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 agentmods add commands/go4cas/quiver/add-featuregit clone --depth 1 https://github.com/go4cas/quiverWrote 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/commands/go4cas/quiver/add-feature)<a href="https://agentmods.dev/commands/go4cas/quiver/add-feature"><img src="https://agentmods.dev/badge/commands/go4cas/quiver/add-feature.svg" alt="Measured on agentmods" 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 | $0.00000 | $0.00598 |
| Opus 5 | $0.00000 | $0.00299 |
| Sonnet 5 | $0.00000 | $0.00120 |
| Haiku 4.5 | $0.00000 | $0.00060 |
Grade A, and why
add-feature 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 3d 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 — 57 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Add a new feature to this Quiver app: $ARGUMENTS
The argument is a feature name and optional brief description (e.g. blog — list and read blog posts, cart — add items and checkout).
Follow this process:
Step 1 — Plan (do this first, before writing any code)
Analyse the feature request and produce a short plan covering:
- Pages needed — list each route and its purpose
- State module(s) needed — list each store and its key data/actions
- Component(s) needed — list any new reusable components
- Nav links — does
MenuLayoutsidebar need a new link? - Tests — what E2E scenarios cover the happy path?
Present the plan to the developer and wait for confirmation before proceeding.
Step 2 — Implement
Execute the plan in this order:
-
State module(s) — create
src/state/<name>.jsusingcreateStore(reactive). Export as singleton. See existingsrc/state/userState.jsas the reference pattern. -
Component(s) — create each in
src/components/<Name>.js; import them directly from their files where used (there is no barrel). -
Pages — create each in
src/pages/<path>.js. Structure:import { html } from '@arrow-js/core' import { useMeta } from '../framework/index.js' export const meta = { layout: 'menu', title: 'Page Title' } function FeaturePage() { useMeta({ title: 'Page Title' }) return html`...` } export default FeaturePage -
Nav link — if needed, add a
Linkentry tosrc/layouts/MenuLayout.jsmatching the pattern of existing nav links. -
E2E test — create
tests/e2e/<feature>.test.jscovering the main user flow. Use role-based Playwright selectors; adddata-testidattributes where needed.
Step 3 — Verify
Run npm run dev and confirm the feature works end-to-end in the browser. Then run the full gate and fix any failures before reporting done:
npm run typecheck && npm test && npm run test:e2e
Arrow.js rules (apply throughout)
- Wrap reactive values in
() =>inside templates - No
<!-- -->HTML comments insidehtml`...`template literals - Use
aria-disabled+ CSS for disabled states, never.disabled="${...}" - Use
.key(uniqueId)on components rendered inside loops - Annotate exported functions and props with JSDoc
@param/@returns— strictcheckJsis enforced and untyped params failnpm run typecheck
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.
- 3d ago First seen · 57 lines · 0 tokens per session scan A 5dba6055cc57
add-feature is a command published in the GitHub repository go4cas/quiver (5 stars, last pushed 1mo ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 598 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.