diff --git a/rpc/src/core/client.ts b/rpc/src/core/client.ts
index 09b00ff..12d5a55 100644
--- a/rpc/src/core/client.ts
+++ b/rpc/src/core/client.ts
@@ -18,20 +18,6 @@ import {
 } from '../utils/types'
 import { Wrapper } from './wrapper'
 
-declare function onNet(eventName: string, callback: Function): void
-declare function emitNet(eventName: string, ...args: unknown[]): void
-declare function on(eventName: string, callback: Function): void
-declare function RegisterNuiCallbackType(callbackType: string): void
-declare function GetPlayerServerId(player: number): number
-declare function PlayerId(): number
-declare function SetNuiFocus(hasFocus: boolean, hasCursor: boolean): void
-declare function RegisterCommand(
-	commandName: string,
-	handler: Function,
-	restricted: boolean,
-): void
-declare function SendNuiMessage(jsonString: string): boolean
-
 export class RPCInstanceClient extends Wrapper {
 	private readonly _emitterServer: Emitter
 	private readonly _pendingServer: Emitter
diff --git a/rpc/src/core/server.ts b/rpc/src/core/server.ts
index 26407f0..8cb72fc 100644
--- a/rpc/src/core/server.ts
+++ b/rpc/src/core/server.ts
@@ -13,15 +13,6 @@ import {
 } from '../utils/types'
 import { Wrapper } from './wrapper'
 
-declare function onNet(eventName: string, callback: Function): void
-declare function emitNet(eventName: string, ...args: unknown[]): void
-declare function on(eventName: string, callback: Function): void
-declare function RegisterCommand(
-	commandName: string,
-	handler: Function,
-	restricted: boolean,
-): void
-
 export class RPCInstanceServer extends Wrapper {
 	private readonly _emitterClient: Emitter
 	private readonly _pendingClient: Emitter
diff --git a/rpc/src/core/webview.ts b/rpc/src/core/webview.ts
index 837fadb..4f0a1d5 100644
--- a/rpc/src/core/webview.ts
+++ b/rpc/src/core/webview.ts
@@ -11,12 +11,6 @@ import {
 } from '../utils/types'
 import { Wrapper } from './wrapper'
 
-declare global {
-	interface Window {
-		GetParentResourceName?: () => string
-	}
-}
-
 export class RPCInstanceWebview extends Wrapper {
 	private readonly _emitterClient: Emitter
 	private readonly _emitterServer: Emitter
diff --git a/rpc/src/fivem.d.ts b/rpc/src/fivem.d.ts
new file mode 100644
index 0000000..3d9a00a
--- /dev/null
+++ b/rpc/src/fivem.d.ts
@@ -0,0 +1,36 @@
+/*
+FiveM runtime globals used by this library. Internal: not part of the published types, so consumers are free to use @citizenfx/*.
+See https://docs.fivem.net/docs/scripting-reference/runtimes/javascript/
+*/
+
+// ===== SHARED (client + server) =====
+
+declare function on<A extends unknown[]>(
+	eventName: string,
+	callback: (...args: A) => unknown,
+): void
+declare function onNet<A extends unknown[]>(
+	eventName: string,
+	callback: (...args: A) => unknown,
+): void
+/** Server: `emitNet(eventName, target, ...args)` */
+declare function emitNet(eventName: string, ...args: unknown[]): void
+declare function RegisterCommand<A extends unknown[]>(
+	commandName: string,
+	handler: (source: number, args: A, rawCommand: string) => unknown,
+	restricted: boolean,
+): void
+
+// ===== CLIENT =====
+
+declare function RegisterNuiCallbackType(callbackType: string): void
+declare function GetPlayerServerId(player: number): number
+declare function PlayerId(): number
+declare function SetNuiFocus(hasFocus: boolean, hasCursor: boolean): void
+declare function SendNuiMessage(jsonString: string): boolean
+
+// ===== WEBVIEW (NUI) =====
+
+interface Window {
+	GetParentResourceName?: () => string
+}