feat: add basic openrouter client

src/openrouter/index.ts

@@ -0,0 +1,61 @@
+import { config } from "@/config";
+import { OpenRouter } from "@openrouter/sdk";
+import type { ChatRequestEffort } from "@openrouter/sdk/models";
+
+const CONVERSATION_MODEL = "x-ai/grok-4.3" as const;
+const IDENTITY_MODEL = "openai/gpt-5.4-mini" as const;
+type MODELS = typeof CONVERSATION_MODEL | typeof IDENTITY_MODEL;
+
+interface StructuredOptions {
+  instruction: string;
+  message: string;
+  reasoningEffort: ChatRequestEffort;
+  jsonSchemaName: string;
+  jsonSchema:
+    | {
+        [k: string]: any;
+      }
+    | undefined;
+}
+
+export class LLMExecutor {
+  private apiKey: string;
+  client: OpenRouter;
+
+  constructor(apiKey: string) {
+    this.apiKey = apiKey;
+    this.client = new OpenRouter({ apiKey: this.apiKey, appTitle: "boxbrain" });
+  }
+
+  private structuredCall<T>(model: MODELS, options: StructuredOptions) {
+    this.client.chat.send({
+      chatRequest: {
+        model,
+        messages: [
+          {
+            role: "system",
+            content: options.instruction,
+          },
+          {
+            role: "user",
+            content: options.message,
+          },
+        ],
+        reasoning: {
+          effort: options.reasoningEffort,
+        },
+        responseFormat: {
+          type: "json_schema",
+          jsonSchema: {
+            name: options.jsonSchemaName,
+            schema: options.jsonSchema,
+            strict: true,
+          },
+        },
+        stream: false,
+      },
+    });
+  }
+}
+
+export const llm = new LLMExecutor(config.openrouterApiKey);