Each write-up follows the same structure a reviewer can scan in a minute — Problem → Constraints → Architecture → Trade-offs → Metrics → What broke → What’s next — because junior engineers list tools and senior engineers justify them. Every one links to code you can read and, where it’s live, a system you can use.
The assistant answers only from real documents, shows where each claim came from, and refuses honestly when the documents don’t cover a question — for a portfolio whose whole thesis is “everything here is true and defensible.”
A 108-case golden dataset scored by a deterministic harness and an LLM-as-judge — which caught a real overclaim bug that was fixed, re-measured, and redeployed. Judge-vs-human calibration is the one honest open step.
Every response carries an X-Request-ID; /chat returns a phase-timed trace; logs are structured JSON; and a public /metrics endpoint reports latency and cost — all self-hosted, no external APM, with honest per-process windows.
A real tool-use loop — not a scripted pipeline — where Claude decides which read-only tools to call over Samuel’s data, iterates on the results, and returns every step it took, so the autonomy is visible instead of a black box.
The same four tools exposed over the Model Context Protocol so any MCP client (Claude Desktop, an IDE assistant) can discover and call them — reusing one source of truth, and verified against a real client rather than assumed to work.
Server-Sent Events type the answer out live, then finalize renumbered citations and real per-answer cost once the full text exists — surviving the observability middleware and the proxy, and degrading honestly if the stream breaks.
The full architecture, end to end, is written up in the How-it-works guide. Docker & Terraform round out the eight shipped modules.
A custom support assistant on the Claude API, grounded in a product’s real knowledge: it answers only from known content, refuses honestly instead of hallucinating, and hands off cleanly to a human. React + Vercel serverless, with the API key held server-side.
A responsive landing page built from scratch with no framework — CSS design tokens, fluid type with clamp(), and an auto-fit grid — to show the platform fundamentals without a framework crutch. Push-to-deploy on Vercel.