the402 endpoint detail

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ozmium.org tx send

https://ozmium.org/v1/tx/send

answers 402

Transfer a token (ERC-20) or native ETH to any recipient from the agent's own wallet- full parity with the app's Send. POST /v1/tx/send { to, amount (atomic: wei for ETH, token decimals otherwise), token? (omit / native sentinel = ETH) }. Returns { to, data, value } steps.

We sent a real POST request to this endpoint and it answered 402 with payment requirements we could parse.
Price
$0.01
Network
base
Pay to
0x53a05c0eed6cbf065f31aedbae7b0d8ce1a0f4db
Spec dialect
v2 (declares x402Version 2)
Transport
PAYMENT-REQUIRED header
HTTP method
POST
Response latency
63 ms
Payment options
1 usable of 1
Last checked
2026-08-15T14:24:47.653Z (21h ago)
Category
finance-crypto

Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fozmium.org%2Fv1%2Ftx%2Fsend"