Xenarch is a non-custodial x402 MCP server. It lets AI agents — Claude, Cursor, LangChain, CrewAI, or any MCP client — resolve HTTP 402 ("Payment Required") responses automatically by signing USDC micropayments on Base L2 (up to $1 per call). Publishers get paid directly through an immutable on-chain splitter contract: 0% fee today, hard-capped at 0.99% forever. Unlike Cloudflare Pay-Per-Crawl, Xenarch works on any host and is fully non-custodial. HTTP 402 has been reserved in the HTTP spec since 1997 — x402 is the open protocol that finally uses it.
Server Config
{
"mcpServers": {
"xenarch": {
"command": "npx",
"args": [
"-y",
"@xenarch/agent-mcp"
]
}
}
}