Make creating the default

Author: cnunciato

pkg/buildkite/pipelines.go

@@ -317,7 +317,8 @@ func CreatePipeline(client PipelinesClient) (tool mcp.Tool, handler mcp.TypedToo
 				mcp.Description("Cancel running builds when new builds are created on the same branch"),
 			),
 			mcp.WithBoolean("create_webhook",
-				mcp.Description("Create a GitHub webhook for the pipeline to trigger builds in response to pull-request and push events. Only works for pipelines and repositories configured with the Buildkite GitHub app"),
+				mcp.Description("Create a GitHub webhook to trigger builds in response to pull-request and push events. Only works for pipelines and repositories configured with the Buildkite GitHub app"),
+				mcp.DefaultBool(true),
 			),
 			mcp.WithArray("tags",
 				mcp.Description("Tags to apply to the pipeline. These can be used for filtering and organization"),