the synthesis course · context-eng-kit × knowledge-graph

Ultimate Context Engineering
master the discipline on an app that shows its tokens

Fifteen modules, one instrument: MedFlow Copilot — a prior-auth app whose Token Lens shows the tokens, cost, and correctness of every AI call. You learn write / select / compress / isolate by flipping strategies and watching the receipts change — and every saving must survive its answer key, because savings only count when the answer is right.

📱 App guide — screens, receipts, and strategy toggles, with real screenshots

▶ Walkthroughs — four measured scenarios stepped through: the baseline receipt, the three selectors, the compression that fails its key, the fabricated birthdate

0Modules
5Tracks
30Labs
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step 0 · launch the bench

Every module in this course is a switch in MedFlow Copilot — flip a strategy, watch the receipt change. Start it once, keep it running:

git clone https://github.com/varasrinivas/ultimate-context-eng.git && cd ultimate-context-eng
cd app/api && ./mvnw spring-boot:run     # terminal 1
cd app/ui  && npm install && npm run dev # terminal 2 → localhost:5173

No API key needed (replay mode). The app, labs and bench harness are all in the course repo: github.com/varasrinivas/ultimate-context-eng. App guide with screenshots → · U00 explains the study rhythm: read → flip → lab → build, module by module.

The Token Lens receipt