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 agentmods add skills/bnet47/codexicon/design-experiencenpx skills add bnet47/codexicon --skill design-experiencegit clone --depth 1 https://github.com/bnet47/codexiconWhat 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 | $0.00034 | $0.00985 |
| Opus 5 | $0.00017 | $0.00492 |
| Sonnet 5 | $0.00007 | $0.00197 |
| Haiku 4.5 | $0.00003 | $0.00098 |
Grade A, and why
design-experience 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 3d 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 — 77 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Design experience
Create a coherent customer experience, not a decorated wireframe. Make every visual choice serve the product, audience, setting, and task.
1. Establish context
Read the approved charter or feature brief, existing interface, design system, brand assets, content, and relevant conventions. Read agent_docs/design.md when it exists. Do not create durable design context unless the user requests it or the approved workflow requires it.
Define before implementation:
- user, primary task, setting, and observable success;
- surface register: brand when design carries identity and persuasion, or product when design primarily serves repeated work;
- product personality, emotional tone, and anti-references;
- one memorable, context-specific design idea;
- brand, platform, accessibility, performance, content, and licensing constraints;
- required viewports, states, and interaction paths.
Write one physical-scene sentence: who uses this, where, in what conditions, and with what level of urgency or attention. Use it to choose light versus dark, density, contrast, target sizes, motion, and information hierarchy.
Set three dials explicitly: variance (quiet to expressive), motion (still to dynamic), and density (spacious to compact). Do not equate distinctive with loud.
2. Inspect before inventing
- Reuse established tokens, components, content style, and asset language when they work.
- Inspect the running product and representative project files; source code alone does not reveal the experience.
- For an existing surface, preserve product identity unless the request explicitly authorizes redesign.
- Verify current platform guidance and references when they may have changed. Never clone proprietary layouts or assets.
- Confirm fonts, icons, images, and libraries are available, performant, and licensed.
For visual-system work, new surfaces, redesigns, or polish, read references/interface-craft.md. For production flows, forms, onboarding, or release hardening, also read references/hardening.md.
What ships with it
3 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.
- 3d ago First seen · 77 lines · 34 tokens per session scan A b8231e9b63e0
design-experience is a skill published in the GitHub repository bnet47/codexicon (5 stars, last pushed 4d ago), licensed MIT. It adds 34 tokens to every session and 985 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 2026-08-31.
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