Bklit UI is an open-source collection of customizable interface components and charts for building React applications with shadcn. Developers use it to add data visualizations such as funnels, gauges, maps, financial charts, and other interactive displays. The catalogue add-ons provide workflows for using its components and chart registry.
Borrowing it
Nothing to install: this file belongs to bklit/bklit-ui. 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/bklit/bklit-ui/main/.agents/skills/bklit-playground/SKILL.mdgit clone --depth 1 https://github.com/bklit/bklit-uiWrote 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/bklit/bklit-ui/bklit-playground)<a href="https://agentmods.dev/skills/bklit/bklit-ui/bklit-playground"><img src="https://agentmods.dev/badge/skills/bklit/bklit-ui/bklit-playground/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/bklit/bklit-ui/bklit-playground"><img src="https://agentmods.dev/badge/skills/bklit/bklit-ui/bklit-playground.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- Socket pass
- Snyk pass
- NVIDIA SkillSpector warn
SkillSpector: 2 findings, up to medium
These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →
- medium Agent Snooping · line 15 Skill enumerates or reads other installed skills. Access to other skills' SKILL.md files or the skills directory reveals prompt instructions, capabilities, and secrets that should be invisible to peer skills.Fix: Remove all code or instructions that list or read other skills' files or directories. Skills should operate independently; cross-skill access is a privilege escalation.
- medium Agent Snooping · line 30 Skill enumerates or reads other installed skills. Access to other skills' SKILL.md files or the skills directory reveals prompt instructions, capabilities, and secrets that should be invisible to peer skills.Fix: Remove all code or instructions that list or read other skills' files or directories. Skills should operate independently; cross-skill access is a privilege escalation.
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 | $0.00035 | $0.00292 |
| Opus 5.5 | $0.00014 | $0.00117 |
| Sonnet 5.5 | $0.00007 | $0.00058 |
| Haiku 4.5 | $0.00003 | $0.00029 |
Grade A, and why
bklit-playground 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 21d 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
Deprecated: bklit-playground
This skill is retired. Chart prototyping and editing now happen in Studio only.
Use instead
Read and follow .agents/skills/bklit-studio/SKILL.md.
- Dev URL: http://localhost:3000/studio (
pnpm devfrom repo root) - Optional:
?chart=line-chart(or any slug frompackages/studio/src/chart-slugs.ts)
Why
Studio already includes the editor shell, component tree, properties, motion controls, codegen, and registry-backed previews. The gitignored /playground route duplicated wiring and drifted from production Studio.
/playground route
Redirects to /studio. Do not scaffold apps/web/app/playground/page.tsx or apps/web/components/playground/ for new chart work.
Shipping
Unchanged: .agents/skills/bklit-ship/SKILL.md — prototypes should live in packages/ui and packages/studio, not under apps/web/components/playground/.
What ships with it
1 file 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.
- 21d ago Changed · +2 lines ed6b086e6d02
- 2mo ago First seen · 31 lines · 35 tokens per session scan A a32ab7848a78
bklit-playground is a skill published in the GitHub repository bklit/bklit-ui (1,898 stars, last pushed 5d ago), licensed MIT. It adds 35 tokens to every session and 292 once invoked, about $0.0001 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.
bklit-playground compared with skills from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| bklit-playgroundbklit/bklit-ui | Skill | 1.9k | 5d ago | MIT | A | 35 | Claude Code |
| add-componentf5/unovis | Skill | 2.9k | yesterday | Apache-2.0 | A | 74 | Claude Code, Codex |
| add-gallery-examplef5/unovis | Skill | 2.9k | yesterday | Apache-2.0 | A | 63 | Claude Code, Codex |
| commitf5/unovis | Skill | 2.9k | yesterday | Apache-2.0 | A | 90 | Claude Code, Codex |
| open-prf5/unovis | Skill | 2.9k | yesterday | Apache-2.0 | A | 67 | Claude Code, Codex |
| lieflat-chartslarashero3-dotcom/lieflat-charts | Skill | 6.7k | 3d ago | none | A | 125 | Codex |
| chart-description-writerur-grue/autopunk-media-skills | Skill | 43 | 2mo ago | MIT | A | 52 | Claude Code |