A twelve-page architecture note on replacing append-only agent transcripts with typed, addressable state and using Jev for context, routing, tool, cache, and permission decisions.
Original by Independent synthesis of Diogo Almeida's design notesAgent workflowsThe TypeSafe Founder's Blueprint for Building with JevSource reviewed
Before you dive in
What you’ll find in the original
Price model routing by context rebuilds, not only token rates; handing work away and back can cost more than staying on the frontier model.
Score context chunks for each query and disclose tools in tiers instead of permanently loading every schema.
Use typed Jev decisions for allow, ask, or deny policies while deterministic code and language models perform the actual work.
Worth knowing
The PDF says it was independently compiled from Diogo Almeida's design notes and is not affiliated with or endorsed by TypeSafe.