diff --git a/tools/ai-cli-dispatch/src/execute.ts b/tools/ai-cli-dispatch/src/execute.ts
index 626acf4..56d10e3 100644
--- a/tools/ai-cli-dispatch/src/execute.ts
+++ b/tools/ai-cli-dispatch/src/execute.ts
@@ -77,8 +77,12 @@ export async function executePrompt(
 
     const child = spawnImpl(command, args, {
       shell: false,
+      stdio: ["pipe", "pipe", "pipe"],
     });
 
+    // Close stdin immediately so clients like codex don't hang waiting for input
+    child.stdin?.end();
+
     child.stdout?.on("data", (chunk: Buffer | string) => {
       stdout += chunk.toString();
     });
diff --git a/tools/ai-cli-dispatch/src/jobs.ts b/tools/ai-cli-dispatch/src/jobs.ts
index a027cff..c5bfc36 100644
--- a/tools/ai-cli-dispatch/src/jobs.ts
+++ b/tools/ai-cli-dispatch/src/jobs.ts
@@ -118,9 +118,12 @@ export async function startJob(
     const child = spawnImpl(command, args, {
       detached: true,
       shell: false,
-      stdio: ["ignore", "pipe", "pipe"],
+      stdio: ["pipe", "pipe", "pipe"],
     });
 
+    // Close stdin immediately so clients like codex don't hang waiting for input
+    child.stdin?.end();
+
     record.pid = child.pid ?? undefined;
     writeJobFile(jobDir, record, fs);