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Pay With Locus · USDC wallets on Base

Crypto API Payments

Pay for API calls with USDC stablecoin on Base. Instant settlement, no chargebacks, no currency conversion — the ideal payment rail for machine-to-machine transactions.

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Why crypto is ideal for API payments

Traditional payment methods — credit cards, bank transfers, invoices — were designed for humans. They involve identity verification, fraud detection delays, chargeback risk, and settlement times measured in days. For AI agents making hundreds or thousands of API calls per day, these payment rails are too slow, too expensive, and too friction-heavy. Blockchain-based stablecoin payments solve every one of these problems. USDC on Base settles in under two seconds, costs less than $0.01 in gas fees, has zero chargeback risk, and requires no human identity — just a funded wallet address. This makes stablecoin the natural payment rail for machine-to-machine commerce.

Why USDC specifically

Price stability

USDC is pegged 1:1 to the US dollar and fully backed by reserves held at regulated financial institutions. USDC targets a dollar value, but market prices and redemption availability can vary. Agents can denominate budgets in USDC while accounting for market prices and network fees.

Instant settlement

On Base (Coinbase's Layer 2 network), USDC transfers settle in approximately two seconds. Compare this to credit card settlements (2-3 business days) or bank transfers (1-5 business days). For API payments, instant settlement means the agent gets immediate access.

Near-zero fees

Gas fees on Base are typically under $0.01 per transaction. Credit card processing fees are 2.9% + $0.30. For a $0.01 API call, the credit card fee would be $0.33 — 33x the cost of the API call itself. Blockchain payments make micropayments economically viable.

Programmable

USDC is an ERC-20 token, which means it works natively with smart contracts. Locus's ERC-4337 wallets can enforce spending rules, session key permissions, and policy checks at the protocol level — something impossible with credit cards.

Why Base network

Locus uses Base, the Layer 2 network built by Coinbase. Base inherits Ethereum's security while offering dramatically lower costs and faster transactions. Gas fees are typically under a cent, transactions confirm in seconds, and the network is supported by one of the most trusted names in crypto. USDC on Base is issued natively by Circle (USDC's creator), ensuring the same security guarantees as USDC on Ethereum mainnet. For agent developers, Base provides the reliability and low costs needed for high-frequency micropayments.

Getting USDC on Base

  • •From Coinbase — Buy USDC on Coinbase and withdraw directly to Base. No bridging needed.
  • •Bridge from Ethereum — Use the official Base bridge to move USDC from Ethereum mainnet to Base.
  • •Swap on Base — Use a DEX like Uniswap on Base to swap ETH or other tokens for USDC.

Related resources

Frequently asked questions

Why not pay for API calls with a credit card?

Card fees of 2.9% + $0.30 would cost $0.33 on a $0.01 API call. Gas on Base is typically under $0.01, which makes micropayments viable.

How fast do USDC payments settle on Base?

In about two seconds. Card settlements take 2-3 business days and bank transfers take 1-5 business days.

Is USDC always worth exactly one dollar?

USDC targets a dollar value, but market prices and redemption availability can vary. Agents can budget in USDC while accounting for market prices and network fees.

How do I get USDC on Base?

Buy USDC on Coinbase and withdraw directly to Base, move it from Ethereum with the official Base bridge, or swap for it on a Base DEX like Uniswap.

Fund your wallet with USDCView USDC pricing