keryx
Autonomous research agent that pays every source it cites in USDC on Arc via x402 micropayments.
Install
Remote streamable-http
https://keryx.cc/mcpnpmstdio
npx -y keryx-mcp Client config (Claude Desktop, Cursor, Windsurf and most MCP clients)
{
"mcpServers": {
"io-github-tang-vu-keryx": {
"url": "https://keryx.cc/mcp"
}
}
} Source: official MCP Registry record · registry name io.github.tang-vu/keryx · published 2026-07-27 · updated 2026-07-27. Not an endorsement; review the code before connecting it to anything sensitive.