Borrowing it
Nothing to install: this file belongs to beel-collab/presets.dev. 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/beel-collab/presets.dev/main/release/react-native/native/copilot/.github/instructions/react-native.instructions.mdgit clone --depth 1 https://github.com/beel-collab/presets.devWrote 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/instructions/beel-collab/presets.dev/react-native)<a href="https://agentmods.dev/instructions/beel-collab/presets.dev/react-native"><img src="https://agentmods.dev/badge/instructions/beel-collab/presets.dev/react-native/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/instructions/beel-collab/presets.dev/react-native"><img src="https://agentmods.dev/badge/instructions/beel-collab/presets.dev/react-native.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 | $0.00772 | $0.00772 |
| Opus 5.5 | $0.00309 | $0.00309 |
| Sonnet 5.5 | $0.00154 | $0.00154 |
| Haiku 4.5 | $0.00077 | $0.00077 |
Grade A, and why
presets.dev react-native.instructions.md 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 today.
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 — 75 lines — stays where its author put it; the contents beside it link to each section on GitHub.
React Native Copilot Instructions: Expo, Navigation and Native Lifecycle
Path-specific Copilot instructions for React Native. They apply through applyTo and leave .github/copilot-instructions.md in place.
Updated for React Native 0.88.1, Nov 2026
Do not upgrade dependencies or the framework version unless the task asks.
Project shape
Read app.json or app.config, the navigation library, and whether the app is Expo or a bare workflow. Follow that. Screens live where the navigator already registers them. Platform files (ios, android, .native) stay the split the repo uses.
A new native module or config plugin is a product decision. Do not add one to solve a JavaScript problem.
Components and state
The React rules still apply: derive values during render, clean up effects, and do not store props in state. In a native stack, pushing another screen does not unmount the one underneath. Focus-owned work uses useFocusEffect and returns a cleanup that runs on blur. Effect cleanup runs when the screen actually unmounts, which is later, often after it is popped. Do not treat blur as unmount.
After await, check that the screen is still focused before you set state or navigate. A request started on focus is cancelled in the focus cleanup.
Platform behavior
Branch on Platform.OS for a real platform difference, not for a style you can share. A web preview in Expo is not a phone. Do not call window, document, or a DOM layout API.
Permissions are requested at the moment of use, with a reason the platform stores already show. Handle the denial. Do not assume a permission granted in the simulator is granted on a device.
Safe area, keyboard, and back behavior come from the libraries the app already uses. A fixed padding that ignores the inset will collide with the notch or the gesture bar.
Navigation and data
Register screens in the existing navigator. Pass serializable params. Do not pass functions or class instances through route params.
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.
- today First seen · 75 lines · 772 tokens per session scan A 7d249bff0f82
presets.dev react-native.instructions.md is an instructions file published in the GitHub repository beel-collab/presets.dev (3 stars, last pushed yesterday), licensed MIT. It adds 772 tokens to every session, about $0.0031 per session on Opus 5.5. 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 2026-11-13.
presets.dev react-native.instructions.md compared with instructions from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| presets.dev react-native.instructions.mdbeel-collab/presets.dev | Instructions file | 3 | yesterday | MIT | A | 772 | GitHub Copilot |
| vscode buildNext.instructions.mdmicrosoft/vscode | Instructions file | 195k | today | MIT | A | 9,719 | GitHub Copilot |
| next.js AGENTS.mdvercel/next.js | Instructions file | 143k | today | MIT | A | 7,461 | Codex, OpenCode |
| vscode oss-third-party-notices.instructions.mdmicrosoft/vscode | Instructions file | 195k | today | MIT | A | 5,685 | GitHub Copilot |
| langchain AGENTS.mdlangchain-ai/langchain | Instructions file | 149k | today | MIT | A | 4,680 | Codex, OpenCode |
| vscode copilot-instructions.mdmicrosoft/vscode | Instructions file | 195k | today | MIT | A | 3,086 | GitHub Copilot |
| deepseek-harness AGENTS.mddeepseek-ai/deepseek-harness | Instructions file | 280k | 2d ago | MIT | A | 4,325 | Codex, OpenCode |