Charge an AI agent per API call.
Give your agent a budget.
The payment layer for the agentic economy: businesses monetize APIs over the x402 standard, and owners delegate bounded, revocable budgets to their agents through self-custodial Agent Spending Accounts on Stellar. Settled in USDC in seconds, with a reconciled fiat balance through Wirex.
From agent request to money on the books
One SDK on the x402 standard, with every spending rule enforced on-chain and a clean path to fiat.
Delegate a budget
Create an Agent Spending Account in one guided step, with passkeys and no seed phrases, and give your agent a policy: caps, approved merchants, expiry.
Your agent pays per call
The agent buys data, inference or services over x402. Each payment is authorized against your policy on-chain. Out-of-policy spends fail before funds move.
Settled in seconds
Payments settle in USDC/EURC on Stellar in about 5 seconds at sub-cent cost: the economics that make per-call micropayments viable.
Fiat on the books
Merchants receive a reconciled fiat balance through Wirex's regulated rails, with every ledger entry mapped to its on-chain transaction.
Agent Spending Accounts
AI agents are becoming economic actors, but nobody has a safe account to give them. The Agent Spending Account is a self-custodial smart account on Soroban that delegates a bounded budget to your agents, with every rule enforced on-chain and revocable in one message.
Your research agent, on a budget
Talk to an agent on Telegram that buys the market data each answer needs (sentiment, on-chain analytics, token scans) paying cents per query from your Agent Spending Account. You see every spend and can revoke with one message.
AI spend with controls and an audit trail
Your business agents pay for the AI services they consume, like image generation and inference, from a company account with budgets, allowlists and per-use expense reporting. No wallets, no keys, no crypto expertise.
Live in an afternoon
Declare paid endpoints on the merchant side; point your agent at them on the client side. The SDK handles challenges, signatures, retries and settlement.
app.use(x402({
"/market-data/*": { price: "0.25 USDC" },
"/inference/*": { price: "0.05 USDC" }
}));const agent = new AgentWallet({
account: asaAddress, // Agent Spending Account
signer: dfnsAgentKey // bounded key, policy on-chain
});
const res = await agent.fetch(url); // 402 handledAn open primitive, built on proven rails
The Agent Spending Account contracts are open source on Soroban. Built by Vottun with Wirex as lead partner (live USDC/EURC settlement on Stellar, principal member of Visa and Mastercard) and DFNS MPC key infrastructure.