A real Chromium browser exposed as an MCP server, priced per action in USDC on Base via x402: navigate $0.005, extract $0.005, accessibility snapshot $0.005, act $0.01, screenshot $0.02, close free. No account, no API key, no subscription. Runs free self-hosted over stdio, or pay per action on the hosted endpoint. Every settled action lands in a public receipts log. Live in the Official MCP Registry as com.scriptmasterlabs/agent-browser; first payment settled on Base (block 53135025). By Script Master Labs LLC, a Service-Disabled Veteran-Owned Small Business.