Chain Pretrade

{
  "chain": "solana",
  "checked_at": "2026-10-05T08:43:25.149Z",
  "decimals": 6,
  "explorer_url": "https://solscan.io/token/JUPyiwrYJFskUPiHa7hkeR8VUtAeFoSYbKedZNsDvCN",
  "freeze_authority": null,
  "mint_authority": null,
  "name": "Jupiter",
  "news_note": "Top web results for the token's name and symbol; titles and links as published.",
  "note": "Facts read from the chain and the web, not a rating or advice. No warnings does not mean safe.",
  "pool_depth_usd": 407369,
  "position": null,
  "price_source": {
    "dex": "Orca Whirlpools",
    "fee_tier": 500,
    "pool": "C1MgLojNLWBKADvu9BHdtgzz1oZX4dZ5zGdGcgvvW8Wz",
    "quote_token": "SOL",
    "tick_spacing": 8
  },
  "price_usd": 0.336803,
  "recent_news": [
    {
      "date": null,
      "snippet": null,
      "title": "Jupiter Token Spikes as DEX Aggregator Plans to Spend Half its Fees On Buybacks",
      "url": "https://thedefiant.io/news/defi/jupiter-token-spikes-as-dex-aggregator-plans-to-spend-half-its-fees-on-buybacks"
    },
    {
      "date": null,
      "snippet": null,
      "title": "Jupiter spikes 40% as founder says 50% of fees will go to token buybacks",
      "url": "https://www.theblock.co/amp/post/337071/jupiter-spikes-40-as-founder-says-50-of-fees-will-go-to-token-buybacks"
    }
  ],
  "symbol": "JUP",
  "token": "JUPyiwrYJFskUPiHa7hkeR8VUtAeFoSYbKedZNsDvCN",
  "total_supply": "6861486339.419214",
  "trade_size": {
    "amount_usd": 500,
    "flag": "ok",
    "pool_depth_usd": 407369,
    "rough_price_impact_pct": 0.12,
    "share_of_pool_pct": 0.12
  },
  "warning_count": 0,
  "warnings": []
}

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i -X POST 'https://chain.tollkit.dev/chain/pretrade' \
  -H 'content-type: application/json' \
  --data-raw '{"amount_usd":500,"chain":"solana","token":"JUPyiwrYJFskUPiHa7hkeR8VUtAeFoSYbKedZNsDvCN"}'

# 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 - -X POST 'https://chain.tollkit.dev/chain/pretrade' \
  -H 'content-type: application/json' \
  --data-raw '{"amount_usd":500,"chain":"solana","token":"JUPyiwrYJFskUPiHa7hkeR8VUtAeFoSYbKedZNsDvCN"}' \
  | 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 $0.01 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%2Fchain.tollkit.dev%2Fchain%2Fpretrade&method=POST
const res = await pay("https://chain.tollkit.dev/chain/pretrade", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "amount_usd": 500,
    "chain": "solana",
    "token": "JUPyiwrYJFskUPiHa7hkeR8VUtAeFoSYbKedZNsDvCN"
  }),
});
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 $0.01 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.post(
        "https://chain.tollkit.dev/chain/pretrade",
        json={
            "amount_usd": 500,
            "chain": "solana",
            "token": "JUPyiwrYJFskUPiHa7hkeR8VUtAeFoSYbKedZNsDvCN",
        },
    )
    print(res.status_code, res.text)