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 aj-geddes/useful-ai-prompts --skill design-handoffgit clone --depth 1 https://github.com/aj-geddes/useful-ai-promptsWrote 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/aj-geddes/useful-ai-prompts/design-handoff)<a href="https://agentmods.dev/skills/aj-geddes/useful-ai-prompts/design-handoff"><img src="https://agentmods.dev/badge/skills/aj-geddes/useful-ai-prompts/design-handoff/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/aj-geddes/useful-ai-prompts/design-handoff"><img src="https://agentmods.dev/badge/skills/aj-geddes/useful-ai-prompts/design-handoff.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- Socket pass
- Snyk 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 | $0.00027 | $0.00541 |
| Opus 5.5 | $0.00011 | $0.00216 |
| Sonnet 5.5 | $0.00005 | $0.00108 |
| Haiku 4.5 | $0.00003 | $0.00054 |
Grade A, and why
design-handoff 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 2mo 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 — 101 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Design Handoff
Table of Contents
Overview
Design handoff bridges design and development, ensuring developers have all information needed to implement designs accurately and efficiently.
When to Use
- Before development starts
- Feature completion in design
- Component library updates
- Design system changes
- Iterative refinement handoff
Quick Start
Minimal working example:
Design Handoff Package:
Overview:
- Feature description
- User flows
- Key interactions
- Platform (web, iOS, Android)
Screens & Components:
- All screen designs
- Responsive variants (mobile, tablet, desktop)
- All component states (default, hover, focus, disabled, error)
- Dark mode variants (if applicable)
Specifications:
- Typography (font, size, weight, line-height)
- Spacing & layout (padding, margin, gaps)
- Colors (hex values, opacity)
- Shadows & elevations
- Border radius
- Animations & transitions
Interactions:
- Click/tap behaviors
- Hover states
// ... (see reference guides for full implementation)
Reference Guides
Detailed implementations in the references/ directory:
| Guide | Contents |
|---|---|
| Developer-Friendly Documentation | Developer-Friendly Documentation |
| Handoff Checklist | Handoff Checklist |
| Design-Dev Collaboration | Design-Dev Collaboration |
Best Practices
✅ DO
- Create comprehensive documentation
- Export all assets and specifications
- Document every component state
- Include responsive variants
- Explain design decisions
- Provide developer-friendly specs
- Use shared design tools
- Schedule kickoff meeting
- Make yourself available for questions
- Review implementations and iterate
❌ DON'T
What ships with it
4 files 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.
- 2mo ago First seen · 101 lines · 27 tokens per session scan A baaa7989863a
design-handoff is a skill published in the GitHub repository aj-geddes/useful-ai-prompts (376 stars, last pushed 8mo ago), licensed MIT. It adds 27 tokens to every session and 541 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 2026-09-03.
design-handoff compared with skills from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| design-handoffaj-geddes/useful-ai-prompts | Skill | 376 | 8mo ago | MIT | A | 27 | Claude Code, Codex |
| webgl-holographic-foilnexu-io/open-design | Skill | 106k | yesterday | Apache-2.0 | A | 41 | Claude Code, Codex |
| html-ppt-hermes-cyber-terminalnexu-io/open-design | Skill | 106k | yesterday | Apache-2.0 | A | 53 | Claude Code, Codex |
| html-ppt-taste-brutalistnexu-io/open-design | Skill | 106k | yesterday | Apache-2.0 | A | 78 | Claude Code, Codex |
| visual-ralphYeachan-Heo/oh-my-codex | Skill | 34k | 3d ago | MIT | A | 52 | Codex |
| glance-canonical-layoutsandroid/skills | Skill | 10k | yesterday | Apache-2.0 | A | 56 | Claude Code |
| accessibilitymicrosoft/hve-core | Skill | 1.6k | yesterday | MIT | A | 47 | Claude Code |