What is expo-targets AGENTS.md?

A repository guide that tells coding agents how the Expo Targets project is organized and what rules it follows. Expo Targets adds native iOS and Android features, such as widgets and share extensions, to React Native apps.

Use it when modifying Expo Targets code, deciding where platform-specific logic belongs, updating documentation, or working around generated and sealed areas.

It gives agents the project's source of truth, including protected generated files, documentation rules, and platform boundaries, reducing unsafe or inconsistent changes.

How csark0812/expo-targets configures Codex and OpenCode

Reuse

Borrowing it

Nothing to install: this file belongs to csark0812/expo-targets. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file

curl -O https://raw.githubusercontent.com/csark0812/expo-targets/main/AGENTS.md

Clone the repo

git clone --depth 1 https://github.com/csark0812/expo-targets

Made for: Codex, OpenCode.

Wrote 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.

README.md

[![agentmods](https://agentmods.dev/badge/instructions/csark0812/expo-targets/agents-md.svg)](https://agentmods.dev/instructions/csark0812/expo-targets/agents-md)

Your own site

<a href="https://agentmods.dev/instructions/csark0812/expo-targets/agents-md"><img src="https://agentmods.dev/badge/instructions/csark0812/expo-targets/agents-md.svg" alt="Measured on agentmods" height="20"></a>

Per session 670 This file is loaded in full into every session.

When invoked 670 The same file — it is already loaded in full.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

Origin original No closer match found in the catalogue.

Token cost

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	$0.00670	$0.00670
Opus 5	$0.00335	$0.00335
Sonnet 5	$0.00134	$0.00134
Haiku 4.5	$0.00067	$0.00067

Measured 7d ago against content hash f15e72aba81f, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

expo-targets 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 7d 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.

AGENTS.md · 50 lines

How it starts

The opening of the file, as written. The whole thing — 50 lines — stays where its author put it; the contents beside it link to each section on GitHub.

AGENTS

Source of truth for agent cold-start in this repo.

Humans: see CONTRIBUTING.md for install, CI, Biome, and release.

Product posture

expo-targets owns Expo’s negative space: React Native share / action / clip / messages extensions, App Clips, stickers, wallet, native WidgetKit + Live Activities, and other Apple targets. Android is an API-ceiling dual spine (~40% of types): W0–W3 shipped (widgets through DocumentsProvider, Autofill, IME, CallScreening, Print, VpnService). The ceiling also includes W4-in-1.0 partials and Wear strong (watch / watch-widget).

Native iOS widgets + Live Activities → this library (docs/widgets.md). Official expo-widgets is an alternate React / Expo-UI path. Do not dual-generate WidgetKit in one app (same one-generator rule if Expo ships Android widgets).
Android ledger → TYPE_CHARACTERISTICS.androidBucket / androidComponent in the plugin domain.
Do not add orphan config-only extension types (iOS or Android). See docs/deprecations.md and docs/limits.md.

Sealed zones

Zone	Path	Policy
CNG sealed	`ios/<App>/ExpoTargetsGenerated/`	Always rewrite; gitignored; never edit
User deepen	`targets/<name>/ios/`	Commit; scaffolder creates once

Docs SSOT

Canonical docs are listed in .skeleton/registry.md. Edit those files only. Keep **Source of truth for** banners and doc-meta comments.

Validation:

bun run audit:self
bun run validate:changed

Safe commands

bun install (needs NODE_AUTH_TOKEN for @csark0812/devicewright — AUTH.md)
bun run lint, bun run typecheck, bun run build
bun run test:unit, bun run test:integration, bun test (package-scoped)
Skeleton: bun run audit:self, bun run validate:changed
Do not start, stop, or restart dev servers (bun run dev, expo start, and similar)
Devicewright matrix / expo run:ios: operator-only (humans boot Simulator). Agents must not claim CI greens for Devicewright.

Read the full file on GitHub · 50 lines

Changes

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.

7d ago First seen · 50 lines · 670 tokens per session scan A f15e72aba81f

Subscribe to this mod's changes

expo-targets AGENTS.md is an instructions file published in the GitHub repository csark0812/expo-targets (96 stars, last pushed 5d ago), licensed MIT. It adds 670 tokens to every session, about $0.0034 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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