Borrowing it
Nothing to install: this file belongs to ProfSynapse/nexus. 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/ProfSynapse/nexus/main/.claude/skills/nexus-ui-mockups/SKILL.mdgit clone --depth 1 https://github.com/ProfSynapse/nexusWrote 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/profsynapse/nexus/nexus-ui-mockups)<a href="https://agentmods.dev/skills/profsynapse/nexus/nexus-ui-mockups"><img src="https://agentmods.dev/badge/skills/profsynapse/nexus/nexus-ui-mockups/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/profsynapse/nexus/nexus-ui-mockups"><img src="https://agentmods.dev/badge/skills/profsynapse/nexus/nexus-ui-mockups.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 | $0.00086 | $0.00638 |
| Opus 5.5 | $0.00034 | $0.00255 |
| Sonnet 5.5 | $0.00017 | $0.00128 |
| Haiku 4.5 | $0.00009 | $0.00064 |
Grade A, and why
nexus-ui-mockups 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 — 42 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Nexus UI Mockups
Context: a mockup is a standalone HTML/CSS/JS page in docs/mockups/ that shows
a proposed Nexus surface before the plugin code exists. It is worth building only
if it looks like the real product and promises only what the plugin can actually
render; otherwise it is a drawing that costs a rewrite later. This router points
at the procedures — the detail loads when you take the path.
Workflow
- Decide the artifact. A new or substantially reshaped surface gets a mockup first. A tweak inside an existing layout does not — say so and implement.
- New mockup: follow
protocols/build-mockup.mdstep by step. - Existing mockup to change, supersede, or retire: follow
protocols/revise-mockup.mdfirst — you MUST NOT overwrite a mockup a plan already cites as its visual contract. - Before showing anyone: run
python3 .claude/skills/nexus-ui-mockups/scripts/check_mockup.pyfrom the repo root and fix every error it prints. Nothing else in the repo checks mockups —eslintand the build both ignoredocs/. - Implementation is a separate job under
src/, governed by CLAUDE.md's hard rules and the sibling skills (nexus-mobile-compatfor phone and plugin-store constraints,nexus-agentsfor tools behind the UI,nexus-testingfor proving it in the running plugin). Mockup-only liberties never travel there.
Map
references/fidelity.md— how to make it look like Obsidian and like Nexus: the token block, both themes, production class naming, icons, phone widths.references/honest-mockups.md— keeping the mockup buildable: Obsidian form primitives, labelling simulation, flagging what will not ship as drawn.references/handoff.md— serving it, review, blessing it as a plan's visual contract, and what happens to it after the UI ships.protocols/—build-mockup.md,revise-mockup.md,self-refine.md.scripts/—check_mockup.py(validate a mockup),theme_tokens.py(extract the token set production actually relies on). Run them, do not reimplement.
What ships with it
9 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.
- protocols/build-mockup.md 4.5 KB
- protocols/revise-mockup.md 2.8 KB
- protocols/self-refine.md 2.1 KB
- references/fidelity.md 5.6 KB
- references/handoff.md 3.4 KB
- references/honest-mockups.md 4.0 KB
- refinement-log.md 2.6 KB
- scripts/check_mockup.py 8.3 KB runs code
- scripts/theme_tokens.py 4.5 KB runs code
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 · 42 lines · 86 tokens per session scan A aad718e1b42c
nexus-ui-mockups is a skill published in the GitHub repository ProfSynapse/nexus (158 stars, last pushed 5d ago), licensed MIT. It adds 86 tokens to every session and 638 once invoked, about $0.0003 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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