feat(search_tool): gate search_tool on model supports_search_tool field (#14502)

codex-rs/core/tests/suite/model_switching.rs

@@ -55,6 +55,7 @@ fn test_model_info(
         input_modalities,
         prefer_websockets: false,
         used_fallback_model_metadata: false,
+        supports_search_tool: false,
         priority: 1,
         upgrade: None,
         base_instructions: "base instructions".to_string(),
@@ -675,6 +676,7 @@ async fn model_switch_to_smaller_model_updates_token_context_window() -> Result<
         input_modalities: default_input_modalities(),
         prefer_websockets: false,
         used_fallback_model_metadata: false,
+        supports_search_tool: false,
         priority: 1,
         upgrade: None,
         base_instructions: "base instructions".to_string(),

codex-rs/core/tests/suite/models_cache_ttl.rs

@@ -353,5 +353,6 @@ fn test_remote_model(slug: &str, priority: i32) -> ModelInfo {
         input_modalities: default_input_modalities(),
         prefer_websockets: false,
         used_fallback_model_metadata: false,
+        supports_search_tool: false,
     }
 }

codex-rs/core/tests/suite/personality.rs

@@ -658,6 +658,7 @@ async fn remote_model_friendly_personality_instructions_with_feature() -> anyhow
         input_modalities: default_input_modalities(),
         prefer_websockets: false,
         used_fallback_model_metadata: false,
+        supports_search_tool: false,
     };
 
     let _models_mock = mount_models_once(
@@ -773,6 +774,7 @@ async fn user_turn_personality_remote_model_template_includes_update_message() -
         input_modalities: default_input_modalities(),
         prefer_websockets: false,
         used_fallback_model_metadata: false,
+        supports_search_tool: false,
     };
 
     let _models_mock = mount_models_once(

codex-rs/core/tests/suite/remote_models.rs

@@ -291,6 +291,7 @@ async fn remote_models_remote_model_uses_unified_exec() -> Result<()> {
         input_modalities: default_input_modalities(),
         prefer_websockets: false,
         used_fallback_model_metadata: false,
+        supports_search_tool: false,
         priority: 1,
         upgrade: None,
         base_instructions: "base instructions".to_string(),
@@ -533,6 +534,7 @@ async fn remote_models_apply_remote_base_instructions() -> Result<()> {
         input_modalities: default_input_modalities(),
         prefer_websockets: false,
         used_fallback_model_metadata: false,
+        supports_search_tool: false,
         priority: 1,
         upgrade: None,
         base_instructions: remote_base.to_string(),
@@ -999,6 +1001,7 @@ fn test_remote_model_with_policy(
         input_modalities: default_input_modalities(),
         prefer_websockets: false,
         used_fallback_model_metadata: false,
+        supports_search_tool: false,
         priority,
         upgrade: None,
         base_instructions: "base instructions".to_string(),

codex-rs/core/tests/suite/rmcp_client.rs

@@ -421,6 +421,7 @@ async fn stdio_image_responses_are_sanitized_for_text_only_model() -> anyhow::Re
                 input_modalities: vec![InputModality::Text],
                 prefer_websockets: false,
                 used_fallback_model_metadata: false,
+                supports_search_tool: false,
             }],
         },
     )

codex-rs/core/tests/suite/search_tool.rs

@@ -5,6 +5,7 @@ use anyhow::Result;
 use codex_core::CodexAuth;
 use codex_core::config::Config;
 use codex_core::features::Feature;
+use codex_protocol::openai_models::ModelsResponse;
 use codex_protocol::protocol::AskForApproval;
 use codex_protocol::protocol::EventMsg;
 use codex_protocol::protocol::McpInvocation;
@@ -93,6 +94,17 @@ fn configure_apps(config: &mut Config, apps_base_url: &str) {
         .disable(Feature::AppsMcpGateway)
         .expect("test config should allow feature update");
     config.chatgpt_base_url = apps_base_url.to_string();
+    config.model = Some("gpt-5-codex".to_string());
+
+    let mut model_catalog: ModelsResponse =
+        serde_json::from_str(include_str!("../../models.json")).expect("valid models.json");
+    let model = model_catalog
+        .models
+        .iter_mut()
+        .find(|model| model.slug == "gpt-5-codex")
+        .expect("gpt-5-codex exists in bundled models.json");
+    model.supports_search_tool = true;
+    config.model_catalog = Some(model_catalog);
 }
 
 fn configured_builder(apps_base_url: String) -> TestCodexBuilder {

codex-rs/core/tests/suite/spawn_agent_description.rs

@@ -66,6 +66,7 @@ fn test_model_info(
         input_modalities: default_input_modalities(),
         prefer_websockets: false,
         used_fallback_model_metadata: false,
+        supports_search_tool: false,
         priority: 1,
         upgrade: None,
         base_instructions: "base instructions".to_string(),

codex-rs/core/tests/suite/view_image.rs

@@ -1272,6 +1272,7 @@ async fn view_image_tool_returns_unsupported_message_for_text_only_model() -> an
         input_modalities: vec![InputModality::Text],
         prefer_websockets: false,
         used_fallback_model_metadata: false,
+        supports_search_tool: false,
         priority: 1,
         upgrade: None,
         base_instructions: "base instructions".to_string(),