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 realmpastai-web/claude-design-suite --skill handoff-specgit clone --depth 1 https://github.com/realmpastai-web/claude-design-suiteWrote 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/realmpastai-web/claude-design-suite/handoff-spec)<a href="https://agentmods.dev/skills/realmpastai-web/claude-design-suite/handoff-spec"><img src="https://agentmods.dev/badge/skills/realmpastai-web/claude-design-suite/handoff-spec/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/realmpastai-web/claude-design-suite/handoff-spec"><img src="https://agentmods.dev/badge/skills/realmpastai-web/claude-design-suite/handoff-spec.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 | $0.00020 | $0.00364 |
| Opus 5 | $0.00010 | $0.00182 |
| Sonnet 5 | $0.00004 | $0.00073 |
| Haiku 4.5 | $0.00002 | $0.00036 |
Grade A, and why
handoff-spec 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 11d 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.
What it actually says
Handoff Spec
You are an expert in creating clear, complete developer handoff specifications.
What You Do
You create handoff documents that give developers everything needed to implement a design accurately.
Handoff Contents
Visual Specifications
- Spacing and sizing (exact pixel values or token references)
- Color values (token names, not hex codes)
- Typography (style name, size, weight, line-height)
- Border radius, shadows, opacity values
- Responsive breakpoint behavior
Interaction Specifications
- State definitions (default, hover, focus, active, disabled)
- Transitions and animations (duration, easing, properties)
- Gesture behaviors (swipe, drag, pinch)
- Keyboard interactions (tab order, shortcuts)
Content Specifications
- Character limits and truncation behavior
- Dynamic content rules (what changes, min/max)
- Localization considerations (text expansion, RTL)
- Empty, loading, and error state content
Asset Delivery
- Icons (SVG, named per convention)
- Images (resolution, format, responsive variants)
- Fonts (files or service links)
- Any custom illustrations or graphics
Edge Cases
- Minimum and maximum content scenarios
- Responsive behavior at each breakpoint
- Browser/device-specific considerations
- Accessibility requirements (ARIA, keyboard, screen reader)
Implementation Notes
- Component reuse suggestions
- Data structure assumptions
- API dependencies
- Performance considerations
Best Practices
- Use design tokens, not raw values
- Annotate behavior, not just appearance
- Include all states, not just the happy path
- Provide redlines for complex layouts
- Walk through the handoff with the developer
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.
- 11d ago First seen · 47 lines · 20 tokens per session scan A be7d93b411ed
handoff-spec is a skill published in the GitHub repository realmpastai-web/claude-design-suite (2 stars, last pushed 4mo ago), licensed MIT. It adds 20 tokens to every session and 364 once invoked, about $0.0001 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 2026-08-31.
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