timestamp: 2026-06-20
tags: [glossary, hono, api, types]
Hono RPC
Type-safe API client pattern: hc<AppType> from @hono/client
Hono RPC
Definition
Hono RPC is the type-safe client pattern where the backend exports
type AppType = typeof app and frontends instantiate
hc<AppType>(url) from @hono/client — getting full type inference
on every route, no codegen and no schema files.
Expanded
The family’s single Hono Worker at apps/api/ exports AppType
through the @chirag127/api-client workspace package, which
re-exports hc<AppType>. All 11+ sites and every Chrome extension
import the same client; route paths, params, request bodies, and
response shapes are all type-checked at consumer build time.
This is why the API is one Worker rather than per-site Pages Functions: type inference flows through one source of truth, and splitting it would require schema files (or codegen) to bridge boundaries.