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.
git clone --depth 1 https://github.com/blockmatic/basilicWrote 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/rules/blockmatic/basilic/expo)<a href="https://agentmods.dev/rules/blockmatic/basilic/expo"><img src="https://agentmods.dev/badge/rules/blockmatic/basilic/expo/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/rules/blockmatic/basilic/expo"><img src="https://agentmods.dev/badge/rules/blockmatic/basilic/expo.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 | $0.00000 | $0.00376 |
| Opus 5.5 | $0.00000 | $0.00150 |
| Sonnet 5.5 | $0.00000 | $0.00075 |
| Haiku 4.5 | $0.00000 | $0.00038 |
Grade A, and why
expo 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 1mo 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.
What it actually says
Expo Router
File-based routing: src/app/, _layout.tsx, route groups (group). Routing patterns: @.agents/skills/expo-router. _layout cannot be DOM component—see @.agents/skills/expo-dom
NativeTabs (SDK 55+)
Use NativeTabs.Trigger.Icon, NativeTabs.Trigger.Label, NativeTabs.Trigger.Badge (not separate imports). SDK upgrades: @.agents/skills/expo-upgrade
React Native
Primitives only: View, Text, Pressable, ScrollView—no HTML elements
Styling
Tailwind via NativeWind v5 + react-native-css. Use className on View, Text, Pressable, etc. StyleSheet for complex cases. Platform styling: @.agents/skills/expo-native-ui
Platform extensions
Use .web.tsx, .native.tsx for platform-specific code
Path aliases
@/* → src/, @/assets/* → assets/
Hooks
Kebab-case filenames, collocated in hooks/. See @.cursor/rules/frontend/react-hooks.mdc
React Compiler
Enabled in app.json—no manual useMemo/useCallback. Aligns with @.cursor/rules/frontend/react-hooks.mdc
EAS / CI
EAS builds: mobile-build (manual), mobile-preview (main), mobile-pr-preview (EAS Update). EXPO_TOKEN required. Workflows: @.agents/skills/eas-workflows; OTA updates: @.agents/skills/eas-update; store release: @.agents/skills/eas-app-stores
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.
- 1mo ago Changed d663aa86bb58
- 1mo ago First seen · 33 lines · 0 tokens per session scan A 12c7d37301a5
expo is a cursor rule published in the GitHub repository blockmatic/basilic (90 stars, last pushed 13d ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 376 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 2026-09-03.
Other cursor rules, from other repositories
upgrade-tests
// ✅ CORRECT: Upgrade package pattern await using ctx = testReactResource(appRouter, { server: { // server configuration }, client(opts) { return { links: [ httpLink({ url: opts.httpUrl, // client configuration }), ], }; }, }).
react-chakra-ui---typescript-usage
Guidance for using TypeScript with Chakra UI components in React. It covers typed component props, custom themes, editor support, and avoiding the unsafe any type.
05-web-development
Use the following format for code blocks.
hatch3r-component-conventions
Component structure, styling tokens, loading/error/empty states, form validation timing, and accessible label patterns for Vue, React, and JSX.
guidelines
Cursor rule "guidelines" from vucinatim/air-jam, covering tooling, conventions, refactoring, tips and notes.
aphrodite
Frontend specialist — React 19, TypeScript strict, WCAG accessibility, responsive design, TDD, modern API patterns, deprecated npm detection. Calls apollo for discovery, sends to themis for review.