Shipped
Both Unseen UI packages are on npm as 0.1.0-alpha.1. The next alpha adds a link button, filter chips and a neutral tag, all found while building this site.
Learned
Hybrid retrieval with a cross-encoder re-ranker improved recall on the golden set by a small margin but doubled p95 latency. Abandoned for now. The experiment is logged.
Reading
The OWASP LLM Top 10 update. The prompt-injection section is the one to re-read before any tool-calling deployment.
More on these topics
Build log · · 1 min read · shipped
Build log: shipping Unseen UI to npm
How the component library behind this site went from a private workspace to two published packages, including the three things the first consumer broke.
Checklist · · 12 checks
RAG production-readiness checklist
Twelve checks to pass before a retrieval system answers a real user. Tick them locally; progress stays in your browser.
Failure story · · 1 min read
The retrieval cache that served stale policies
A well-meaning cache in front of retrieval kept answering from last quarter's HR policy for eleven days.
Discussion