What is expo-ui-swift-ui?

A way to use SwiftUI, Apple's interface framework, inside Expo React Native apps. It provides SwiftUI-style views and modifiers, with a wrapper for placing React Native components inside them.

Use it to install and configure the Expo UI SwiftUI package, build SwiftUI view trees, combine them with React Native views, and check the correct SDK 55 component documentation.

It allows an Expo app to use SwiftUI interface elements while keeping React Native components where needed. A native iOS rebuild is required after installation.

expo-ui-swift-ui — Skill for Claude Code and Codex by ruizrica

Install

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.

Any agent

npx skills add ruizrica/agent-pi --skill expo-ui-swift-ui

Clone the repo

git clone --depth 1 https://github.com/ruizrica/agent-pi

Made for: Claude Code, Codex.

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/skills/ruizrica/agent-pi/expo-ui-swift-ui/github.svg)](https://agentmods.dev/skills/ruizrica/agent-pi/expo-ui-swift-ui)

Your own site

<a href="https://agentmods.dev/skills/ruizrica/agent-pi/expo-ui-swift-ui"><img src="https://agentmods.dev/badge/skills/ruizrica/agent-pi/expo-ui-swift-ui/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.

Your own site · 80×15

<a href="https://agentmods.dev/skills/ruizrica/agent-pi/expo-ui-swift-ui"><img src="https://agentmods.dev/badge/skills/ruizrica/agent-pi/expo-ui-swift-ui.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 25 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 406 The whole file, excluding the scripts and references it only reads on demand.

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

NVIDIA SkillSpector warn 7 Sept 2026

SkillSpector: 2 findings, up to medium

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

medium MCP Rug Pull · line 11
npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.

Fix: Pin the version: npx @scope/[email protected]
medium MCP Rug Pull · line 14
npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.

Fix: Pin the version: npx @scope/[email protected]

How audits are shown

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	$0.00025	$0.00406
Opus 5.5	$0.00010	$0.00162
Sonnet 5.5	$0.00005	$0.00081
Haiku 4.5	$0.00003	$0.00041

Measured 2mo ago against content hash 80b027fc436c, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

expo-ui-swift-ui 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 2mo 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.

Origin

Copies of this mod

3 near-identical copies found in the catalogue:

Expo UI SwiftUI — 98% identical, 4 lines differ
Expo UI SwiftUI — 98% identical, 4 lines differ
expo-ui-swift-ui — 95% identical, 3 lines differ

skills/expo-ui-swift-ui/SKILL.md · 40 lines

What it actually says

The instructions in this skill apply to SDK 55 only. For other SDK versions, refer to the Expo UI SwiftUI docs for that version for the most accurate information.

Installation

npx expo install @expo/ui

A native rebuild is required after installation (npx expo run:ios).

Instructions

Expo UI's API mirrors SwiftUI's API. Use SwiftUI knowledge to decide which components or modifiers to use.
Components are imported from @expo/ui/swift-ui, modifiers from @expo/ui/swift-ui/modifiers.
When about to use a component, fetch its docs to confirm the API - https://docs.expo.dev/versions/v55.0.0/sdk/ui/swift-ui/{component-name}/index.md
When unsure about a modifier's API, refer to the docs - https://docs.expo.dev/versions/v55.0.0/sdk/ui/swift-ui/modifiers/index.md
Every SwiftUI tree must be wrapped in Host.
RNHostView is specifically for embedding RN components inside a SwiftUI tree. Example:

import { Host, VStack, RNHostView } from "@expo-ui/swift-ui";
import { Pressable } from "react-native";

<Host matchContents>
  <VStack>
    <RNHostView matchContents>
      // Here, `Pressable` is an RN component so it is wrapped in `RNHostView`.
      <Pressable />
    </RNHostView>
  </VStack>
</Host>;

If a required modifier or View is missing in Expo UI, it can be extended via a local Expo module. See: https://docs.expo.dev/guides/expo-ui-swift-ui/extending/index.md. Confirm with the user before extending.

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.

2mo ago First seen · 40 lines · 25 tokens per session scan A 80b027fc436c

Subscribe to this mod's changes

expo-ui-swift-ui is a skill published in the GitHub repository ruizrica/agent-pi (278 stars, last pushed 3d ago), licensed MIT. It adds 25 tokens to every session and 406 once invoked, about $0.0001 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 2026-08-30.

Frontend Mobile React

expo-ui-swift-ui next to 6 skills from other repositories
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expo-ui-swift-uiruizrica/agent-pi	Skill	278	3d ago	MIT	A	25	Claude Code, Codex
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vercel-react-native-skillsfcakyon/claude-codex-settings	Skill	1.2k	yesterday	Apache-2.0	A	57	Claude Code