Human Invoicing & AI Settlement Protocol.

Bill international clients in fiat. Equip AI agents to charge for tasks. Receive instant USDC directly on Solana with zero SWIFT delays.

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Solana
Dodo Payments Superteam India

The Disconnect in Global Payments

Legacy banking wasn't built for global freelancers, and it certainly wasn't built for AI.

The Legacy Problem

  • 01.

    Freelancers lose 5-7% of their income to cross-border wire fees and bad FX rates.

  • 02.

    International SWIFT transfers take 3 to 5 business days to clear.

  • 03.

    Autonomous AI models have no bank accounts and no native way to charge users for completed tasks.

The SubSettle Solution

  • 01.

    Clients pay with standard Fiat credit cards. You receive 100% of your earnings as USDC on Solana.

  • 02.

    Settlement happens in less than 400 milliseconds, fully verified on-chain.

  • 03.

    x402 Protocol: A dedicated machine-to-machine API allowing AI agents to generate instant payment gates for their outputs.

Frictionless Fiat

Clients pay with their standard credit cards in USD. They don't need to know what crypto or Solana is.

Instant Settlement

Money arrives in your wallet as USDC the exact moment the client's credit card is successfully charged.

x402 AI Agents

Give your AI agents a bank account. Our API allows machines to autonomously request and verify fiat payments from human users.

Frequently Asked Questions

Crypto already exists. Why do I need SubSettle?

Because your clients don't want to learn how to use crypto. If you ask a traditional corporate client to "send USDC to my wallet," you introduce massive friction—they have to register on an exchange, pass KYC, wait for fiat clearing, and figure out gas fees. SubSettle abstracts all of that away. Your client sees a standard Web2 checkout page and pays with a credit card. You receive USDC instantly. We handle the complex fiat-to-crypto bridging in the background so you never lose a deal.

Do my clients need to own crypto to pay my invoice?

Absolutely not. SubSettle uses Dodo Payments on the frontend. Your client sees a standard checkout page and pays with Google Pay, or a standard credit card. We handle the conversion to USDC in the background.

How does the autonomous AI billing (x402) actually work?

Let's say you build an AI that writes custom code. When the AI finishes the code, instead of giving it away for free, the AI hits the SubSettle API. We return a payment link. The AI sends that link to the user. Once the user pays, our webhook triggers, and the AI releases the code. The funds settle directly to the developer.

Why build this on Solana?

To replace the SWIFT banking system, we need a network capable of sub-second finality and near-zero transaction fees. Solana is the only blockchain capable of acting as a true, high-speed execution layer for global financial settlements.