progress_token is 0 on first tool-call and the return is taken mistakenly

2025-01-27 19:04:20 -08:00 · 2025-01-27 19:04:20 -08:00 · 76325b7846
commit 76325b7846
parent 978cfe3f92
1 changed files with 1 additions and 1 deletions
--- a/src/mcp/server/fastmcp/server.py
+++ b/src/mcp/server/fastmcp/server.py
@ -599,7 +599,7 @@ class Context(BaseModel):
            else None
        )

-        if not progress_token:
+        if progress_token == None:
            return

        await self.request_context.session.send_progress_notification(