diff --git a/packages/effect-fc/src/ErrorObserver.ts b/packages/effect-fc/src/ErrorObserver.ts
index d18748c..921d6f9 100644
--- a/packages/effect-fc/src/ErrorObserver.ts
+++ b/packages/effect-fc/src/ErrorObserver.ts
@@ -1,15 +1,13 @@
-import { type Cause, Context, Effect, Layer, type Queue, type Scope } from "effect"
+import { type Cause, Context, type Effect, Layer, type Queue, type Scope } from "effect"
 
 
-export interface ErrorObserver<EIn, EOut> {
-    readonly "~In": EIn
-    readonly "~Out": EOut
-    readonly "~Caught": Exclude<EIn, EOut>
-
-    handle<A, E, R>(effect: Effect.Effect<A, E, R>): Effect.Effect<A, Exclude<E, Exclude<EIn, EOut>>, R>
-    readonly subscribe: Effect.Effect<Queue.Dequeue<Cause.Cause<EIn>>, never, Scope.Scope>
+export interface ErrorObserver<E = never> {
+    handle<Eff extends Effect.Effect<any, any, any>>(effect: Eff): Eff
+    readonly subscribe: Effect.Effect<Queue.Dequeue<Cause.Cause<E>>, never, Scope.Scope>
 }
 
+export const ErrorObserver = <E = never>(): Context.Tag<ErrorObserver<E>, ErrorObserver<E>> => Context.GenericTag("@effect-fc/ErrorObserver/ErrorObserver")
+
 
 export namespace make {
     export type Handler<EIn, EOut> = (
@@ -24,34 +22,3 @@ export namespace make {
 export const make = <EIn = never>() => <EOut>(
     f: make.Handler<NoInfer<EIn>, EOut>
 ): Effect.Effect<ErrorObserver<EIn, EOut>> =>
-
-
-export const ErrorObserver: Context.Tag<
-    ErrorObserver<unknown, unknown>,
-    ErrorObserver<unknown, unknown>
-> = Context.GenericTag("@effect-fc/ErrorObserver/ErrorObserver")
-
-export namespace Service {
-    export interface Result<Self, Id extends string, EIn, EOut>
-    extends Context.TagClass<Self, Id, ErrorObserver<EIn, EOut>> {
-        readonly Default: Layer.Layer<Self>
-    }
-}
-
-export const Service = <Self, EIn>() => (
-    <const Id extends string, EOut>(
-        id: Id,
-        f: (
-            self: Effect.Effect<never, NoInfer<EIn>>,
-            actions: {
-                failure(failure: NoInfer<EIn>): Effect.Effect<never>
-                defect(defect: unknown): Effect.Effect<never>
-            },
-        ) => Effect.Effect<EOut>,
-    ): Service.Result<Self, Id, EIn, EOut> => Layer.effect(
-        ErrorObserver as Context.Tag<ErrorObserver<EIn, EOut>, ErrorObserver<EIn, EOut>>,
-        Effect.gen(function*() {
-
-        },
-    ))
-)