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 skills add Vibe-Marketer/plugins-and-skills --skill expo-docsgit clone --depth 1 https://github.com/Vibe-Marketer/plugins-and-skillsWrote 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/skills/vibe-marketer/plugins-and-skills/expo-docs)<a href="https://agentmods.dev/skills/vibe-marketer/plugins-and-skills/expo-docs"><img src="https://agentmods.dev/badge/skills/vibe-marketer/plugins-and-skills/expo-docs/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/skills/vibe-marketer/plugins-and-skills/expo-docs"><img src="https://agentmods.dev/badge/skills/vibe-marketer/plugins-and-skills/expo-docs.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 | $0.00048 | $0.01268 |
| Opus 5 | $0.00024 | $0.00634 |
| Sonnet 5 | $0.00010 | $0.00254 |
| Haiku 4.5 | $0.00005 | $0.00127 |
Grade A, and why
expo-docs 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 8d 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 — 134 lines — stays where its author put it; the contents beside it link to each section on GitHub.
file: expo-application.md name: Expo Application description: A universal library that provides information about the native application's ID, app name, and build version at runtime.
file: expo-audio.md description: A library that provides an API to implement audio playback and recording in apps.
file: expo-av.md description: A library that provides an API to implement audio playback and recording in apps.
file: barometer.md A library that provides access to device's barometer sensor.
file: battery.md description: A library that provides battery information for the physical device, as well as corresponding event listeners.
file: expo-blob.md description: A web standards-compliant Blob implementation for React Native.
file: blur-view.md description: A React component that blurs everything underneath the view.
file: brightness.md
description: A library that provides access to an API for getting and setting the screen brightness.
file: calendar.md description: A library that provides an API for interacting with the device's system calendars, events, reminders, and associated records.
file: camera.md A React component that renders a preview for the device's front or back camera.
file: cellular.md An API that provides information about the user's cellular service provider.
file: clipboard.md A universal library that allows getting and setting Clipboard content
file: contacts.md A library that provides access to the phone's system contacts.
file: crypto.md A universal library for crypto operations.
file: device.md A universal library provides access to system information about the physical device.
file: device-motion.md DeviceMotion from expo-sensors provides access to the device motion and orientation sensors.
file: document-picker.md A library that provides access to the system's UI for selecting documents from the available providers on the user's device.
file: file-system.md expo-file-system provides access to files and directories stored on a device or bundled as assets into the native project.
file: glass-effect.md React components that render native iOS liquid glass effect using UIVisualEffectView. Supports customizable glass styles and tint color.
file: gl-view.md
A library that provides GLView that acts as an OpenGL ES render target and provides GLContext.
file: gyroscope.md A library that provides access to the device's gyroscope sensor.
file: image-picker.md A library that provides access to the system's UI for selecting images and videos from the phone's library or taking a photo with the camera.
file: keep-awake.md A React component that prevents the screen from sleeping when rendered.
file: light-sensor.md LightSensor from expo-sensors provides access to the device's light sensor to respond to illuminance changes.
file: linear-gradient.md expo-linear-gradient provides a native React view that transitions between multiple colors in a linear direction.
file: live-photo.md A library that allows displaying Live Photos on iOS.
file: location.md A library that provides access to reading geolocation information, polling current location or subscribing location update events from the device.
file: mail-composer.md A library that provides functionality to compose and send emails with the system's specific UI.
file: maps.md A library that provides access to Google Maps on Android and Apple Maps on iOS.
file: mesh-gradient.md A module that exposes MeshGradient view from SwiftUI to React Native.
file: pedometer.md A library that provides access to the device's pedometer sensor.
What ships with it
43 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
- barometer.md 607 B
- battery.md 739 B
- blur-view.md 628 B
- brightness.md 664 B
- calendar.md 1.2 KB
- camera.md 994 B
- cellular.md 613 B
- clipboard.md 847 B
- contacts.md 985 B
- crypto.md 725 B
- device-motion.md 859 B
- device.md 775 B
- document-picker.md 797 B
- expo-application.md 1013 B
- expo-audio.md 935 B
- expo-av.md 1.0 KB
- expo-blob.md 660 B
- file-system.md 1.3 KB
- gl-view.md 811 B
- glass-effect.md 2.2 KB
- gyroscope.md 528 B
- image-picker.md 992 B
- keep-awake.md 670 B
- light-sensor.md 620 B
- linear-gradient.md 761 B
- live-photo.md 694 B
- location.md 1.3 KB
- mail-composer.md 785 B
- maps.md 1.0 KB
- mesh-gradient.md 662 B
- pedometer.md 740 B
- print.md 707 B
- react-native-gesture-handler.md 2.7 KB
- react-native-reanimated.md 5.1 KB
- react-native-skia.md 3.7 KB
- router-native-tabs.md 1.0 KB
- router.md 1.2 KB
- screen-capture.md 918 B
- screen-orientation.md 939 B
- secure-store.md 1.0 KB
- sharing.md 506 B
- sms.md 656 B
- store-review.md 734 B
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.
- 8d ago First seen · 134 lines · 48 tokens per session scan A c3314942f47b
expo-docs is a skill published in the GitHub repository Vibe-Marketer/plugins-and-skills (2 stars, last pushed 6mo ago), licensed MIT. It adds 48 tokens to every session and 1,268 once invoked, about $0.0002 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 2026-08-31.
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