ToolVet
72trust / 100

Near Transfer Preflight

by NEAR Transfer Preflight in Onchain & crypto

x402 APIPassing, checked 6 h ago

Before sending a NEP-141 token on NEAR: is the token real and not paused, does the receiver exist, and is it registered on the token — the storage_deposit step whose absence fails a transfer. If not, says the exact fix and its NEAR cost. With from and amount, also checks the sender holds enough. Catches sending to the token contract itself. Live from the NEAR RPC.

GET
https://402.com.tr/api/x402/near-transfer-preflight
Price
$0.01
per call in USDC
Uptime
100%
last 30 days
Response time
509 ms
646 ms slowest 5%
Last check
Passed
6 h ago, next any minute now

Run a free test callHow to call it

Reliability

All checks passedSome failedAll failedNot checked

Status and outage history · Atom feed · Watch with other listings

How to call it

GET https://402.com.tr/api/x402/near-transfer-preflight

Each call costs $0.01 in USDC on Base, paid with the request over x402.

Run a free test callOne unpaid request, the way an agent sends it. You see the payment challenge it gets back. Nothing is charged.

Example request

From the listing.

GET https://402.com.tr/api/x402/near-transfer-preflight?amount=25&from=bob.near&to=tether.multisafe.near&token=usdt.tether-token.near

Parameters

ParameterTypeRequiredDescription
amountstringNoAmount in token units (optional)
fromstringNoSender NEAR account (optional)
tostringYesReceiver NEAR account
tokenstringYesNEAR token contract account

Example response

The provider's example. We can't check it without paying.

{
  "amount": "25",
  "chain": "near",
  "checkedAt": "2026-10-08T08:47:10.793Z",
  "checksCount": 4,
  "fromBalance": "0.097688",
  "verdict": "STOP"
}

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.01.

curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://402.com.tr/api/x402/near-transfer-preflight?amount=25&from=bob.near&to=tether.multisafe.near&token=usdt.tether-token.near'

# x402 v2 sends the challenge base64-encoded in the PAYMENT-REQUIRED header (v1 sends it in the body).
# To read the header:
curl -sS -g -o /dev/null -D - 'https://402.com.tr/api/x402/near-transfer-preflight?amount=25&from=bob.near&to=tether.multisafe.near&token=usdt.tether-token.near' \
  | grep -i '^payment-required:' | cut -d' ' -f2 | tr -d '\r' | base64 --decode
JavaScript: pay and call
// npm i @x402/fetch @x402/evm viem
import { wrapFetchWithPayment, x402Client } from "@x402/fetch";
import { registerExactEvmScheme } from "@x402/evm/exact/client";
import { privateKeyToAccount } from "viem/accounts";

// Pays at most $0.01 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.01" });
registerExactEvmScheme(client, { signer: privateKeyToAccount(process.env.EVM_PRIVATE_KEY) });
const pay = wrapFetchWithPayment(fetch, client);

// Not sure it's safe to pay? ToolVet checks it first for $0.005. Pay for that from a separate
// client: this one is capped at $0.01 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2F402.com.tr%2Fapi%2Fx402%2Fnear-transfer-preflight
const res = await pay("https://402.com.tr/api/x402/near-transfer-preflight?amount=25&from=bob.near&to=tether.multisafe.near&token=usdt.tether-token.near");
console.log(res.status, await res.text());
Python: pay and call
# pip install "x402[requests,evm]"
import os
from eth_account import Account
from x402 import x402ClientSync
from x402.http.clients import x402_requests
from x402.mechanisms.evm import EthAccountSigner
from x402.mechanisms.evm.exact.register import register_exact_evm_client

# Pays at most $0.01 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.01"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.get("https://402.com.tr/api/x402/near-transfer-preflight?amount=25&from=bob.near&to=tether.multisafe.near&token=usdt.tether-token.near")
    print(res.status_code, res.text)

Security scan

No findings

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Recent checks

WhenResultHTTPTimePrice
6 h agoPassed402540 ms$0.01
16 h agoPassed402514 ms$0.01
26 h agoPassed402357 ms$0.01
36 h agoPassed402469 ms$0.01
40 h agoPassed402467 ms$0.01
Show 10 older checks
45 h agoPassed402503 ms$0.01
2 days agoPassed402643 ms$0.01
2 days agoPassed402455 ms$0.01
2 days agoPassed402488 ms$0.01
3 days agoPassed402477 ms$0.01
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