opencode/packages/sdk-next/README.md

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# @opencode-ai/sdk-next
Effect-native scoped OpenCode host for in-process applications. This transitional package will replace the existing generated `@opencode-ai/sdk` after its consumers migrate.
The SDK executes Server's assembled HTTP router in memory. It opens no listener and performs no network I/O, while preserving the same routing, middleware, handlers, codecs, and errors as the network client.
```ts
import { OpenCode } from "@opencode-ai/sdk-next"
const opencode = yield * OpenCode.create()
const session = yield * opencode.sessions.get({ sessionID })
```
It also exposes local-only `tools.register(...)`. Closing the owning Effect Scope releases router resources, location services, fibers, and scoped tool registrations.
The same constructor is available as a service Layer:
```ts
const program = Effect.gen(function* () {
const opencode = yield* OpenCode.Service
return yield* opencode.sessions.get({ sessionID })
})
yield * program.pipe(Effect.provide(OpenCode.layer))
```
`OpenCode.layer` adapts `OpenCode.create()` for dependency injection; it does not define another host implementation.