Keryx

Keryx is an open-source research agent. Ask a question, set a budget, and follow BUY/SKIP/CACHE decisions. Inspect source excerpts, citations, article versions and payment receipts. Eligible, evidence-verified citations can reward creators in USDC on Arc mainnet. Free public references stay free. Use the web, MCP or API. Early access: gaps and incomplete answers are explicit. The video shows an earlier Arc-testnet build; screenshots show the current app.