react-native

A React Native renderer that turns JSON descriptions into native mobile interfaces. React Native is a framework for building mobile apps with JavaScript or TypeScript, while JSON is a structured text format for describing data and settings.

In plain words
What is it for?
Use it to build mobile component catalogs, define standard or custom components, and display AI-generated or other JSON-based interface specifications in React Native.
Why use it?
It lets an application describe screens, components, data binding, visibility, actions, and changing properties as JSON, then render them on mobile devices.

Skill for Claude CodeCodex

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.

agentmods
npx agentmods add skills/vercel-labs/json-render/react-native
Any agent
npx skills add vercel-labs/json-render --skill react-native
Clone the repo
git clone --depth 1 https://github.com/vercel-labs/json-render

Made for: Claude Code, Codex.

Per session 50 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,567 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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.

ModelPer sessionOnce invoked
Fable 5 $0.00050 $0.01567
Opus 5 $0.00025 $0.00783
Sonnet 5 $0.00010 $0.00313
Haiku 4.5 $0.00005 $0.00157

Measured yesterday against content hash d5dfbc6128d2, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

react-native 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.

skills/react-native/SKILL.md · 188 lines

How it starts

The opening of the file, as written. The whole thing — 188 lines — stays where its author put it; the contents beside it link to each section on GitHub.

@json-render/react-native

React Native renderer that converts JSON specs into native mobile component trees with standard components, data binding, visibility, actions, and dynamic props.

Quick Start

import { defineCatalog } from "@json-render/core";
import { schema } from "@json-render/react-native/schema";
import {
  standardComponentDefinitions,
  standardActionDefinitions,
} from "@json-render/react-native/catalog";
import { defineRegistry, Renderer, type Components } from "@json-render/react-native";
import { z } from "zod";

// Create catalog with standard + custom components
const catalog = defineCatalog(schema, {
  components: {
    ...standardComponentDefinitions,
    Icon: {
      props: z.object({ name: z.string(), size: z.number().nullable(), color: z.string().nullable() }),
      slots: [],
      description: "Icon display",
    },
  },
  actions: standardActionDefinitions,
});

// Register only custom components (standard ones are built-in)
const { registry } = defineRegistry(catalog, {
  components: {
    Icon: ({ props }) => <Ionicons name={props.name} size={props.size ?? 24} />,
  } as Components<typeof catalog>,
});

// Render
function App({ spec }) {
  return (
    <StateProvider initialState={{}}>
      <VisibilityProvider>
        <ActionProvider handlers={{}}>
          <Renderer spec={spec} registry={registry} />
        </ActionProvider>
      </VisibilityProvider>
    </StateProvider>
  );
}

Standard Components

Layout

  • Container - wrapper with padding, background, border radius
  • Row - horizontal flex layout with gap, alignment
  • Column - vertical flex layout with gap, alignment
  • ScrollContainer - scrollable area (vertical or horizontal)
  • SafeArea - safe area insets for notch/home indicator
  • Pressable - touchable wrapper that triggers actions on press
  • Spacer - fixed or flexible spacing
  • Divider - thin line separator

Content

  • Heading - heading text (levels 1-6)
  • Paragraph - body text
  • Label - small label text
  • Image - image display with sizing modes
  • Avatar - circular avatar image
  • Badge - small status badge
  • Chip - tag/chip for categories

Read the full file on GitHub · 188 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.

  1. yesterday First seen · 188 lines · 50 tokens per session scan A d5dfbc6128d2

Subscribe to this mod's changes

react-native is a skill published in the GitHub repository vercel-labs/json-render (16,056 stars, last pushed 3d ago), licensed Apache-2.0. It adds 50 tokens to every session and 1,567 once invoked, about $0.0003 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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