diff --git a/server-rs/crates/platform-tripo/src/common/mod.rs b/server-rs/crates/platform-tripo/src/common/mod.rs
index 0d3b8a4d7..d6ee406c8 100644
--- a/server-rs/crates/platform-tripo/src/common/mod.rs
+++ b/server-rs/crates/platform-tripo/src/common/mod.rs
@@ -17,6 +17,6 @@ pub use types::{
     TripoTaskType, TripoUrl,
 };
 pub(crate) use validation::{
-    TripoGenerationOptions, validate_generation_options, validate_task_id,
+    TripoGenerationOptions, submitted_task_handle, validate_generation_options, validate_task_id,
 };
 pub(crate) use wire::{wire, wire_option};
diff --git a/server-rs/crates/platform-tripo/src/common/validation.rs b/server-rs/crates/platform-tripo/src/common/validation.rs
index ee19b7da8..ba6101458 100644
--- a/server-rs/crates/platform-tripo/src/common/validation.rs
+++ b/server-rs/crates/platform-tripo/src/common/validation.rs
@@ -5,7 +5,7 @@ use shared_contracts::model3d::common::{
 use shared_contracts::model3d::image_to_model::Model3dImageToModelParams;
 use shared_contracts::model3d::text_to_model::Model3dTextToModelParams;
 
-use super::{TripoError, TripoField, TripoValidationReason};
+use super::{TripoError, TripoField, TripoTaskHandle, TripoValidationReason};
 
 pub(crate) struct TripoGenerationOptions {
     pub model: Model3dModelVersion,
@@ -263,3 +263,18 @@ pub(crate) fn validate_task_id(task_id: &str) -> Result<(), TripoError> {
     }
     Ok(())
 }
+
+/// 提交成功后立刻收口 provider 返回的 task id。
+///
+/// 空白 id 是 provider 违约，不是调用方参数问题：必须在提交调用附近以 `OutputSchema`
+/// 失败，而不是拖到下游 `get_task` 才报错——那时任务已经提交出去，成为无法追踪的孤儿。
+pub(crate) fn submitted_task_handle(task_id: String) -> Result<TripoTaskHandle, TripoError> {
+    let task_id = task_id.trim().to_string();
+    if task_id.is_empty() {
+        return Err(TripoError::OutputSchema {
+            task_id: "submit".into(),
+            message: "submit response has no task_id".into(),
+        });
+    }
+    Ok(TripoTaskHandle { task_id })
+}
diff --git a/server-rs/crates/platform-tripo/src/image_to_model/client.rs b/server-rs/crates/platform-tripo/src/image_to_model/client.rs
index d058d6504..275c47dd8 100644
--- a/server-rs/crates/platform-tripo/src/image_to_model/client.rs
+++ b/server-rs/crates/platform-tripo/src/image_to_model/client.rs
@@ -3,7 +3,7 @@ use tripo3d_sdk::{models::FileInput, params::ImageToModelParams};
 
 use crate::common::{
     TripoError, TripoField, TripoProviderClient, TripoTaskHandle, TripoValidationReason,
-    extra_fields, wire, wire_option,
+    extra_fields, submitted_task_handle, wire, wire_option,
 };
 
 use super::validation::validate_image_to_model_params;
@@ -104,7 +104,7 @@ impl TripoProviderClient {
             .image_to_model(to_sdk_params(input, params)?)
             .await
             .map_err(TripoError::from)?;
-        Ok(TripoTaskHandle { task_id })
+        submitted_task_handle(task_id)
     }
 }
 
diff --git a/server-rs/crates/platform-tripo/src/multiview_to_model/client.rs b/server-rs/crates/platform-tripo/src/multiview_to_model/client.rs
index a8dba2c9f..ac4866464 100644
--- a/server-rs/crates/platform-tripo/src/multiview_to_model/client.rs
+++ b/server-rs/crates/platform-tripo/src/multiview_to_model/client.rs
@@ -5,8 +5,8 @@ use tripo3d_sdk::{models::FileInput, params::MultiviewToModelParams};
 
 use crate::common::{
     TripoError, TripoField, TripoGenerationOptions, TripoProviderClient, TripoTaskHandle,
-    TripoValidationReason, extra_fields, validate_generation_options, validate_task_id, wire,
-    wire_option,
+    TripoValidationReason, extra_fields, submitted_task_handle, validate_generation_options,
+    validate_task_id, wire, wire_option,
 };
 
 impl TripoProviderClient {
@@ -62,7 +62,7 @@ impl TripoProviderClient {
             .multiview_to_model(to_sdk_params(request)?)
             .await
             .map_err(TripoError::from)?;
-        Ok(TripoTaskHandle { task_id })
+        submitted_task_handle(task_id)
     }
 }
 /// 空白（含纯空白）视图按「未提供」处理：提交前校验与 SDK 参数转换共用这一条规则。
diff --git a/server-rs/crates/platform-tripo/src/text_to_model/client.rs b/server-rs/crates/platform-tripo/src/text_to_model/client.rs
index cc34c18f4..63c1f9f12 100644
--- a/server-rs/crates/platform-tripo/src/text_to_model/client.rs
+++ b/server-rs/crates/platform-tripo/src/text_to_model/client.rs
@@ -1,5 +1,6 @@
 use crate::common::{
-    TripoError, TripoProviderClient, TripoTaskHandle, extra_fields, wire, wire_option,
+    TripoError, TripoProviderClient, TripoTaskHandle, extra_fields, submitted_task_handle, wire,
+    wire_option,
 };
 use shared_contracts::model3d::text_to_model::Model3dTextToModelParams;
 
@@ -18,7 +19,7 @@ impl TripoProviderClient {
             .text_to_model(to_sdk_params(params)?)
             .await
             .map_err(TripoError::from)?;
-        Ok(TripoTaskHandle { task_id })
+        submitted_task_handle(task_id)
     }
 }