Borrowing it
Nothing to install: this file belongs to brianmontanaweb/agentic-design-system. 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/brianmontanaweb/agentic-design-system/main/.claude/skills/add-component-spec/SKILL.mdgit clone --depth 1 https://github.com/brianmontanaweb/agentic-design-systemWrote 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/brianmontanaweb/agentic-design-system/add-component-spec)<a href="https://agentmods.dev/skills/brianmontanaweb/agentic-design-system/add-component-spec"><img src="https://agentmods.dev/badge/skills/brianmontanaweb/agentic-design-system/add-component-spec/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/brianmontanaweb/agentic-design-system/add-component-spec"><img src="https://agentmods.dev/badge/skills/brianmontanaweb/agentic-design-system/add-component-spec.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 | $0.00069 | $0.01550 |
| Opus 5 | $0.00034 | $0.00775 |
| Sonnet 5 | $0.00014 | $0.00310 |
| Haiku 4.5 | $0.00007 | $0.00155 |
Grade A, and why
add-component-spec 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 9d 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 — 125 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Add Component Spec Doc
Create the spec doc given $ARGUMENTS in the format <ComponentName>.
Gotchas
- The tokens field requires active scanning — extract every semantic token string from the source style props (any quoted dotted name in a Chakra style prop that is not
#-hex) and list each in the matchingtokens.*array. Do not write the list from memory. - Every prop in the
export interfaceblock goes inprops— including string-literal-key props like'aria-label'?: string. - Use exact TypeScript types in
props—Record<string, unknown>is notobject; unions list all members. - The doc is real TypeScript, not markdown —
packages/mcp-builder/scripts/generate.tsimports it directly to build the MCP server's component metadata. There is no parse contract to satisfy;tscandeslintare the only gates. Step 4's regeneration only fails if the file doesn't type-check asComponentDocor a required field is missing. - No approval gate — creating one doc is the whole task; proceed without asking.
Step 1 — Locate the component source
ls packages/core/src/<ComponentName>/<ComponentName>.tsx packages/agents/src/<ComponentName>/<ComponentName>.tsx 2>/dev/null
If no output, stop immediately and respond:
## No source: <ComponentName>
Neither package contains `<ComponentName>`. Create it first with
`/add-component-source <ComponentName>` (source only) or `/add-component <ComponentName>` (full scaffold).
Infer the package (core or agents) from which path exists.
Step 2 — Read context
Read:
- The component source file — props interface, variants, states, ARIA attributes, token usage
packages/core/src/Button/Button.doc.ts— theComponentDocshape to followpackages/component-doc/src/index.ts— the authoritativeComponentDoc/PropDoc/TypeDocinterfaces- If
packages/<package>/src/<ComponentName>/<ComponentName>.doc.tsalready exists, stop and suggest/update-component <ComponentName>instead — spec drift is that skill's job.
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.
- 9d ago First seen · 125 lines · 69 tokens per session scan A 4e757dfbb53f
add-component-spec is a skill published in the GitHub repository brianmontanaweb/agentic-design-system (3 stars, last pushed 19d ago), licensed MIT. It adds 69 tokens to every session and 1,550 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 2026-08-31.
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