@@ -184,16 +184,16 @@ export const statuslineHookJsonSchema = v.object({
 			total_input_tokens: v.number(),
 			total_output_tokens: v.optional(v.number()),
 			context_window_size: v.number(),
-			current_usage: v.optional(
+			current_usage: v.nullable(
 				v.object({
 					input_tokens: v.number(),
 					output_tokens: v.number(),
 					cache_creation_input_tokens: v.number(),
 					cache_read_input_tokens: v.number(),
 				}),
 			),
-			used_percentage: v.optional(v.number()),
-			remaining_percentage: v.optional(v.number()),
+			used_percentage: v.nullable(v.number()),
+			remaining_percentage: v.nullable(v.number()),
 		}),
 	),
 });
 
@@ -501,6 +501,10 @@ export const statuslineCommand = define({
 						),
 						Result.map((contextResult) => {
 							if (contextResult == null) {
+								// If transcript calculation failed but we have context_window_size, show 0 tokens
+								if (hookData.context_window?.context_window_size != null) {
+									return formatContextInfo(0, hookData.context_window.context_window_size);
+								}
 								return undefined;
 							}
 							return formatContextInfo(contextResult.inputTokens, contextResult.contextLimit);