feat: get_available_thinking_levels rpc (#6865)

packages/coding-agent/src/modes/rpc/rpc-client.ts

@@ -280,6 +280,14 @@ export class RpcClient {
 		return this.getData(response);
 	}
 
+	/**
+	 * Get list of available thinking levels for the current model.
+	 */
+	async getAvailableThinkingLevels(): Promise<ThinkingLevel[]> {
+		const response = await this.send({ type: "get_available_thinking_levels" });
+		return this.getData<{ levels: ThinkingLevel[] }>(response).levels;
+	}
+
 	/**
 	 * Set steering mode.
 	 */

packages/coding-agent/src/modes/rpc/rpc-mode.ts

@@ -504,6 +504,11 @@ export async function runRpcMode(runtimeHost: AgentSessionRuntime): Promise<neve
 				return success(id, "cycle_thinking_level", { level });
 			}
 
+			case "get_available_thinking_levels": {
+				const levels = session.getAvailableThinkingLevels();
+				return success(id, "get_available_thinking_levels", { levels });
+			}
+
 			// =================================================================
 			// Queue Modes
 			// =================================================================

packages/coding-agent/src/modes/rpc/rpc-types.ts

@@ -36,6 +36,7 @@ export type RpcCommand =
 	// Thinking
 	| { id?: string; type: "set_thinking_level"; level: ThinkingLevel }
 	| { id?: string; type: "cycle_thinking_level" }
+	| { id?: string; type: "get_available_thinking_levels" }
 
 	// Queue modes
 	| { id?: string; type: "set_steering_mode"; mode: "all" | "one-at-a-time" }
@@ -154,6 +155,13 @@ export type RpcResponse =
 			success: true;
 			data: { level: ThinkingLevel } | null;
 	  }
+	| {
+			id?: string;
+			type: "response";
+			command: "get_available_thinking_levels";
+			success: true;
+			data: { levels: ThinkingLevel[] };
+	  }
 
 	// Queue modes
 	| { id?: string; type: "response"; command: "set_steering_mode"; success: true }