diff --git a/.changeset/moody-humans-grow.md b/.changeset/moody-humans-grow.md
new file mode 100644
index 000000000..469df9d29
--- /dev/null
+++ b/.changeset/moody-humans-grow.md
@@ -0,0 +1,5 @@
+---
+'@modelcontextprotocol/server': patch
+---
+
+Modify registerPrompt to accept undefined Args type
diff --git a/packages/server/src/server/mcp.ts b/packages/server/src/server/mcp.ts
index 27b308285..c46487031 100644
--- a/packages/server/src/server/mcp.ts
+++ b/packages/server/src/server/mcp.ts
@@ -847,7 +847,7 @@ export class McpServer {
     /**
      * Registers a prompt with a config object and callback.
      */
-    registerPrompt<Args extends AnySchema>(
+    registerPrompt<Args extends AnySchema | undefined = undefined>(
         name: string,
         config: {
             title?: string;