add-component

add-component is a command for Claude Code from go4cas/quiver. It costs 0 tokens per session (355 once invoked), scanned A, original, MIT.

A command that creates a new Quiver user-interface component from a PascalCase name, such as StatusBadge. A component is a reusable piece of a web interface.

In plain words
What is it for?
Use it to generate a component file in src/components, infer sensible properties, style it with the project’s conventions, and check the result with type checking and tests.
Why use it?
It applies the project’s component, accessibility, styling, documentation, and type-checking rules consistently, reducing setup work and common mistakes.

Command for Claude Code

Written for Claude Code: $ARGUMENTS substitution.

Good fit Use it to generate a component file in src/components, infer sensible properties, style it with the project’s conventions, and check the result with type checking and tests.

Compare 6 commands from other repositories ↓
Install with agentmods
npx agentmods add commands/go4cas/quiver/add-component
Install

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.

Clone the repo
git clone --depth 1 https://github.com/go4cas/quiver

Made for: Claude Code.

Wrote 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.

agentmods badge for add-component

README.md
[![agentmods](https://agentmods.dev/badge/commands/go4cas/quiver/add-component/github.svg)](https://agentmods.dev/commands/go4cas/quiver/add-component)
Your own site
<a href="https://agentmods.dev/commands/go4cas/quiver/add-component"><img src="https://agentmods.dev/badge/commands/go4cas/quiver/add-component/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.

agentmods 80×15 button for add-component

Your own site · 80×15
<a href="https://agentmods.dev/commands/go4cas/quiver/add-component"><img src="https://agentmods.dev/badge/commands/go4cas/quiver/add-component.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 0 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 355 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00000 $0.00355
Opus 5.5 $0.00000 $0.00142
Sonnet 5.5 $0.00000 $0.00071
Haiku 4.5 $0.00000 $0.00036

Measured 17d ago against content hash 92027156c5a4, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

add-component 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 17d 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.

.claude/commands/add-component.md · 38 lines

What it actually says

Create a new Quiver component named: $ARGUMENTS

The argument is a PascalCase component name (e.g. PostCard, StatusBadge). If it is not PascalCase, convert it.

Follow these steps exactly:

  1. Create src/components/<Name>.js:
import { html } from '@arrow-js/core'

export function <Name>({ /* props */ }) {
  return html`
    <div>
      <!-- component content -->
    </div>
  `
}
  • Derive sensible props from the component name
  • Apply all Arrow.js rules:
    • Wrap reactive props in () => only if the prop value can change after render; static props (strings, numbers passed once) do not need () =>
    • No <!-- --> HTML comments inside the template literal — use JS comments above it instead
    • Use aria-disabled + CSS for disabled states, never .disabled="${...}"
  • Use Tailwind CSS utility classes for styling; match the visual style of existing components in src/components/
  • Annotate the component's props with JSDoc, e.g. /** @param {{ title: string }} props */ — strict checkJs is enforced and untyped props fail bun run typecheck
  1. Verify — run and fix any failures:
bun run typecheck && bun run test && bun run test:e2e
  1. Report:
    • The file created
    • A one-line usage example: import { <Name> } from '../components/<Name>.js' (import directly — there is no barrel file)
    • Any props the component accepts
Changes

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.

  1. 17d ago Changed 92027156c5a4
  2. 1mo ago First seen · 38 lines · 0 tokens per session scan A 46bbc135524e

Subscribe to this mod's changes

add-component is a command published in the GitHub repository go4cas/quiver (5 stars, last pushed 5d ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 355 tokens. 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.