Lab Quote

{
  "broader": [],
  "by_year": [
    {
      "papers": 423,
      "year": 2025
    },
    {
      "papers": 120,
      "year": 2026
    }
  ],
  "by_year_estimated": true,
  "communities_sampled_papers": 1549,
  "data_version": "20260930T073534Z",
  "depths": {
    "packet": {
      "available": false,
      "price_usd": "0.91"
    },
    "papers_100": {
      "available": true,
      "price_usd": "0.10",
      "rows": 100
    },
    "papers_20": {
      "available": true,
      "price_usd": "0.02",
      "rows": 20
    }
  },
  "expires_at": 1790949600,
  "matches": 2087,
  "matches_estimated": true,
  "notes": {
    "buy": "Buy a depth marked available: true with lab_run (quote_id, depth) …"
  },
  "query": {
    "canonical": "el:Co el:Li year:2015..2026",
    "ignored": [],
    "readable": "Cobalt AND Lithium AND 2015-2026",
    "wildcards": {}
  },
  "quote_id": "eyJkdiI6IjIwMjYwOTMwVDA3MzUzNFoi…",
  "top_communities": [
    {
      "name": "Solid-State and Polymer Electrolytes for Lithium and Sodium Metal Batteries",
      "share_pct": 31.2
    }
  ]
}

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://www.elements-live.com/v1/lab/quote?q=%2BLi+%2BCo+year%3A2015..2026'

# 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://www.elements-live.com/v1/lab/quote?q=%2BLi+%2BCo+year%3A2015..2026' \
  | 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%2Fwww.elements-live.com%2Fv1%2Flab%2Fquote
const res = await pay("https://www.elements-live.com/v1/lab/quote?q=%2BLi+%2BCo+year%3A2015..2026");
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.get("https://www.elements-live.com/v1/lab/quote?q=%2BLi+%2BCo+year%3A2015..2026")
    print(res.status_code, res.text)