developer-center

Build, scaffold, convert, validate, audit, or ship a Nimiq Pay mini app. Covers the Nimiq provider (@nimiq/mini-app-sdk) and the Ethereum provider (window.ethereum), ERC-20 tokens (USDT, USDC), supported EVM chains (Polygon, Arbitrum, Base, Optimism, BNB, Sepolia), NIM payments, staking, message signing, and project setup. Use when the user wants to build, create, start, bootstrap, or scaffold a mini app; convert, port, migrate, or adapt an existing web app to run inside Nimiq Pay; add NIM, USDT, or ERC-20 token support; integrate Nimiq Pay wallet features; replace Stripe, PayPal, or MetaMask with Nimiq Pay providers; check, review, validate, or audit a mini app before shipping; or mentions window.ethereum, @nimiq/mini-app-sdk, listAccounts, sendBasicTransaction, wallet_switchEthereumChain, eth_sendTransaction, eth_signTypedData_v4, or balanceOf in a Nimiq context.