update headers to dict[str, str]

Author: ihrpr

src/mcp/shared/httpx_utils.py

@@ -1,7 +1,5 @@
 """Utilities for creating standardized httpx AsyncClient instances."""
 
-from __future__ import annotations
-
 from typing import Any
 
 import httpx
@@ -10,7 +8,7 @@
 
 
 def create_mcp_http_client(
-    headers: dict[str, Any] | None = None,
+    headers: dict[str, str] | None = None,
     timeout: httpx.Timeout | None = None,
 ) -> httpx.AsyncClient:
     """Create a standardized httpx AsyncClient with MCP defaults.
@@ -61,4 +59,4 @@ def create_mcp_http_client(
     if headers is not None:
         kwargs["headers"] = headers
 
-    return httpx.AsyncClient(**kwargs)
+    return httpx.AsyncClient(**kwargs)