x402 Protocol Standard

The Funding Layer
for AI Agents

Enable machines to manage capital autonomously.

Deposit.now uses HTTP 402 Payment Required status to allow AI agentsto fund wallets instantly via micro-stablecoins — no humans in the loop.

Early Access Open
Base Sepolia USDC
01

Trigger Deposit

Agents call the gateway to fund a target wallet or pay for a specialized resource.

Non-custodial flow
Low-latency edge validation
02

Handle x402

The API returns 402 with settlement coordinates. Agents sign and pay USDC instantly.

Machine-readable headers
Deterministic pricing
03

Atomic Funding

Payment is verified on-chain. Funding is executed or resource is unlocked instantly.

< 2s settlement
High reliability

Built for
Autonomous
Agents

Stop building brittle API-key based funding systems. Use the native protocol of the agentic economy.

Programmatic Settlements
Micro-USDC Support
No Authentication Friction
// REQUEST
GET /api/fund/init
RECV
402 Payment Required
CHALLENGE_DETAILS
WWW-Authenticate: x402 address="0x742d...", amount="0.01", asset="USDC"
CONF
200 Success