From 35cfc7c517ab9fa3de085bdb6a5f38282716919e Mon Sep 17 00:00:00 2001
From: suyao <sy20010504@gmail.com>
Date: Sat, 29 Nov 2025 19:12:56 +0800
Subject: [PATCH] feat: add sanitizeToolsForAnthropic function to clean tool
 definitions for Anthropic API

---
 packages/shared/anthropic/index.ts      | 30 ++++++++++++++++++++++++-
 src/main/apiServer/services/messages.ts |  5 +++--
 2 files changed, 32 insertions(+), 3 deletions(-)

diff --git a/packages/shared/anthropic/index.ts b/packages/shared/anthropic/index.ts
index 2444ad6113..e2113eb749 100644
--- a/packages/shared/anthropic/index.ts
+++ b/packages/shared/anthropic/index.ts
@@ -9,7 +9,7 @@
  */
 
 import Anthropic from '@anthropic-ai/sdk'
-import type { TextBlockParam } from '@anthropic-ai/sdk/resources'
+import type { MessageCreateParams, TextBlockParam, Tool as AnthropicTool } from '@anthropic-ai/sdk/resources'
 import { loggerService } from '@logger'
 import type { Provider } from '@types'
 import type { ModelMessage } from 'ai'
@@ -193,3 +193,31 @@ export function buildClaudeCodeSystemModelMessage(system?: string | Array<TextBl
     content: block.text
   }))
 }
+
+/**
+ * Sanitize tool definitions for Anthropic API.
+ *
+ * Removes non-standard fields like `input_examples` from tool definitions
+ * that Anthropic's API doesn't support. This prevents validation errors when
+ * tools with extended fields are passed to the Anthropic SDK.
+ *
+ * @param tools - Array of tool definitions from MessageCreateParams
+ * @returns Sanitized tools array with non-standard fields removed
+ *
+ * @example
+ * ```typescript
+ * const sanitizedTools = sanitizeToolsForAnthropic(request.tools)
+ * ```
+ */
+export function sanitizeToolsForAnthropic(tools?: MessageCreateParams['tools']): MessageCreateParams['tools'] {
+  if (!tools || tools.length === 0) return tools
+
+  return tools.map((tool) => {
+    if ('type' in tool && tool.type !== 'custom') return tool
+
+    // oxlint-disable-next-line no-unused-vars
+    const { input_examples, ...sanitizedTool } = tool as AnthropicTool & { input_examples?: unknown }
+
+    return sanitizedTool as typeof tool
+  })
+}
diff --git a/src/main/apiServer/services/messages.ts b/src/main/apiServer/services/messages.ts
index e2c9ad24e2..957c066520 100644
--- a/src/main/apiServer/services/messages.ts
+++ b/src/main/apiServer/services/messages.ts
@@ -2,7 +2,7 @@ import type Anthropic from '@anthropic-ai/sdk'
 import type { MessageCreateParams, MessageStreamEvent } from '@anthropic-ai/sdk/resources'
 import { loggerService } from '@logger'
 import anthropicService from '@main/services/AnthropicService'
-import { buildClaudeCodeSystemMessage, getSdkClient } from '@shared/anthropic'
+import { buildClaudeCodeSystemMessage, getSdkClient, sanitizeToolsForAnthropic } from '@shared/anthropic'
 import type { Provider } from '@types'
 import { APICallError, RetryError } from 'ai'
 import { net } from 'electron'
@@ -148,7 +148,8 @@ export class MessagesService {
   createAnthropicRequest(request: MessageCreateParams, provider: Provider, modelId?: string): MessageCreateParams {
     const anthropicRequest: MessageCreateParams = {
       ...request,
-      stream: !!request.stream
+      stream: !!request.stream,
+      tools: sanitizeToolsForAnthropic(request.tools)
     }
 
     // Override model if provided