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 rules/nerds-odd-e/doughnut/frontendgit clone --depth 1 https://github.com/nerds-odd-e/doughnutWhat 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 | $0.00028 | $0.00635 |
| Opus 5 | $0.00014 | $0.00318 |
| Sonnet 5 | $0.00006 | $0.00127 |
| Haiku 4.5 | $0.00003 | $0.00064 |
Grade A, and why
frontend 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 2d 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 — 38 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Frontend
Vue 3 + TypeScript in frontend/src/. Tests in frontend/tests/. Import the backend client from @generated/donut-backend-api/sdk.gen.
Cursor auto-attaches frontend-component.mdc, frontend-testing.mdc, frontend-api.mdc, and frontend-storybook.mdc when matching files are in context — do not fetch them up front. Lint: linting_formating.mdc.
Commands
CURSOR_DEV=true nix develop -c pnpm frontend:test
Spec paths are relative to frontend/. Do not pass -- before the path (Vitest skips file filtering). Prefer the full frontend unit suite; a single file only while iterating on that file.
Components
<script setup lang="ts">. PascalCase.vuefiles; testsComponentName.spec.ts.- DaisyUI uses the
daisy-prefix (daisy-btn,daisy-card). Unprefixed Tailwind utilities. No Bootstrap. Scoped SCSS. Lucide via@lucide/vue(currentColor,:sizeor Tailwindsize-*). - Derived state:
computed, not arefthat mirrors props/store.refonly for owned mutable state (input, toggles). - Modals:
Modalfrom@/components/commons/Modal.vue. In tests, querydocument.querySelector("dialog"). - Routing: name and params (helpers such as
noteShowLocation); href only vianoteShowHref(compiled from the named location). ADR 0005.
API
User actions: apiCallWithLoading(() => Controller.method(...)) from @/managedApi/clientSetup. Wrapped { data, error, request, response }. Check !error before using data. Silent refresh: call the SDK directly (no loading bar or error toast).
{ blockUi: true } for a whole-UI blocker. { blockUi: true, cancelable: true } only for allowlisted read-only sites gated by frontend/tests/managedApi/cancelableAllowlist.spec.ts. Do not opt mutations into cancelable. Do not add component-local LoadingModal refs.
Loading UI that means unfinished work marks data-app-busy (LoadingThinBar, ContentLoader, LoadingModal). E2E: waitUntilAppIsNotBusy(). Validation 400: toOpenApiError(error).
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.
- 2d ago First seen · 38 lines · 28 tokens per session scan A 2ae8fb0f18fe
frontend is a cursor rule published in the GitHub repository nerds-odd-e/doughnut (49 stars, last pushed 2d ago), licensed MIT. It adds 28 tokens to every session and 635 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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