Create a payment link in seconds. Get paid in any currency, on any chain, from anywhere in the world.
Nexus Pay is a decentralized invoicing and payment gateway built for the modern economy — freelancers, merchants, and AI agents who need to send and receive money across borders without friction, fees, or banks.
A user creates a Payment Link in seconds. The payer opens the link and pays using their preferred chain. The merchant receives stablecoins instantly. No bank account required. No intermediaries.
Cross-border payments are broken:
- Freelancers wait 5–10 days for international wire transfers
- Merchants lose 3–5% to card network fees
- Crypto payments require technical knowledge most users don't have
- No single tool works across chains without switching wallets and apps
Nexus Pay abstracts all of that away into one link.
nexuspay.xyz/pay/invoice_abc123
The payer clicks, picks their preferred chain, confirms — done. The merchant sees the payment settle in real time.
| Chain | Status | Best For | Asset |
|---|---|---|---|
| Tempo | ✅ Mainnet Live | Institutional & B2B payments | USDC |
| Base | ✅ Mainnet Live | Retail & social payments | USDC |
| Arc | 🟡 Testnet | Native USDC speed | USDC |
| Solana | 🔜 Coming Soon | Micropayments & point-of-sale | USDC |
| Sui | 🔜 Coming Soon | High-frequency transactions | USDC |
Tempo — built by Stripe and Paradigm — is purpose-built for stablecoins in the real world. For Nexus Pay's primary use case (B2B invoicing, freelancer payouts, merchant settlements), Tempo provides:
- Institutional-grade finality
- Stripe's compliance infrastructure
- Native USDC support with real-world settlement
- Agentic payment compatibility via MPP (Machine Payments Protocol)
Tempo is the backbone. Every other chain is an on-ramp.
| Property | Tempo Mainnet | Base Mainnet | Arc Testnet |
|---|---|---|---|
| Chain ID | 4217 | 8453 | 5042002 |
| RPC | https://rpc.tempo.xyz | https://mainnet.base.org | https://rpc.testnet.arc.network |
| Explorer | https://explore.tempo.xyz | https://basescan.org | https://testnet.arcscan.app |
| USDC | 0x1c7D4B196... | 0x833589fCD6... | Native |
- One-click Payment Links — generate a shareable invoice URL in under 10 seconds
- Multi-chain Checkout — payer selects their preferred chain at checkout
- Real-time Settlement — funds arrive in your wallet, not a custodial account
- No Sign-up for Payers — payers just connect wallet and pay
- Dashboard — track all invoices, payment status, and history
- Real USDC Transfers — ERC-20 token transfers on all supported chains
1. Merchant creates invoice → sets amount, description, wallet address
2. Nexus Pay generates a unique payment link
3. Merchant shares link via email, DM, or embeds in app
4. Payer opens link → connects wallet → selects chain → pays
5. Merchant receives USDC directly to wallet
6. Invoice marked as PAID — both parties get confirmation
- Freelancers billing international clients without a bank account
- Merchants accepting crypto at point-of-sale
- DAOs paying contributors across chains
- AI Agents autonomously settling invoices in agentic workflows
- SaaS products adding crypto billing without building infrastructure
- Frontend: HTML / CSS / JavaScript (vanilla)
- Wallet Connection: MetaMask / window.ethereum (ethers.js v6)
- Payment Rails: Tempo Mainnet, Base Mainnet, Arc Testnet
- Stablecoin: USDC (ERC-20 native transfer)
- Storage: localStorage (invoice state)
- Explorer: https://explore.tempo.xyz
- Payment link generation UI
- Multi-chain checkout flow
- Tempo Mainnet integration (live March 18, 2026)
- Base Mainnet integration
- Arc Testnet integration
- Real USDC ERC-20 transfers (not demo)
- Base builder attribution (base:builder_code)
- Webhook + API for developers
- Mobile-optimized payer experience
- Agent-to-agent payment protocol via MPP
- Arc Mainnet upgrade (when live)
- Fiat off-ramp via Stripe (leveraging Tempo x Stripe infrastructure)
Solo builder. Prev: MetricFlow (on-chain Farcaster analytics, Base). Now going full payments on Tempo.
Base Builder: bc_5s50punj
MIT