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 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 | $0.00089 | $0.01047 |
| Opus 5.5 | $0.00036 | $0.00419 |
| Sonnet 5.5 | $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 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 — 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.
- 2mo ago Changed · -1 lines · -12 tokens per session 9bc7ebfdcd79
- 2mo 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 yesterday), licensed Apache-2.0. It adds 89 tokens to every session and 1,047 once invoked, about $0.0004 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 2026-08-31.
use-topbar compared with skills from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| use-topbarcognitedata/builder-skills | Skill | 6 | yesterday | Apache-2.0 | A | 89 | Claude Code |
| imagegenopenai/codex | Skill | 134k | today | Apache-2.0 | A | 113 | Codex |
| playwright-climicrosoft/playwright | Skill | 99k | today | Apache-2.0 | A | 19 | Claude Code |
| local-ai-agentsmicrosoft/ai-agents-for-beginners | Skill | 79k | today | MIT | A | 200 | Claude Code, Codex |
| systematic-debuggingobra/superpowers | Skill | 314k | 3d ago | MIT | A | 21 | Claude Code |
| next-cache-components-adoptionvercel/next.js | Skill | 143k | yesterday | MIT | A | 95 | Claude Code |
| next-partial-prefetching-adoptionvercel/next.js | Skill | 143k | yesterday | MIT | A | 103 | Claude Code |