PathVector Studio

PathVector Studio develops a suite of independent network tools aimed at narrowing the gap between perceived and actual network states. The toolset is designed to address recurring issues where network documentation, expectations, or monitoring diverge from real-world conditions. Each tool in the suite targets a distinct layer of network operations, providing focused solutions for diagnosis, observation, topology tracking, routing hygiene, and security. The available tools include netblame, a free command-line diagnosis utility that identifies the most likely cause of network issues by performing staged checks across environment, DNS, TCP, TLS, HTTP, and QUIC, and outputs plain-language verdicts with supporting evidence. Netblame can be used as a single binary requiring only download, and it provides exit codes suitable for CI integration. Driftmap is another tool that generates topology snapshots from live device state (via LLDP and SSH) and highlights changes in links, IPs, and devices by comparing snapshots over time. Pathwx serves as a network weather station, continuously probing TCP paths to produce a JSONL time series and detect trends in latency and packet loss using z-score analysis. Ashealth, available in private beta, assesses routing hygiene for small autonomous system operators by cross-checking announced routes against RPKI ROAs, IRR objects, and PeeringDB, returning a numerical score with prioritized remediation steps. BGP Sentinel, also in production for internal use, provides real-time BGP hijack and route-leak detection using data from RIPE RIS Live, complete with an incident dashboard and alerting. The suite also includes educational resources: a beginner-friendly containerlab course for hands-on protocol learning, and an intermediate "Protocol in Code" course focused on reading and understanding BGP and OSPF logic directly from GitHub-hosted source code. All public tools and courses are independent; no tool requires another, though their outputs can complement each other. PathVector Studio tools are distributed as standalone utilities, some of which are publicly available while others are in beta or prototype stages. Netblame is free and open source under the MIT license. The tools are intended for network operators, engineers, and learners seeking practical, independently usable solutions for network diagnosis, monitoring, and learning.