diff --git a/src/hooks/new.ts b/src/hooks/new.ts
index cb63f272..f2c30f10 100644
--- a/src/hooks/new.ts
+++ b/src/hooks/new.ts
@@ -13,8 +13,20 @@ export interface UserPromptSubmitInput {
  * New Hook - UserPromptSubmit
  * Initializes SDK memory session in background
  */
-export function newHook(input: UserPromptSubmitInput): void {
+export function newHook(input?: UserPromptSubmitInput): void {
   try {
+    // Handle standalone execution (no input provided)
+    if (!input) {
+      console.log('No input provided - this script is designed to run as a Claude Code UserPromptSubmit hook');
+      console.log('\nExpected input format:');
+      console.log(JSON.stringify({
+        session_id: "string",
+        cwd: "string",
+        prompt: "string"
+      }, null, 2));
+      process.exit(0);
+    }
+
     const { session_id, cwd, prompt } = input;
 
     // Extract project from cwd
diff --git a/src/hooks/save.ts b/src/hooks/save.ts
index a56c4605..35ebf547 100644
--- a/src/hooks/save.ts
+++ b/src/hooks/save.ts
@@ -21,8 +21,22 @@ const SKIP_TOOLS = new Set([
  * Save Hook - PostToolUse
  * Sends tool observations to worker via Unix socket
  */
-export function saveHook(input: PostToolUseInput): void {
+export function saveHook(input?: PostToolUseInput): void {
   try {
+    // Handle standalone execution (no input provided)
+    if (!input) {
+      console.log('No input provided - this script is designed to run as a Claude Code PostToolUse hook');
+      console.log('\nExpected input format:');
+      console.log(JSON.stringify({
+        session_id: "string",
+        cwd: "string",
+        tool_name: "string",
+        tool_input: {},
+        tool_output: {}
+      }, null, 2));
+      process.exit(0);
+    }
+
     const { session_id, tool_name, tool_input, tool_output } = input;
 
     // Skip certain tools
diff --git a/src/hooks/summary.ts b/src/hooks/summary.ts
index f492c8f9..e7c5522a 100644
--- a/src/hooks/summary.ts
+++ b/src/hooks/summary.ts
@@ -12,8 +12,19 @@ export interface StopInput {
  * Summary Hook - Stop
  * Sends FINALIZE message to worker via Unix socket
  */
-export function summaryHook(input: StopInput): void {
+export function summaryHook(input?: StopInput): void {
   try {
+    // Handle standalone execution (no input provided)
+    if (!input) {
+      console.log('No input provided - this script is designed to run as a Claude Code Stop hook');
+      console.log('\nExpected input format:');
+      console.log(JSON.stringify({
+        session_id: "string",
+        cwd: "string"
+      }, null, 2));
+      process.exit(0);
+    }
+
     const { session_id } = input;
 
     // Find active SDK session