diff --git a/src/config/types.agents.ts b/src/config/types.agents.ts
index 14a8b487956..0f82511c4d8 100644
--- a/src/config/types.agents.ts
+++ b/src/config/types.agents.ts
@@ -67,6 +67,8 @@ export type AgentConfig = {
   model?: AgentModelConfig;
   /** Optional per-agent default thinking level (overrides agents.defaults.thinkingDefault). */
   thinkingDefault?: "off" | "minimal" | "low" | "medium" | "high" | "xhigh" | "adaptive";
+  /** Optional per-agent default verbosity level. */
+  verboseDefault?: "off" | "on" | "full";
   /** Optional per-agent default reasoning visibility. */
   reasoningDefault?: "on" | "off" | "stream";
   /** Optional per-agent default for fast mode. */