diff --git a/src/types/pi-coding-agent.d.ts b/src/types/pi-coding-agent.d.ts
index b455056e60..31cb0f7ef6 100644
--- a/src/types/pi-coding-agent.d.ts
+++ b/src/types/pi-coding-agent.d.ts
@@ -4,5 +4,11 @@ declare module "@mariozechner/pi-coding-agent" {
   interface CreateAgentSessionOptions {
     /** Extra extension paths merged with settings-based discovery. */
     additionalExtensionPaths?: string[];
+    /** Override the default system prompt. */
+    systemPrompt?: (defaultPrompt?: string) => string;
+    /** Pre-loaded skills. */
+    skills?: Skill[];
+    /** Pre-loaded context files. */
+    contextFiles?: Array<{ path: string; content: string }>;
   }
 }