Track personal mastery over the 543-concept Nexus knowledge graph. Mark concepts mastered, see per-domain progress, get prerequisite-aware next-study recommendations. Storage stays in your browser.
The Nexus knowledge graph has 543 concepts organized into ~45 thematic groups (foundations, telemetry, detection engineering, IR, threat intel, AI/ML, IAM, cloud, red team, governance, etc.) with 684 prerequisite edges connecting them.
Mark a concept mastered by clicking it (or its checkbox) anywhere in the tool.
Your mastery state is saved in browser localStorage under the key nexus_mastery_v1.
It is private to this browser and survives across sessions.
The Next to Study tab applies a BFS over the prerequisite graph: it shows concepts whose direct prerequisites are all mastered. That gives a learning frontier prioritized by what's actually unlocked, not just what's on the syllabus.
Concepts where every direct prerequisite is already mastered. Sorted by downstream impact (how many other concepts depend on this one).
Mastery state is browser-local. Export a JSON backup to move between devices, or to share with a study partner.