diff --git a/packages/network-controller/CHANGELOG.md b/packages/network-controller/CHANGELOG.md
index ea3b150a899..6c22b08f2dd 100644
--- a/packages/network-controller/CHANGELOG.md
+++ b/packages/network-controller/CHANGELOG.md
@@ -34,6 +34,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Deprecated
 
 - `NetworkControllerGetNetworkConfigurationByNetworkClientId` type is deprecated in favor of `NetworkControllerGetNetworkConfigurationByNetworkClientIdAction` ([#8350](https://github.com/MetaMask/core/pull/8350))
+- Deprecate `AbstractRpcService` and `RpcServiceRequestable` ([#8475](https://github.com/MetaMask/core/pull/8475))
+  - There are no equivalents to these interfaces. If you need to take an "RPC-service-like" argument, it's best to declare which properties you're interested in rather than accepting the entire RPC service interface.
 
 ## [30.0.1]
 
diff --git a/packages/network-controller/src/rpc-service/abstract-rpc-service.ts b/packages/network-controller/src/rpc-service/abstract-rpc-service.ts
index 81d78442918..7769f88c055 100644
--- a/packages/network-controller/src/rpc-service/abstract-rpc-service.ts
+++ b/packages/network-controller/src/rpc-service/abstract-rpc-service.ts
@@ -3,6 +3,11 @@ import type { RpcServiceRequestable } from './rpc-service-requestable';
 /**
  * The interface for a service class responsible for making a request to an RPC
  * endpoint or a group of RPC endpoints.
+ *
+ * @deprecated Don't use this interface (it will be removed in an upcoming major
+ * version). If you need to take an "RPC-service-like" argument, it's best to
+ * declare which properties you're interested in rather than accepting the
+ * entire RPC service interface.
  */
 export type AbstractRpcService = RpcServiceRequestable & {
   /**
diff --git a/packages/network-controller/src/rpc-service/rpc-service-requestable.ts b/packages/network-controller/src/rpc-service/rpc-service-requestable.ts
index 2433f60634e..6283a704736 100644
--- a/packages/network-controller/src/rpc-service/rpc-service-requestable.ts
+++ b/packages/network-controller/src/rpc-service/rpc-service-requestable.ts
@@ -18,6 +18,11 @@ import type {
  * The interface for a service class responsible for making a request to a
  * target, whether that is a single RPC endpoint or an RPC endpoint in an RPC
  * service chain.
+ *
+ * @deprecated Don't use this interface (it will be removed in an upcoming major
+ * version). If you need to take an "RPC-service-like" argument, it's best to
+ * declare which properties you're interested in rather than accepting the
+ * entire RPC service interface.
  */
 export type RpcServiceRequestable = {
   /**
diff --git a/packages/network-controller/src/rpc-service/rpc-service.ts b/packages/network-controller/src/rpc-service/rpc-service.ts
index b4f2f42526e..17b6f85aa3e 100644
--- a/packages/network-controller/src/rpc-service/rpc-service.ts
+++ b/packages/network-controller/src/rpc-service/rpc-service.ts
@@ -16,13 +16,18 @@ import type {
   JsonRpcRequest,
   JsonRpcResponse,
 } from '@metamask/utils';
-import { CircuitState, IDisposable } from 'cockatiel';
+import { CircuitState } from 'cockatiel';
 import deepmerge from 'deepmerge';
 import type { Logger } from 'loglevel';
 
 import { projectLogger, createModuleLogger } from '../logger';
-import type { AbstractRpcService } from './abstract-rpc-service';
-import type { FetchOptions } from './shared';
+import type {
+  CockatielEventToEventListenerWithData,
+  ExcludeCockatielEventData,
+  ExtendCockatielEventData,
+  ExtractCockatielEventData,
+  FetchOptions,
+} from './shared';
 
 /**
  * Options for the RpcService constructor.
@@ -274,7 +279,7 @@ function stripCredentialsFromUrl(url: URL): URL {
  * failures, retrying requests using exponential backoff. It also offers a hook
  * which can used to respond to slow requests.
  */
-export class RpcService implements AbstractRpcService {
+export class RpcService {
   /**
    * The URL of the RPC endpoint.
    */
@@ -395,7 +400,12 @@ export class RpcService implements AbstractRpcService {
    * @returns What {@link ServicePolicy.onRetry} returns.
    * @see {@link createServicePolicy}
    */
-  onRetry(listener: Parameters<AbstractRpcService['onRetry']>[0]): IDisposable {
+  onRetry(
+    listener: CockatielEventToEventListenerWithData<
+      ServicePolicy['onRetry'],
+      { endpointUrl: string }
+    >,
+  ): ReturnType<ServicePolicy['onRetry']> {
     return this.#policy.onRetry((data) => {
       listener({ ...data, endpointUrl: this.endpointUrl.toString() });
     });
@@ -409,7 +419,17 @@ export class RpcService implements AbstractRpcService {
    * @returns What {@link ServicePolicy.onBreak} returns.
    * @see {@link createServicePolicy}
    */
-  onBreak(listener: Parameters<AbstractRpcService['onBreak']>[0]): IDisposable {
+  onBreak(
+    listener: (
+      data: ExcludeCockatielEventData<
+        ExtendCockatielEventData<
+          ExtractCockatielEventData<ServicePolicy['onBreak']>,
+          { endpointUrl: string }
+        >,
+        'isolated'
+      >,
+    ) => void,
+  ): ReturnType<ServicePolicy['onBreak']> {
     return this.#policy.onBreak((data) => {
       // `{ isolated: true }` is a special object that shows up when `isolate`
       // is called on the circuit breaker. Usually `isolate` is used to hold the
@@ -440,8 +460,11 @@ export class RpcService implements AbstractRpcService {
    * @see {@link createServicePolicy}
    */
   onDegraded(
-    listener: Parameters<AbstractRpcService['onDegraded']>[0],
-  ): IDisposable {
+    listener: CockatielEventToEventListenerWithData<
+      ServicePolicy['onDegraded'],
+      { endpointUrl: string; rpcMethodName: string }
+    >,
+  ): ReturnType<ServicePolicy['onDegraded']> {
     return this.#policy.onDegraded((data) => {
       if (data === undefined) {
         listener({
@@ -466,8 +489,11 @@ export class RpcService implements AbstractRpcService {
    * @see {@link createServicePolicy}
    */
   onAvailable(
-    listener: Parameters<AbstractRpcService['onAvailable']>[0],
-  ): IDisposable {
+    listener: CockatielEventToEventListenerWithData<
+      ServicePolicy['onAvailable'],
+      { endpointUrl: string }
+    >,
+  ): ReturnType<ServicePolicy['onAvailable']> {
     return this.#policy.onAvailable(() => {
       listener({ endpointUrl: this.endpointUrl.toString() });
     });