$0.02
per call · USD Coin on Base
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.
Endpoint
POST https://api.getplexa.com/v1/quote45
Calls / 30d
1
Unique payers / 30d
Sep 1
Last called
exact
Payment scheme
Call this service
import { wrapFetchWithPayment } from "@x402/fetch";
import { privateKeyToAccount } from "viem/accounts";
const account = privateKeyToAccount(process.env.PRIVATE_KEY);
const fetchWithPay = wrapFetchWithPayment(fetch, account);
const res = await fetchWithPay("https://api.getplexa.com/v1/quote", {
method: "POST",
headers: { "Content-Type": "application/json" },
body: JSON.stringify({
"chain": "base",
"sizeUSD": "5000",
"tokenIn": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"tokenOut": "0x4200000000000000000000000000000000000006"
}),
});
const data = await res.json();curl -X POST \
"https://api.getplexa.com/v1/quote" \
-H "Content-Type: application/json" \
-d '{"chain":"base","sizeUSD":"5000","tokenIn":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","tokenOut":"0x4200000000000000000000000000000000000006"}' \
-H "X-PAYMENT: <signed x402 payment>"Example response
{
"confidence": "high",
"depthAtSize": 2.6386839328112384,
"executablePrice": 0.0005277367865622476,
"priceImpactBps": 0,
"route": {
"dex": "univ3",
"legs": [
{
"dex": "univ3",
"feePips": 500,
"pool": "0xd0b53D9277642d899DF5C87A3966A349A798F224",
"venue": "uniswap-v3"
}
]
},
"ts": 1786022127490,
"validUntil": 1786022130490,
"worstCaseSlippageBps": 0
}Payment details
0xd993eafba87cffa2ca2cff5a56ef89034575a7efUSD Coin · 0x833589fcd6edb6e08f4c7c32d4f71b54bda02913Is this your API?
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