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 cognitedata/builder-skills --skill use-topbargit clone --depth 1 https://github.com/cognitedata/builder-skillsWrote 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/cognitedata/builder-skills/use-topbar)<a href="https://agentmods.dev/skills/cognitedata/builder-skills/use-topbar"><img src="https://agentmods.dev/badge/skills/cognitedata/builder-skills/use-topbar/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/cognitedata/builder-skills/use-topbar"><img src="https://agentmods.dev/badge/skills/cognitedata/builder-skills/use-topbar.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- Socket pass
- Snyk warn
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 | $0.00089 | $0.01047 |
| Opus 5 | $0.00044 | $0.00524 |
| Sonnet 5 | $0.00018 | $0.00209 |
| Haiku 4.5 | $0.00009 | $0.00105 |
Grade A, and why
use-topbar 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 6d 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 — 91 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Topbar
@aura/topbar is the single, compliant top navigation bar for every authenticated Flows/Fusion app. It is a shadcn registry component (installed via pnpm dlx shadcn@latest add @aura/topbar), not an npm package.
- Storybook: https://cognitedata.github.io/aura/storybook/?path=/docs/primitives-topbar--docs
- Full rules: RULES.md · Interview: INTERVIEW.md · Install + code: IMPLEMENTATION.md
Non-negotiables: Exactly one Topbar per page, composed only from
@aura/topbarprimitives, installed via the shadcn CLI only. If installation fails, surface the blocker — never build a custom header fallback. See RULES.md §1, §11, §12.
Step 0 — Auto-prompt hook setup
Ensure the topbar interview is triggered at the start of every future Cursor session in this project.
- Check whether
.cursor/hooks.jsonexists in the project root. - If it does not exist, create it:
{
"version": 1,
"hooks": {
"sessionStart": [
{
"type": "prompt",
"prompt": "This is a Flows/Fusion application. Before implementing any UI or navigation work, read and follow the topbar skill and run the topbar configuration interview with the user."
}
]
}
}
- If
.cursor/hooks.jsonalready exists without a topbarsessionStartentry, merge the entry above — do not overwrite unrelated hooks. - Confirm to the user, then continue.
Step 1 — Pre-flight: read the app
Before asking any questions, read:
package.json— package manager, existing UI deps, existing@aura/topbarsrc/App.tsx(or main layout file) — routing, existing dark-mode hook/context- Flows/Fusion app config (
app.config.ts,fusion.config.ts, manifest) —displayName,name, app mark / branding
Apply any found defaults and skip the corresponding interview questions. State what was inferred.
Step 2 — Configuration interview (mandatory)
Run the full Q1–Q9 interview in INTERVIEW.md before writing any implementation code. Ask one question at a time; skip only questions that Step 1 already answered definitively.
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.
- 6d ago Changed · -1 lines · -12 tokens per session 9bc7ebfdcd79
- 10d ago First seen · 92 lines · 101 tokens per session scan A 48c100e479eb
use-topbar is a skill published in the GitHub repository cognitedata/builder-skills (6 stars, last pushed 2d ago), licensed Apache-2.0. It adds 89 tokens to every session and 1,047 once invoked, about $0.0004 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.
Other skills, from other repositories
visual-ralph
Visual Ralph orchestration for frontend UI from generated references, static references, or live URL targets, using $ralph with built-in visual verdict and pixel-diff evidence until the implementation matches and leaves a reproducible design system.
debug-optimize-lcp
Guides debugging and optimizing Largest Contentful Paint (LCP) using Chrome DevTools MCP tools. Use this skill whenever the user asks about LCP performance, slow page loads, Core Web Vitals optimization, or wants to understand why their page's main content takes too long to appear. Also use when the user mentions…
repro-admin
Reproduce an EmDash admin UI bug. Attach a container, start the demo dev server, drive the admin with agent-browser using the dev-bypass session, and capture the reproduction as screenshots plus a replayable transcript.
create-site
Creates a new Power Pages code site (SPA) using React, Angular, Vue, or Astro. Guides through the full process from initial concept to deployed site: requirements discovery, scaffolding, component planning, design, implementation, validation, and deployment. Use when the user wants to create, build, or scaffold a new…
prototype-web
A clickable, high-fidelity web product prototype with navigation, a hero section, feature cards, steps, social proof, and optional pricing. It is designed to resemble a finished landing page while remaining a prototype.
menu-transitions-rtl
Animate react-horizontal-scrolling-menu scrolling and build right-to-left menus: noPolyfill defaults to true since v8, so transitionDuration (default 500), a custom-easing-function transitionBehavior, and per-call ScrollOptions { duration, boundary } on scrollToItem/scrollNext/scrollPrev are silently ignored unless…