adopted float instead of timedelta for timeout parameters (openai#874)

I replaced the `timedelta` parameters for MCP timeouts with `float`
values, addressing issue openai#845 .

Given that the MCP official repository has incorporated these changes in
[this PR](modelcontextprotocol/python-sdk#941),
updating the MCP version in openai-agents and specifying the timeouts as
floats should be enough.

Author: DanieleMorotti

pyproject.toml

@@ -13,7 +13,7 @@ dependencies = [
     "typing-extensions>=4.12.2, <5",
     "requests>=2.0, <3",
     "types-requests>=2.0, <3",
-    "mcp>=1.8.0, <2; python_version >= '3.10'",
+    "mcp>=1.9.4, <2; python_version >= '3.10'",
 ]
 classifiers = [
     "Typing :: Typed",

src/agents/mcp/server.py

@@ -340,10 +340,10 @@ class MCPServerStreamableHttpParams(TypedDict):
     headers: NotRequired[dict[str, str]]
     """The headers to send to the server."""
 
-    timeout: NotRequired[timedelta]
+    timeout: NotRequired[timedelta | float]
     """The timeout for the HTTP request. Defaults to 5 seconds."""
 
-    sse_read_timeout: NotRequired[timedelta]
+    sse_read_timeout: NotRequired[timedelta | float]
     """The timeout for the SSE connection, in seconds. Defaults to 5 minutes."""
 
     terminate_on_close: NotRequired[bool]
@@ -401,8 +401,8 @@ def create_streams(
         return streamablehttp_client(
             url=self.params["url"],
             headers=self.params.get("headers", None),
-            timeout=self.params.get("timeout", timedelta(seconds=30)),
-            sse_read_timeout=self.params.get("sse_read_timeout", timedelta(seconds=60 * 5)),
+            timeout=self.params.get("timeout", 5),
+            sse_read_timeout=self.params.get("sse_read_timeout", 60 * 5),
             terminate_on_close=self.params.get("terminate_on_close", True),
         )