the402 endpoint detail

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api.getplexa.com v1 quote

https://api.getplexa.com/v1/quote

payable

Plexa /v1/quote — executable swap quote: the realizable fill price at your trade size, not a mid/spot price feed. Returns price impact (bps), worst-case slippage, depth and the per-leg route across Base/Polygon/Arbitrum liquidity, from canonical on-chain quoters. Call it before a swap to see what the fill actually costs. Informational data, not financial advice.

We sent a real POST request to this endpoint and it answered 402 with payment requirements we could parse.
Price
$0.02
Network
base
Pay to
0xd993eAfBA87cFfa2ca2CFF5A56EF89034575A7ef
Spec dialect
v2 (declares x402Version 2)
Transport
PAYMENT-REQUIRED header
HTTP method
POST
Response latency
414 ms
Payment options
4 usable of 4
Last checked
2026-08-10T09:12:08.359Z (1d ago)
Category
finance-crypto

Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fapi.getplexa.com%2Fv1%2Fquote"