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Installation

npm install @xenarch/core
Published on npm. Used internally by the MCP server and CLI.

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Configuration

import { loadConfig, createSigner } from "@xenarch/core";

const { config } = await loadConfig();
const signer = createSigner(config);

console.log(config.network);  // "base" or "base-sepolia"
Config loading priority:
  1. Environment variables (XENARCH_PRIVATE_KEY, XENARCH_RPC_URL, etc.)
  2. ~/.xenarch/config.json
  3. ~/.xenarch/wallet.json
  4. Auto-generate wallet on first use

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Gate checking

import { fetchGate, fetchGateByDomain } from "@xenarch/core";

// Check by URL (HTTP request, looks for 402)
const result = await fetchGate("https://example.com/premium");
if (result.gate) {
  console.log(result.gate.price_usd);  // "0.003"
}

// Check by domain (platform API)
const gate = await fetchGateByDomain(
  "https://xenarch.dev",
  "example.com"
);

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Payment execution

import { executePayment, verifyPayment } from "@xenarch/core";

// Execute USDC payment on Base
const result = await executePayment(gate, signer, usdcAddress);
console.log(result.txHash);       // "0x..."
console.log(result.blockNumber);  // 28451023

// Verify and get access token
const { access_token, expires_at } = await verifyPayment(
  gate.verify_url,
  result.txHash
);

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Payment history

import { getPaymentHistory } from "@xenarch/core";

const history = await getPaymentHistory(
  "https://xenarch.dev",
  walletAddress,
  { domain: "example.com", limit: 10 }
);

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Types

interface XenarchConfig {
  privateKey: string;
  rpcUrl: string;
  apiBase: string;
  network: "base" | "base-sepolia";
  autoApproveMaxUsd?: number;
  allowedDomains?: string[];
  blockedDomains?: string[];
}

interface GateResponse {
  xenarch: boolean;
  gate_id: string;
  price_usd: string;
  splitter: string;
  collector: string;
  network: string;
  asset: string;
  protocol: string;
  verify_url: string;
  expires: string;
}

interface PaymentResult {
  txHash: string;
  blockNumber: number;
}

interface PaymentHistoryItem {
  url: string;
  domain: string;
  amount_usd: string;
  tx_hash: string;
  paid_at: string;
}

​
Contract constants

// Base Mainnet
const USDC_BASE = "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913";
const SPLITTER_MAINNET = "0xC6D3a6B6fcCD6319432CDB72819cf317E88662ae";

// Base Sepolia
const SPLITTER_SEPOLIA = "0x7ecfe8f83eab6ba170063d1f1fe7c33695a9ce1d";
const MOCK_USDC_SEPOLIA = "0xc5aDdd66Da733101A5468857Aa3C6689Af9d1DDc";