$0.006
per call · USD Coin on Base
Find out why an Animica transaction would be rejected BEFORE you broadcast it. Decodes your canonical CBOR {body, sigs} envelope, returns the normalised fields and the CANONICAL HASH you are about to sign, then asks the node whether it would admit the transaction and why not. Both calls are read-only: nothing is inserted into the mempool and nothing is broadcast. Built for people writing Animica signers, where the alternative feedback loop is broadcast-and-see. No model.
Endpoint
POST https://animica.dev/x402/tx/preflight1
Calls / 30d
1
Unique payers / 30d
Aug 23
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://animica.dev/x402/tx/preflight", {
method: "POST",
headers: { "Content-Type": "application/json" },
body: JSON.stringify({
"raw_tx": "0xa264626f6479a761760163676173a2656c696d69741952086570726963651a001bf5386466726f6d784030303030303030303030303030303030303030303030303030303030303030303030303030303030303030303030303030303030303030303030303030303030656e6f6e63650067636861696e496401677061796c6f6164a26174006176a362746f78403131313131313131313131313131313131313131313131313131313131313131313131313131313131313131313131313131313131313131313131313131313164646174616066616d6f756e74016a6163636573734c69737480647369677380"
}),
});
const data = await res.json();curl -X POST \
"https://animica.dev/x402/tx/preflight" \
-H "Content-Type: application/json" \
-d '{"raw_tx":"0xa264626f6479a761760163676173a2656c696d69741952086570726963651a001bf5386466726f6d784030303030303030303030303030303030303030303030303030303030303030303030303030303030303030303030303030303030303030303030303030303030656e6f6e63650067636861696e496401677061796c6f6164a26174006176a362746f78403131313131313131313131313131313131313131313131313131313131313131313131313131313131313131313131313131313131313131313131313131313164646174616066616d6f756e74016a6163636573734c69737480647369677380"}' \
-H "X-PAYMENT: <signed x402 payment>"Payment details
0x5d17c40fd6b119dc6006c4ab3c20a917fcab2acdUSD Coin · 0x833589fcd6edb6e08f4c7c32d4f71b54bda02913Is this your API?
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