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 storybookjs/mcp --skill storybook-initgit clone --depth 1 https://github.com/storybookjs/mcpWrote 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/storybookjs/mcp/storybook-init)<a href="https://agentmods.dev/skills/storybookjs/mcp/storybook-init"><img src="https://agentmods.dev/badge/skills/storybookjs/mcp/storybook-init/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/storybookjs/mcp/storybook-init"><img src="https://agentmods.dev/badge/skills/storybookjs/mcp/storybook-init.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector warn
SkillSpector: 1 finding, 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 MCP Rug Pull · line 7 npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.Fix: Pin the version: npx @scope/[email protected]
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 | $0.00020 | $0.00133 |
| Opus 5 | $0.00010 | $0.00067 |
| Sonnet 5 | $0.00004 | $0.00027 |
| Haiku 4.5 | $0.00002 | $0.00013 |
Grade A, and why
storybook-init 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 11d 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.
Copies of this mod
1 near-identical copy found in the catalogue:
- init — 97% identical, 4 lines differ
What it actually says
- Run
npm create storybook@latestinside your project's root directory to install the latest version of Storybook. Use the matching package-manager command when appropriate, such aspnpm create storybook@latestoryarn create storybook. - After initialization succeeds, run
npx storybook add @storybook/addon-mcp. - Invoke the
/storybook-setupskill to help the user set up project-specific Storybook configuration, such as the.storybook/preview.tsfile.
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.
- 11d ago First seen · 9 lines · 20 tokens per session scan A 225a3d6829ad
storybook-init is a skill published in the GitHub repository storybookjs/mcp (270 stars, last pushed 3d ago), licensed MIT. It adds 20 tokens to every session and 133 once invoked, about $0.0001 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 2026-08-30.
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