Getting it into your agent
This one installs as part of its plugin. Adding the marketplace and installing the plugin brings it with everything else the plugin ships.
/plugin marketplace add strongeron/storybook-workbench/plugin install storybook-workbenchWrote 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/strongeron/storybook-workbench/sb-health)<a href="https://agentmods.dev/skills/strongeron/storybook-workbench/sb-health"><img src="https://agentmods.dev/badge/skills/strongeron/storybook-workbench/sb-health/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/strongeron/storybook-workbench/sb-health"><img src="https://agentmods.dev/badge/skills/strongeron/storybook-workbench/sb-health.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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 | $0.00065 | $0.02479 |
| Opus 5 | $0.00032 | $0.01239 |
| Sonnet 5 | $0.00013 | $0.00496 |
| Haiku 4.5 | $0.00006 | $0.00248 |
Grade A, and why
sb-health scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 12d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 157 lines — stays where its author put it; the contents beside it link to each section on GitHub.
sb-health — design-system health gate
The browser can't shell out, so the script runs the checks and writes JSON the wrapper renders.
design-system-health.json is a rendered output (Health Docs + DesignSystemHealth/TokenMatrix), so
refresh-usage.sh re-runs this check with the other rendered extractors — see CONTEXT.md §STORAGE MAP.
Run it
SKILL=${CLAUDE_PLUGIN_ROOT:-${CLAUDE_PLUGIN_ROOT}}
CORE=${CLAUDE_PLUGIN_ROOT:-${CLAUDE_PLUGIN_ROOT}}
"$SKILL/scripts/validate-design-system.sh" # → .storybook/design-system-health.json
# --emit-prompt also outputs an LLM sub-agent prompt for semantic checks
# (naming drift, semantic-vs-presentational, scale clarity)
"$CORE/scripts/scaffold-wrapper.sh" DesignSystemHealth # → .storybook/wrappers/ (+ icons.tsx)
# Opt-in property→token-family check (off until a designer authors the rules file):
"$SKILL/scripts/check-property-tokens.py" --init # scaffold design-system/lint/colors.json (+ schema)
What it checks
- raw-color — hex/rgba/hsl literals in components (should be tokens). When the literal's value EQUALS
an existing token's resolved value (e.g.
#005596on a tile whose siblings usebg-secondary→--secondaryresolves to#005596), the fix is to adopt that exact token, not invent a new one — the finding names the matching token when it can resolve one, so the fix is "replace with--x", not "add a token". - undefined-token — components reference
--foothat's not declared - scale-gap — spacing/type scale has unexpected jumps
- unused-token — declared but never referenced (var, Tailwind utility, or custom
@utility). Read from sb-inventory's single source (.storybook/project-inventory.json→tokens.map), not re-scanned here, so health, inventory, and the token views never disagree. Runsb-inventoryfirst; if the file is absent this check is skipped. - design-md — a
DESIGN.md(Google Labs YAML-tokens-plus-markdown, an increasingly common way to brief agents on a visual identity) is a claim, not ground truth — likeAGENTS.mdit drifts as the code changes, or was wrong from the start. The script finds it and cross-checks the colors it claims against the colors the code's CSS tokens actually declare, emittingdesign-md-driftfor each claimed color the code doesn't define. Treat a presentDESIGN.mdas untrusted until reconciled. - property-token-family (opt-in) — a valid, declared token used on the wrong property family
(e.g.
color: var(--color-container)— a container token used as text color). raw-color catches "no token at all"; undefined-token catches "token doesn't exist"; this catches "real token, wrong slot." Off until a designer authorsdesign-system/lint/colors.json(see below), so the zero-config default is preserved. Findings arewarning/infoonly — an opt-in never flips a green CI build red. - runs
stylelintif configured
What ships with it
14 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.
- agents/openai.yaml 1.2 KB
- CONTEXT.md 14 KB
- decorators/withLayoutFrame.tsx 2.6 KB
- references/colors.example.json 271 B
- references/colors.schema.json 1.4 KB
- scripts/check-property-tokens.py 10 KB runs code
- scripts/scaffold-wrapper.sh 16 KB runs code
- scripts/validate-design-system.sh 17 KB runs code
- wrappers/DesignSystemHealth.tsx 20 KB
- wrappers/icons.tsx 3.6 KB
- wrappers/ReportIntro.tsx 12 KB
- wrappers/resolve-paint.ts 2.8 KB runs code
- wrappers/usage-index.tsx 12 KB
- wrappers/usage-stamp.tsx 12 KB
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.
- 12d ago First seen · 157 lines · 65 tokens per session scan A 9792814d5f60
sb-health is a skill published in the GitHub repository strongeron/storybook-workbench (33 stars, last pushed 2mo ago), licensed MIT. It adds 65 tokens to every session and 2,479 once invoked, about $0.0003 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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