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 instructions/callstack/react-native-testing-library/agents-mdgit clone --depth 1 https://github.com/callstack/react-native-testing-libraryWhat 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 | $0.00288 | $0.00288 |
| Opus 5 | $0.00144 | $0.00144 |
| Sonnet 5 | $0.00058 | $0.00058 |
| Haiku 4.5 | $0.00029 | $0.00029 |
Grade A, and why
react-native-testing-library AGENTS.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 yesterday.
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
Code Assistant Context
@testing-library/react-native is a TypeScript/Jest library for testing React Native components with user-focused testing patterns.
[!IMPORTANT] Never run git commands that create commits, push, or modify the index/history (
git commit,git push,git add,git rm,git reset,git rebase,git merge,git stash,git tag, etc.). Only make working-tree changes and read-only git inspections; the human stages and commits. See Git, releases, and PR workflow.
- Package manager:
yarn([email protected]) - Common commands:
yarn testyarn test:ciyarn typecheckyarn lintyarn format:checkyarn buildyarn validate
- Task-specific guidance:
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.
- yesterday First seen · 24 lines · 288 tokens per session scan A fa04f7288182
react-native-testing-library AGENTS.md is an instructions file published in the GitHub repository callstack/react-native-testing-library (3,414 stars, last pushed 19d ago), licensed MIT. It adds 288 tokens to every session, about $0.0014 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.
Other instructions, from other repositories
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lingo.dev CLAUDE.md
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react-native CLAUDE.md
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react-native-typescript-library-starter AGENTS.md
Instructions for kuraydev/react-native-typescript-library-starter, covering agents.md — ai agent instructions, project overview, directory map, commands and conventions.
tamagui CLAUDE.md
Claude Code instructions for tamagui/tamagui, a project described as: Style React fast with 100% parity on React Native, an optional UI kit, and optimizing compiler.
react-native AGENTS.md
Instructions for storybookjs/react-native, a project described as: 📓 Storybook for React Native!