Allow configuring OpenAI base URL

.env.example

@@ -9,6 +9,8 @@ JWT_REFRESH_SECRET=changeme
 # OpenAI
 OPENAI_API_KEY=sk-your-openai-key
 OPENAI_PROJECT=
+OPENAI_BASE_URL=
+# Optional: specify a custom API endpoint, e.g. http://localhost:1234/v1
 LLM_MODEL=gpt-5-nano
 TTS_MODEL=tts-1
 VOICE_ID=alloy

nuxt.config.ts

@@ -16,6 +16,7 @@ export default defineNuxtConfig({
     runtimeConfig: {
         openaiKey: process.env.OPENAI_API_KEY,
         openaiProject: process.env.OPENAI_PROJECT,
+        openaiBaseUrl: process.env.OPENAI_BASE_URL,
         llmModel: process.env.LLM_MODEL || 'gpt-5-nano',
         ttsModel: process.env.TTS_MODEL || 'tts-1',
         defaultVoiceId: process.env.VOICE_ID || 'alloy',

server/utils/normalize.ts

@@ -4,11 +4,14 @@ import fs from "node:fs";
 import { normalizeRadioPhrase } from "../../shared/utils/radioSpeech";
 import { getServerRuntimeConfig } from "./runtimeConfig";
 
-const { openaiKey, openaiProject, llmModel, ttsModel } = getServerRuntimeConfig();
+const { openaiKey, openaiProject, openaiBaseUrl, llmModel, ttsModel } = getServerRuntimeConfig();
 const normalizeClientOptions: ConstructorParameters<typeof OpenAI>[0] = { apiKey: openaiKey };
 if (openaiProject) {
     normalizeClientOptions.project = openaiProject;
 }
+if (openaiBaseUrl) {
+    normalizeClientOptions.baseURL = openaiBaseUrl;
+}
 
 export const normalize = new OpenAI(normalizeClientOptions);
 

server/utils/openai.ts

@@ -28,7 +28,7 @@ const httpsAgent = new https.Agent({
 
 function ensureOpenAI(): OpenAI {
     if (!openaiClient) {
-        const {openaiKey, openaiProject, llmModel} = getServerRuntimeConfig()
+        const {openaiKey, openaiProject, openaiBaseUrl, llmModel} = getServerRuntimeConfig()
         if (!openaiKey) {
             throw new Error('OPENAI_API_KEY is missing. Please set the key before using AI features.')
         }
@@ -39,6 +39,9 @@ function ensureOpenAI(): OpenAI {
         if (openaiProject) {
             clientOptions.project = openaiProject
         }
+        if (openaiBaseUrl) {
+            clientOptions.baseURL = openaiBaseUrl
+        }
         console.log("using connection opened client")
         openaiClient = new OpenAI(clientOptions)
         cachedModel = llmModel

server/utils/runtimeConfig.ts

@@ -3,6 +3,7 @@ import { useRuntimeConfig } from '#imports'
 export interface ServerRuntimeConfig {
   openaiKey: string
   openaiProject?: string
+  openaiBaseUrl?: string
   llmModel: string
   ttsModel: string
   voiceId: string
@@ -62,9 +63,13 @@ export function getServerRuntimeConfig(): ServerRuntimeConfig {
     warnedMissingOpenAIKey = true
   }
 
+  const openaiProject = String(runtimeConfig.openaiProject || '').trim() || undefined
+  const openaiBaseUrl = String(runtimeConfig.openaiBaseUrl || '').trim() || undefined
+
   const config: ServerRuntimeConfig = {
     openaiKey,
-    openaiProject: String(runtimeConfig.openaiProject || '').trim() || undefined,
+    openaiProject,
+    openaiBaseUrl,
     llmModel: String(runtimeConfig.llmModel || '').trim() || 'gpt-5-nano',
     ttsModel: String(runtimeConfig.ttsModel || '').trim() || 'tts-1',
     voiceId: String(runtimeConfig.defaultVoiceId || '').trim() || 'alloy',