ToolVet
75trust / 100

Watchlist Diff

by Watchlist Diff in Onchain & crypto

x402 APIPassing, checked 2 h ago

Retention in one call: pass up to 10 tokens to snapshot them and get a watchId; call again with that watchId to get only the DELTAS since last time — liquidity ±%, price ±%, became-honeypot, sell-tax spiked, liquidity pulled. The second call is worth more than the first. Built for agents holding positions that re-check daily.

GET
https://402.com.tr/api/x402/watchlist-diff
Price
$0.06
per call in USDC
Uptime
100%
last 30 days
Response time
390 ms
654 ms slowest 5%
Last check
Passed
2 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/watchlist-diff

Each call costs $0.06 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/watchlist-diff?tokens=0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913%2C0x4ed4E862860beD51a9570b96d89aF5E1B0Efefed

Parameters

ParameterTypeRequiredDescription
tokensstringNoUp to 10 token addresses (comma-separated)
watchIdstringNoOr: watchId to re-check an existing list

Example response

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

{
  "created": true,
  "expiresInDays": 30,
  "tokenCount": 2,
  "watchId": "wl_9f3c1a2b"
}

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.06.

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/watchlist-diff?tokens=0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913%2C0x4ed4E862860beD51a9570b96d89aF5E1B0Efefed'

# 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/watchlist-diff?tokens=0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913%2C0x4ed4E862860beD51a9570b96d89aF5E1B0Efefed' \
  | 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 $0.06 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.06" });
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 $0.06 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2F402.com.tr%2Fapi%2Fx402%2Fwatchlist-diff
const res = await pay("https://402.com.tr/api/x402/watchlist-diff?tokens=0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913%2C0x4ed4E862860beD51a9570b96d89aF5E1B0Efefed");
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 $0.06 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.06"})
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/watchlist-diff?tokens=0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913%2C0x4ed4E862860beD51a9570b96d89aF5E1B0Efefed")
    print(res.status_code, res.text)

Security scan

No findings

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Recent checks

WhenResultHTTPTimePrice
2 h agoPassed402532 ms$0.06
7 h agoPassed402493 ms$0.06
11 h agoPassed402401 ms$0.06
16 h agoPassed402363 ms$0.06
21 h agoPassed402361 ms$0.06
Show 10 older checks
25 h agoPassed402373 ms$0.06
30 h agoPassed402648 ms$0.06
34 h agoPassed402397 ms$0.06
38 h agoPassed402399 ms$0.06
42 h agoPassed402400 ms$0.06
47 h agoPassed402366 ms$0.06
2 days agoPassed402420 ms$0.06
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3 days agoPassed402654 ms$0.06