auto apply header

Author: christian-bromann

libs/providers/langchain-anthropic/src/tools/tests/webFetch.int.test.ts

@@ -13,11 +13,6 @@ const createModel = () =>
   new ChatAnthropic({
     model: "claude-sonnet-4-5",
     temperature: 0,
-    clientOptions: {
-      defaultHeaders: {
-        "anthropic-beta": "web-fetch-2025-09-10",
-      },
-    },
   });
 
 describe("Anthropic Web Fetch Tool Integration Tests", () => {

libs/providers/langchain-anthropic/src/tools/webFetch.ts

@@ -57,11 +57,6 @@ interface WebFetch20250910Options {
  *
  * const model = new ChatAnthropic({
  *   model: "claude-sonnet-4-5-20250929",
- *   clientOptions: {
- *     defaultHeaders: {
- *       "anthropic-beta": "web-fetch-2025-09-10",
- *     },
- *   },
  * });
  *
  * // Basic usage - fetch content from a URL

libs/providers/langchain-anthropic/src/utils/tools.ts

@@ -54,4 +54,5 @@ export const ANTHROPIC_TOOL_BETAS: Record<string, string> = {
   tool_search_tool_regex_20251119: "advanced-tool-use-2025-11-20",
   tool_search_tool_bm25_20251119: "advanced-tool-use-2025-11-20",
   memory_20250818: "context-management-2025-06-27",
+  web_fetch_20250910: "web-fetch-2025-09-10",
 };