Technical overview

Litepaper

Open x402 funding rail — honest scope and architecture.

deposit.now is programmable funding infrastructure shaped as HTTP 402. An agent declares a target address and net amount, pays amount + 1% via x402, and after settlement the platform forwards net USDC on Base. Optional public receipts document payer, target, fee, and explorer links when storage is configured.

Problem

Agents that already hold USDC often need a simple, machine-readable way to deposit into a known address over HTTP — without integrating a full wallet platform. Raw transfers lack a standard 402 flow and productized receipts. CDP Fund solves funding inside Coinbase’s stack, not every open agent integration.

Solution

  • One deposit callPOST /api/deposit with target, amount, optional memo.
  • x402 exact scheme — gross = amount + 1%; facilitator verifies on-chain.
  • Forward after settle — platform retains fee, forwards net (async; can fail).
  • Optional receipts — public page when Blob storage is configured.

Architecture

  1. Agent → POST /api/deposit → HTTP 402
  2. Agent pays gross via x402 → retry with payment proof
  3. Facilitator settles USDC to platform wallet
  4. Intent recovered from body and/or stored intent → forward net to target
  5. Response payment_received + receipt URL; poll receipt for forwardStatus

Comparison

Coinbase already funds wallets (Fund/Send). deposit.now is a complementary open rail — not a replacement.

FeatureDirect transferCoinbase CDP Funddeposit.now
Fund a walletYou craft the transferYes — Fund / Send skills & APIsYes — x402 pay, then forward to target
Payer integrationWallet + chain codeCDP credentials / AgentKit stackAny x402 client (no deposit.now API key)
Target walletAny address you control sending toBest inside CDP wallet stackAny EVM address you pass as target
Public receipt pageNo (tx hash only)Your own logs / explorerOptional public /receipt/{id} when storage is configured
Protocol shapeRaw on-chainCDP + x402 in their productHTTP 402 + open API + llms.txt
Fee modelGas onlyCDP / product pricing1% platform fee on net amount

Economics

  • Net amount: the amount field.
  • Platform fee: flat 1% of net, paid as part of gross x402 payment.

Limits (honest)

  • Does not create wallets or sub-accounts.
  • HTTP 200 does not mean target already holds funds.
  • Public receipts require server storage configuration.
  • Forward can fail; operators should monitor CDP hot wallet health.

Risk summary

See disclosures. Experimental infrastructure, not a money transmitter or bank. On-chain payments are irreversible.