diff --git a/packages/shared/adapters/AiSdkToAnthropicSSE.ts b/packages/shared/adapters/AiSdkToAnthropicSSE.ts
index 08d45a09d7..a9f1508a6a 100644
--- a/packages/shared/adapters/AiSdkToAnthropicSSE.ts
+++ b/packages/shared/adapters/AiSdkToAnthropicSSE.ts
@@ -36,6 +36,8 @@ import type {
   Usage
 } from '@anthropic-ai/sdk/resources/messages'
 import { loggerService } from '@logger'
+import { reasoningCache } from '@main/apiServer/services/cache'
+import type { JSONValue } from 'ai'
 import { type FinishReason, type LanguageModelUsage, type TextStreamPart, type ToolSet } from 'ai'
 
 const logger = loggerService.withContext('AiSdkToAnthropicSSE')
@@ -74,7 +76,7 @@ export type SSEEventCallback = (event: RawMessageStreamEvent) => void
  * Interface for a simple cache that stores reasoning details
  */
 export interface ReasoningCacheInterface {
-  set(signature: string, details: unknown[]): void
+  set(signature: string, details: JSONValue): void
 }
 
 export interface AiSdkToAnthropicSSEOptions {
@@ -82,9 +84,6 @@ export interface AiSdkToAnthropicSSEOptions {
   messageId?: string
   inputTokens?: number
   onEvent: SSEEventCallback
-  /**
-   * Optional cache for storing reasoning details from providers like OpenRouter
-   */
   reasoningCache?: ReasoningCacheInterface
 }
 
@@ -186,6 +185,17 @@ export class AiSdkToAnthropicSSE {
 
       // === Tool Events ===
       case 'tool-call':
+        if (this.reasoningCache && chunk.providerMetadata?.google?.thoughtSignature) {
+          this.reasoningCache.set('google', chunk.providerMetadata?.google?.thoughtSignature)
+        }
+        // FIXME: 按toolcall id绑定
+        if (
+          this.reasoningCache &&
+          chunk.providerMetadata?.openrouter?.reasoning_details &&
+          Array.isArray(chunk.providerMetadata.openrouter.reasoning_details)
+        ) {
+          this.reasoningCache.set('openrouter', chunk.providerMetadata.openrouter.reasoning_details)
+        }
         this.handleToolCall({
           type: 'tool-call',
           toolCallId: chunk.toolCallId,
@@ -205,13 +215,6 @@ export class AiSdkToAnthropicSSE {
         break
 
       case 'finish-step':
-        if (
-          this.reasoningCache &&
-          chunk.providerMetadata?.openrouter?.reasoning_details &&
-          Array.isArray(chunk.providerMetadata.openrouter.reasoning_details)
-        ) {
-          this.reasoningCache.set('openrouter', chunk.providerMetadata.openrouter.reasoning_details)
-        }
         if (chunk.finishReason === 'tool-calls') {
           this.state.stopReason = 'tool_use'
         }
@@ -552,6 +555,7 @@ export class AiSdkToAnthropicSSE {
     }
 
     this.onEvent(messageStopEvent)
+    reasoningCache.destroy()
   }
 
   /**
diff --git a/src/main/apiServer/services/cache.ts b/src/main/apiServer/services/cache.ts
index 765ab1e1b9..39dc5b1544 100644
--- a/src/main/apiServer/services/cache.ts
+++ b/src/main/apiServer/services/cache.ts
@@ -1,11 +1,12 @@
 import { loggerService } from '@logger'
+import type { JSONValue } from 'ai'
 
 const logger = loggerService.withContext('Cache')
 /**
  * Cache entry with TTL support
  */
 interface CacheEntry<T> {
-  details: T[]
+  details: T
   timestamp: number
 }
 
@@ -28,24 +29,19 @@ export class ReasoningCache<T> {
   /**
    * Store reasoning details by signature
    */
-  set(signature: string, details: T[]): void {
-    if (!signature || !details.length) return
+  set(signature: string, details: T): void {
+    if (!signature || !details) return
 
     this.cache.set(signature, {
       details,
       timestamp: Date.now()
     })
-
-    logger.debug('Cached reasoning details', {
-      signature: signature.substring(0, 20) + '...',
-      detailsCount: details.length
-    })
   }
 
   /**
    * Retrieve reasoning details by signature
    */
-  get(signature: string): T[] | undefined {
+  get(signature: string): T | undefined {
     const entry = this.cache.get(signature)
     if (!entry) return undefined
 
@@ -55,11 +51,6 @@ export class ReasoningCache<T> {
       return undefined
     }
 
-    logger.debug('Retrieved reasoning details from cache', {
-      signature: signature.substring(0, 20) + '...',
-      detailsCount: entry.details.length
-    })
-
     return entry.details
   }
 
@@ -113,4 +104,4 @@ export class ReasoningCache<T> {
 }
 
 // Singleton cache instance
-export const reasoningCache = new ReasoningCache()
+export const reasoningCache = new ReasoningCache<JSONValue>()
diff --git a/src/main/apiServer/services/unified-messages.ts b/src/main/apiServer/services/unified-messages.ts
index 063885d72c..af97941f2b 100644
--- a/src/main/apiServer/services/unified-messages.ts
+++ b/src/main/apiServer/services/unified-messages.ts
@@ -301,11 +301,24 @@ function convertAnthropicToAiMessages(params: MessageCreateParams): ModelMessage
             imageParts.push({ type: 'image', image: source.url })
           }
         } else if (block.type === 'tool_use') {
+          const options: ProviderOptions = {}
+          if (isGemini3ModelId(params.model)) {
+            if (reasoningCache.get('google')) {
+              options.google = {
+                thoughtSignature: MAGIC_STRING
+              }
+            } else if (reasoningCache.get('openrouter')) {
+              options.openrouter = {
+                reasoning_details: (reasoningCache.get('openrouter') as JSONValue[]) || []
+              }
+            }
+          }
           toolCallParts.push({
             type: 'tool-call',
             toolName: block.name,
             toolCallId: block.id,
-            input: block.input
+            input: block.input,
+            providerOptions: options
           })
         } else if (block.type === 'tool_result') {
           // Look up toolName from the pre-built map (covers cross-message references)