the402 endpoint detail

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agent.api.0x.org x402 swap-allowance-holder-price

https://agent.api.0x.org/v1/x402/swap-allowance-holder-price/

answers 402

Get the indicative price for a swap using Allowance Holder to set allowances

We sent a real GET request to this endpoint and it answered 402 with payment requirements we could parse.
Price
$0.01
Network
base
Pay to
0xb15a55e85FdF5edc41B6c1eaf7813e2c6e6def59
Spec dialect
v2 (declares x402Version 2)
Transport
PAYMENT-REQUIRED header
HTTP method
GET
Response latency
826 ms
Payment options
3 usable of 3
Last checked
2026-09-06T01:18:39.135Z (2h ago)
Category
finance-crypto

Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fagent.api.0x.org%2Fv1%2Fx402%2Fswap-allowance-holder-price%2F"