← Tools
THE IDEA
Declare an entity's shape once and get compile-time TypeScript types, type-safe predicates, and updates that force the full shape — so a partial update can never silently drop your attributes.
The problem today
- Attributes are a loose array of { key, value } — no schema, no type inference, easy to typo a key or pass the wrong type.
- `updateEntity` is FULL-REPLACE, not a patch: if you send only the attribute you changed, every other attribute is silently dropped. It's the #1 CRITICAL item in Arkiv's DX audit.
- There's no app namespacing, so everyone hand-tags entities with a `project` attribute to avoid collisions in the shared DB.
What it would do
- `defineEntity()` declares attributes + types + TTL in one place.
- Typed reads/writes + a type-safe query builder (predicates checked at compile time).
- Update requires the full shape → the full-replace footgun becomes a TYPE ERROR, not a data-loss bug.
- Bakes in namespacing (an appId) and can generate TS types + React hooks.
WHY IT’S A BETTER EXPERIENCE
- Arkiv starts to feel like Prisma/Drizzle — the DX devs already trust — instead of loose key/value blobs.
- Three of the worst footguns (weak types, silent attribute drop, manual namespacing) disappear behind one layer.
- Even AI-written code benefits: the compiler catches what the agent slips on.
HOW IT COMPARES
Drizzle / Prismaschema-first types + query builder. We bring the typed-client half (Arkiv has no joins, so not a full ORM).
Convex schemas/validatorstyped end-to-end backend — proof devs want this for a modern DB.
Just a skill + MCPcan't give compile-time types in your repo. That's why this is a tool, not a skill.
FEASIBILITY — AND WHY THIS ISN’T HAND-WAVING
Medium to build
A wrapper over the existing SDK — no protocol changes. Arkiv's own docs already recommend zod validation, so this productizes a pattern they endorse.
Grounded in
- Arkiv DX audit: "weak TS types", full-replace footgun (CRITICAL), no namespacing (CRITICAL) — this targets all three.
- advanced-patterns.md already documents validating entities with a schema library.
- Attribute shape ({key, value: string|number}) and full-replace verified live on Braga.
PAIRS WITH