diff --git a/src/features/hook-message-injector/injector.ts b/src/features/hook-message-injector/injector.ts
index e2fdafbc..9567a11a 100644
--- a/src/features/hook-message-injector/injector.ts
+++ b/src/features/hook-message-injector/injector.ts
@@ -1,12 +1,12 @@
 import { existsSync, mkdirSync, readFileSync, readdirSync, writeFileSync } from "node:fs"
 import { join } from "node:path"
 import { MESSAGE_STORAGE, PART_STORAGE } from "./constants"
-import type { MessageMeta, OriginalMessageContext, TextPart } from "./types"
+import type { MessageMeta, OriginalMessageContext, TextPart, ToolPermission } from "./types"
 
 export interface StoredMessage {
   agent?: string
   model?: { providerID?: string; modelID?: string }
-  tools?: Record<string, boolean>
+  tools?: Record<string, ToolPermission>
 }
 
 export function findNearestMessageWithFields(messageDir: string): StoredMessage | null {
diff --git a/src/features/hook-message-injector/types.ts b/src/features/hook-message-injector/types.ts
index 165a83df..47caaf93 100644
--- a/src/features/hook-message-injector/types.ts
+++ b/src/features/hook-message-injector/types.ts
@@ -1,3 +1,5 @@
+export type ToolPermission = boolean | "allow" | "deny" | "ask"
+
 export interface MessageMeta {
   id: string
   sessionID: string
@@ -15,7 +17,7 @@ export interface MessageMeta {
     cwd: string
     root: string
   }
-  tools?: Record<string, boolean>
+  tools?: Record<string, ToolPermission>
 }
 
 export interface OriginalMessageContext {
@@ -28,7 +30,7 @@ export interface OriginalMessageContext {
     cwd?: string
     root?: string
   }
-  tools?: Record<string, boolean>
+  tools?: Record<string, ToolPermission>
 }
 
 export interface TextPart {