diff --git a/codex-rs/core/src/tools/spec_tests.rs b/codex-rs/core/src/tools/spec_tests.rs
index 16f87ca50..c914ee517 100644
--- a/codex-rs/core/src/tools/spec_tests.rs
+++ b/codex-rs/core/src/tools/spec_tests.rs
@@ -551,8 +551,9 @@ fn test_build_specs_multi_agent_v2_uses_task_names_and_hides_resume() {
     else {
         panic!("wait_agent should use object params");
     };
-    assert!(properties.contains_key("targets"));
-    assert_eq!(required.as_ref(), Some(&vec!["targets".to_string()]));
+    assert!(!properties.contains_key("targets"));
+    assert!(properties.contains_key("timeout_ms"));
+    assert_eq!(required, &None);
     let output_schema = output_schema
         .as_ref()
         .expect("wait_agent should define output schema");
diff --git a/codex-rs/tools/src/agent_tool.rs b/codex-rs/tools/src/agent_tool.rs
index 87f5bbd9e..03b3df5c1 100644
--- a/codex-rs/tools/src/agent_tool.rs
+++ b/codex-rs/tools/src/agent_tool.rs
@@ -695,31 +695,19 @@ fn wait_agent_tool_parameters_v1(options: WaitAgentTimeoutOptions) -> JsonSchema
 }
 
 fn wait_agent_tool_parameters_v2(options: WaitAgentTimeoutOptions) -> JsonSchema {
-    let properties = BTreeMap::from([
-        (
-            "targets".to_string(),
-            JsonSchema::Array {
-                items: Box::new(JsonSchema::String { description: None }),
-                description: Some(
-                    "Agent ids or canonical task names to wait on. Pass multiple targets to wait for whichever finishes first."
-                        .to_string(),
-                ),
-            },
-        ),
-        (
-            "timeout_ms".to_string(),
-            JsonSchema::Number {
-                description: Some(format!(
-                    "Optional timeout in milliseconds. Defaults to {}, min {}, max {}. Prefer longer waits (minutes) to avoid busy polling.",
-                    options.default_timeout_ms, options.min_timeout_ms, options.max_timeout_ms,
-                )),
-            },
-        ),
-    ]);
+    let properties = BTreeMap::from([(
+        "timeout_ms".to_string(),
+        JsonSchema::Number {
+            description: Some(format!(
+                "Optional timeout in milliseconds. Defaults to {}, min {}, max {}. Prefer longer waits (minutes) to avoid busy polling.",
+                options.default_timeout_ms, options.min_timeout_ms, options.max_timeout_ms,
+            )),
+        },
+    )]);
 
     JsonSchema::Object {
         properties,
-        required: Some(vec!["targets".to_string()]),
+        required: None,
         additional_properties: Some(false.into()),
     }
 }
diff --git a/codex-rs/tools/src/agent_tool_tests.rs b/codex-rs/tools/src/agent_tool_tests.rs
index 735a6ba4d..f483b97e0 100644
--- a/codex-rs/tools/src/agent_tool_tests.rs
+++ b/codex-rs/tools/src/agent_tool_tests.rs
@@ -101,7 +101,7 @@ fn send_message_tool_requires_items_and_uses_submission_output() {
 }
 
 #[test]
-fn wait_agent_tool_v2_uses_task_targets_and_summary_output() {
+fn wait_agent_tool_v2_uses_timeout_only_summary_output() {
     let ToolSpec::Function(ResponsesApiTool {
         parameters,
         output_schema,
@@ -114,17 +114,17 @@ fn wait_agent_tool_v2_uses_task_targets_and_summary_output() {
     else {
         panic!("wait_agent should be a function tool");
     };
-    let JsonSchema::Object { properties, .. } = parameters else {
+    let JsonSchema::Object {
+        properties,
+        required,
+        ..
+    } = parameters
+    else {
         panic!("wait_agent should use object params");
     };
-    let Some(JsonSchema::Array {
-        description: Some(description),
-        ..
-    }) = properties.get("targets")
-    else {
-        panic!("wait_agent should define targets array");
-    };
-    assert!(description.contains("canonical task names"));
+    assert!(!properties.contains_key("targets"));
+    assert!(properties.contains_key("timeout_ms"));
+    assert_eq!(required, None);
     assert_eq!(
         output_schema.expect("wait output schema")["properties"]["message"]["description"],
         json!("Brief wait summary without the agent's final content.")