React Native Wallet Link Skill

CRITICAL RULES

1. Read reference files FIRST. When the user's request involves any topic in the reference table below, read those files before doing anything else — before writing code, before making decisions. Briefly mention which files you are reading so the user can confirm the skill is active (e.g., "Reading wallet link API reference...").
2. Information priority for VeChain topics: (a) Reference files in this skill — always the primary source. (b) VeChain MCP tools — use @vechain/mcp-server for on-chain data, transaction building, and live network queries; use Kapa AI MCP for VeChain documentation lookups. (c) Web search — only as a last resort, and only for topics NOT covered in the reference files.
3. Prefer working directly in the main conversation for VeChain tasks. Plan mode and subagents do not inherit skill context and may fall back to web search instead of using reference files.
4. After compaction or context loss, re-read this SKILL.md to restore awareness of the reference table and operating procedure before continuing work.

Scope

Use this Skill for React Native dApp development integrating with VeWorld wallet:

• Installing and configuring @vechain/react-native-wallet-link
• VeWorldProvider setup with deep link handling and event callbacks
• useVeWorldWallet hook — connect, disconnect, sign certificates, sign typed data, sign and send transactions
• NaCl key pair generation, encrypted communication, payload decryption
• Deep link configuration for iOS (URL schemes, universal links) and Android (intent filters)
• State management for wallet sessions (key pair, session, address persistence)
• Multi-clause transaction signing via VeWorld
• Certificate signing (identification, verification, attestation)
• EIP-712 typed data signing
• Error handling for wallet responses
• Multi-network support (mainnet, testnet, solo)

For related topics, see companion skills:

• vechain-core — Core SDK usage, fee delegation, multi-clause patterns, dual-token model
• vechain-kit — VeChain Kit and dapp-kit packages: hooks, components, wallet connection, social login
• frontend — Generic frontend patterns: React Query, Turborepo, state management, Chakra UI
• smart-contract-development — Solidity, Hardhat, testing, security

Default stack

Layer	Default	Alternative
Wallet link	@vechain/react-native-wallet-link	—
SDK	@vechain/sdk-core + @vechain/sdk-network	—
Framework	Expo (React Native)	bare React Native
State	Zustand + AsyncStorage	any persisted store
Node	Node 20 LTS (managed via nvm)	—

Operating procedure

1. Check Node version

Before installing dependencies or running any command:

• Check if .nvmrc exists in the project root. If yes, run nvm use.
• If .nvmrc does not exist, create one with 20 (Node 20 LTS) and run nvm use.

2. Detect project structure

• Expo project → use expo-linking for deep link handling
• Bare React Native → use react-native Linking API directly
• Check for existing state management (Zustand, Redux, Context) and match it

3. Clarify before implementing

When the user's request is ambiguous or could be solved multiple ways, ask before building. Separate research from implementation:

• Which network? (mainnet/testnet/solo)
• Which operations? (connect only, signing, transactions)
• State management preference?
• Deep link scheme name?

4. Implement with VeChain-specific correctness

• Always install peer dependencies: @vechain/sdk-core, @vechain/sdk-network, react-native-get-random-values, events
• Import react-native-get-random-values before any NaCl usage — required for crypto in React Native
• Network: always explicit (mainnet/testnet/solo) via the node URL passed to VeWorldProvider
• Key pairs: generate with nacl.box.keyPair(), store Base64-encoded via encodeBase64() from tweetnacl-util
• Session persistence: persist keyPair, veWorldPublicKey, address, and session across app restarts
• Error handling: always check for errorCode in wallet responses before processing decrypted data
• Deep links: configure platform-specific URL schemes so VeWorld can redirect back to the app

5. Verify and deliver

A task is not complete until all applicable gates pass:

1. Code compiles — no build errors (npx expo start or equivalent succeeds)
2. Deep links configured — iOS Info.plist and/or Android intent filters set up
3. Risk notes documented — any signing, fee, or token-transfer implications are called out

Then provide:

• Files changed + diffs
• Install/build commands
• Deep link scheme configuration steps
• Risk notes for signing, fees, token transfers

Reference files

Read the matching files BEFORE doing anything else. See Critical Rules above.

Topic	File	Read when user mentions...
API and hook reference	references/wallet-link-api.md	useVeWorldWallet, VeWorldProvider, connect, disconnect, signCertificate, signTypedData, signAndSendTransaction, key pair, encrypt, decrypt
Deep link and platform setup	references/deep-link-setup.md	deep link, URL scheme, universal link, iOS, Android, intent filter, redirect, Expo linking, app.json
Example integration	references/example-integration.md	example, demo, full app, tutorial, how to use, getting started, Zustand, state management, VET transfer