Airdrop Candidates

{
  "candidates": [
    {
      "category": "CDP",
      "defillama": "https://defillama.com/protocol/usdd",
      "difficulty": "media",
      "networks": [
        "Tron",
        "Ethereum"
      ],
      "project": "USDD",
      "task": "mint a stablecoin against collateral",
      "tvl_usd": 1238010064,
      "twitter": "https://x.com/usddio",
      "web": "https://usdd.io/"
    },
    {
      "category": "RWA",
      "defillama": "https://defillama.com/protocol/invesco-ustb",
      "difficulty": "media",
      "networks": [
        "Ethereum",
        "Plume Mainnet"
      ],
      "project": "Invesco USTB",
      "task": "deposit into real-world assets",
      "tvl_usd": 560970067,
      "twitter": "https://x.com/superstatefunds",
      "web": "https://superstate.com/"
    }
  ],
  "note": "Candidates by signal (high TVL, no token). They are NOT confirmed airdrops: confirm on the project's website and Twitter. Source: DefiLlama (open data).",
  "total": 35
}

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i -X POST 'https://api.vextorium.com/v1/airdrop-candidates' \
  -H 'content-type: application/json' \
  --data-raw '{"limit":5,"min_tvl":50000000}'

# 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://api.vextorium.com/v1/airdrop-candidates' \
  -H 'content-type: application/json' \
  --data-raw '{"limit":5,"min_tvl":50000000}' \
  | 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 $0.005 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.005" });
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 $0.005 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fapi.vextorium.com%2Fv1%2Fairdrop-candidates&method=POST
const res = await pay("https://api.vextorium.com/v1/airdrop-candidates", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "limit": 5,
    "min_tvl": 50000000
  }),
});
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 $0.005 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.005"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.post(
        "https://api.vextorium.com/v1/airdrop-candidates",
        json={
            "limit": 5,
            "min_tvl": 50000000,
        },
    )
    print(res.status_code, res.text)