The Next.js boilerplate where the AI layer isn't an afterthought. Agents, RAG, streaming UI, token metering, and evals — wired to auth and billing, working the moment you clone it.
No spam. One launch email, a couple of build-in-public updates, unsubscribe anytime.
Typed tool-calling agent in ~150 readable lines. No LangChain.
One provider interface, swap with an env var. Streaming everywhere.
SSE token streaming with tool-call rendering and error states.
Every LLM call metered into a per-user ledger with plan quotas.
Ingest + retrieval on Supabase. No extra vector-DB bill.
Eval cases, CLI runner, CI-ready reports. Catch prompt regressions.