Token Precall

{
  "ageSec": 12,
  "chain": "robinhood",
  "generatedAt": 1791570200000,
  "precall": {
    "ageAtCallMin": 41.2,
    "buyEth": 1.84,
    "buys": 23,
    "capturedAt": 1791568460000,
    "chg1h0": 240,
    "flags": [
      "run",
      "cluster"
    ],
    "postedAt": 1791568400000,
    "resolved": 30,
    "run60": 3.4,
    "runFromMin": 58,
    "sameBlockMaxTx": 6,
    "sameBlockWallets": 6,
    "symbol": "HOOD",
    "token": "0x7c3e9a41d0b25f8e6a1c4d93b07e2f5a8c61d4b2",
    "tracked": true,
    "walletList": [
      "0x5e2a9c1d7f30b84e6a2d1c9f8b3e07a4d6c5f2b1"
    ],
    "wallets": 17,
    "walletsResolved": true
  },
  "rules": {
    "cluster": ">= 5 distinct wallets bought in ONE block in the 10 min before the post (front-run cluster)",
    "run": "ran >= 3x over the hour before the post (run60; DexScreener h1 change as fallback when the pool was not tracked)",
    "thresholds": {
      "maxRun60": 3,
      "minAgeAtCallMin": 30,
      "sameBlockWallets": 5,
      "windowMin": 10
    },
    "young": "token < 30 min old when the call was posted"
  },
  "schemaVersion": 1,
  "token": "0x7c3e9a41d0b25f8e6a1c4d93b07e2f5a8c61d4b2"
}

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://api.paxie.fun/v1/rh/token/:addr/precall'

# 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://api.paxie.fun/v1/rh/token/:addr/precall' \
  | grep -i '^payment-required:' | cut -d' ' -f2 | tr -d '\r' | base64 --decode

// 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 $0.02 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.02" });
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 $0.02 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fapi.paxie.fun%2Fv1%2Frh%2Ftoken%2F%3Aaddr%2Fprecall
const res = await pay("https://api.paxie.fun/v1/rh/token/:addr/precall");
console.log(res.status, await res.text());

# 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 $0.02 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.02"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.get("https://api.paxie.fun/v1/rh/token/:addr/precall")
    print(res.status_code, res.text)