Deposit QR

Use this skill to create a wallet-scannable QR code for sending a coin or ERC-20 token to a Superior-managed EVM wallet address on a named chain.

This is for funding the wallet itself. It is not the same as a venue-specific deposit intent. For Lighter, a user may first need USDC in a payer wallet, but the Lighter account still requires POST /v3/portfolio/lighter/deposit to get the Lighter CCTP intent address.

For external bridge/provider flows such as Relay, Robinhood Chain USDG, MetaMask Mobile bridge links, or prefilled third-party deposit URLs, use skills/external-deposit instead. Do not use this primitive to encode arbitrary bridge calldata, approvals, or contract deposit calls into transaction QRs.

Required Inputs

Ask for or verify all four fields:

• Destination wallet address, for example 0x1111111111111111111111111111111111111111
• Chain, for example arbitrum, base, avalanche, polygon, or ethereum
• Asset, for example USDC, USDC.e, ETH, AVAX, MATIC, or a token contract address
• Amount

Never guess the chain. The same address can exist on many EVM chains, and sending a token on the wrong chain can strand funds.

Safety Rules

• Do not request private keys, seed phrases, passwords, or exchange credentials.
• Show the destination address, chain, asset, token contract, and amount before presenting the QR code.
• Warn that the user must send the correct asset on the correct chain.
• For ERC-20 tokens, include the token contract address in the summary.
• For wallet compatibility, provide both the EIP-681 QR and a plain-address fallback QR.
• Do not claim a deposit arrived. Verify with the relevant chain explorer, wallet balance, or Superior Trade API after the user sends funds.
• Do not use MetaMask deeplinks or QR codes for arbitrary contract calldata. This skill only covers native-token and ERC-20 transfer payment URIs.

QR Generator

Use the bundled script:

node skills/v3/primitives/deposit-qr/scripts/create-deposit-qr.mjs \
  --address 0x1111111111111111111111111111111111111111 \
  --chain arbitrum \
  --asset USDC \
  --amount 5

It prints JSON with:

• payment_uri — EIP-681 URI for the requested token transfer
• qr_url — hosted QR image URL for the payment URI
• plain_address_qr_url — fallback QR image URL containing only the destination address
• summary — human-readable chain, asset, token, amount, and destination

Display the QR in Markdown when the client supports images:

![Deposit QR](https://quickchart.io/qr?size=360&text=...)

Example: Fund a Superior Wallet with Arbitrum USDC

node skills/v3/primitives/deposit-qr/scripts/create-deposit-qr.mjs \
  --address 0x1111111111111111111111111111111111111111 \
  --chain arbitrum \
  --asset USDC \
  --amount 5

Tell the user:

Deposit QR Summary:
* Destination: 0x1111111111111111111111111111111111111111
* Chain: Arbitrum One
* Asset: native USDC
* Token contract: 0xaf88d065e77c8cC2239327C5EDb3A432268e5831
* Amount: 5 USDC

Scan the QR with a wallet that supports Arbitrum token-transfer URIs. If the wallet does not prefill the token transfer correctly, use the plain address fallback and manually select Arbitrum native USDC.

Common Mistakes

• Using this QR as the Lighter intent address. The destination here is the Superior wallet, not the Lighter deposit intent.
• Omitting the chain. A plain address QR alone does not specify Arbitrum vs Base vs Avalanche.
• Using Ethereum mainnet USDC when the workflow needs Arbitrum/Base/Avalanche USDC.
• Assuming every wallet supports ERC-20 EIP-681 transfer URIs. Always provide the plain-address fallback.
• Using this primitive for Relay or other bridge UIs. Use skills/external-deposit for prefilled bridge links and quote-backed external wallet flows.

Next Step for Lighter

After the wallet has the correct USDC, use the lighter skill to create the Lighter CCTP deposit intent:

POST /v3/portfolio/lighter/deposit

That endpoint returns the actual Lighter intent address to receive the USDC transfer for venue credit.