From dbf560f24ae9778ecd8fafd299f5824b53dd3e7b Mon Sep 17 00:00:00 2001
From: Justin Spahr-Summers <justin@anthropic.com>
Date: Wed, 22 Jan 2025 11:40:26 +0000
Subject: [PATCH] Don't double-add completion handler

---
 src/server/mcp.ts | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/server/mcp.ts b/src/server/mcp.ts
index 36d9341d..d71eecb5 100644
--- a/src/server/mcp.ts
+++ b/src/server/mcp.ts
@@ -175,7 +175,13 @@ export class McpServer {
     this._toolHandlersInitialized = true;
   }
 
+  private _completionHandlerInitialized = false;
+
   private setCompletionRequestHandler() {
+    if (this._completionHandlerInitialized) {
+      return;
+    }
+
     this.server.assertCanSetRequestHandler(
       CompleteRequestSchema.shape.method.value,
     );
@@ -198,6 +204,8 @@ export class McpServer {
         }
       },
     );
+
+    this._completionHandlerInitialized = true;
   }
 
   private async handlePromptCompletion(