Defi L2s

{
  "by_stage": {
    "Not applicable": 21,
    "Stage 0": 68,
    "Stage 1": 6,
    "Stage 2": 4
  },
  "note": "TVS is total value secured; stage is L2BEAT decentralisation maturity (0 to 2)",
  "projects": 99,
  "source": "L2BEAT",
  "top": [
    {
      "category": "Optimistic Rollup",
      "change_7d_pct": -4.6,
      "host_chain": "Ethereum",
      "name": "Base Chain",
      "native_pct": 48.2,
      "rank": 1,
      "share_pct": 31.96,
      "slug": "base",
      "stack": [
        "OP Stack"
      ],
      "stage": "Stage 1",
      "tvs_usd": 15699536896,
      "type": "layer2",
      "under_review": false
    },
    {
      "category": "Optimistic Rollup",
      "change_7d_pct": -6.5,
      "host_chain": "Ethereum",
      "name": "Arbitrum One",
      "native_pct": 28.2,
      "rank": 2,
      "share_pct": 22.01,
      "slug": "arbitrum",
      "stack": [
        "Arbitrum"
      ],
      "stage": "Stage 1",
      "tvs_usd": 10812140544,
      "type": "layer2",
      "under_review": true
    },
    {
      "category": "Other",
      "change_7d_pct": -2.9,
      "host_chain": "Arbitrum One",
      "name": "Hyperliquid",
      "native_pct": 0,
      "rank": 3,
      "share_pct": 14.17,
      "slug": "hyperliquid",
      "stack": [],
      "stage": "Not applicable",
      "tvs_usd": 6962854912,
      "type": "layer3",
      "under_review": false
    },
    {
      "category": "Other",
      "change_7d_pct": -3.1,
      "host_chain": "Ethereum",
      "name": "Polygon PoS",
      "native_pct": 4.6,
      "rank": 4,
      "share_pct": 8,
      "slug": "polygon-pos",
      "stack": [],
      "stage": "Not applicable",
      "tvs_usd": 3929937408,
      "type": "layer2",
      "under_review": false
    }
  ],
  "total_value_secured_usd": 49129602476
}

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://saylorinnovations.com/api/defi/l2s?limit=10'

# 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://saylorinnovations.com/api/defi/l2s?limit=10' \
  | 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%2Fsaylorinnovations.com%2Fapi%2Fdefi%2Fl2s
const res = await pay("https://saylorinnovations.com/api/defi/l2s?limit=10");
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://saylorinnovations.com/api/defi/l2s?limit=10")
    print(res.status_code, res.text)