Neko Master is a self-hosted network traffic analytics platform for Clash/Mihomo and Surge proxy gateways — it observes connections but does not route traffic. A TypeScript/Fastify collector ingests live connection data (Clash via WebSocket /connections, Surge via HTTP polling, or an optional Go nekoagent daemon reporting over HTTP), computes deltas from cumulative byte counters with restart-baseline handling for pre-existing connections, enriches with GeoIP/ASN, aggregates by domain, IP, proxy chain, rule, device, and country, and persists to SQLite with optional dual-write to ClickHouse. A Next.js dashboard renders the data through REST + WebSocket push across Overview/Domains/Countries/Proxies/Rules/Devices/Health views, with time-range presets, PWA install, and zh/en i18n.