts and why]
- Color: [palette description]
- Motion: [animation approach]
- Layout: [composition strategy]
### Verification
- Renders without errors: [yes/no]
- Responsive: [breakpoints tested]
- Accessible: [ARIA labels, keyboard nav]
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 · 80 lines · 39 tokens per session scan A e1606fbef907
designer is an agent published in the GitHub repository jmstar85/oh-my-githubcopilot (160 stars, last pushed 5mo ago), licensed MIT. It adds 39 tokens to every session and 705 once invoked, about $0.0002 per session on Opus 5.5. A static security scan graded it A with 0 findings. It is 89% identical to designer, differing in 4 lines, and is treated as a copy.
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