diff --git a/server.js b/server.js
index cda208ba7..58f7b72bc 100644
--- a/server.js
+++ b/server.js
@@ -217,7 +217,7 @@ const AVATAR_WIDTH = 400;
 const AVATAR_HEIGHT = 600;
 const jsonParser = express.json({ limit: '200mb' });
 const urlencodedParser = express.urlencoded({ extended: true, limit: '200mb' });
-const { DIRECTORIES, UPLOADS_PATH, PALM_SAFETY, TEXTGEN_TYPES } = require('./src/constants');
+const { DIRECTORIES, UPLOADS_PATH, PALM_SAFETY, TEXTGEN_TYPES, CHAT_COMPLETION_SOURCES } = require('./src/constants');
 const { TavernCardValidator } = require('./src/validator/TavernCardValidator');
 
 // CSRF Protection //
@@ -2794,7 +2794,7 @@ app.post('/getstatus_openai', jsonParser, async function (request, response_gets
     let api_key_openai;
     let headers;
 
-    if (request.body.chat_completion_source !== 'openrouter') {
+    if (request.body.chat_completion_source !== CHAT_COMPLETION_SOURCES.OPENROUTER) {
         api_url = new URL(request.body.reverse_proxy || API_OPENAI).toString();
         api_key_openai = request.body.reverse_proxy ? request.body.proxy_password : readSecret(SECRET_KEYS.OPENAI);
         headers = {};
@@ -2822,7 +2822,7 @@ app.post('/getstatus_openai', jsonParser, async function (request, response_gets
             const data = await response.json();
             response_getstatus_openai.send(data);
 
-            if (request.body.chat_completion_source === 'openrouter' && Array.isArray(data?.data)) {
+            if (request.body.chat_completion_source === CHAT_COMPLETION_SOURCES.OPENROUTER && Array.isArray(data?.data)) {
                 let models = [];
 
                 data.data.forEach(model => {
@@ -3238,10 +3238,10 @@ app.post('/generate_openai', jsonParser, function (request, response_generate_op
     if (!request.body) return response_generate_openai.status(400).send({ error: true });
 
     switch (request.body.chat_completion_source) {
-        case 'claude': return sendClaudeRequest(request, response_generate_openai);
-        case 'scale': return sendScaleRequest(request, response_generate_openai);
-        case 'ai21': return sendAI21Request(request, response_generate_openai);
-        case 'palm': return sendPalmRequest(request, response_generate_openai);
+        case CHAT_COMPLETION_SOURCES.CLAUDE: return sendClaudeRequest(request, response_generate_openai);
+        case CHAT_COMPLETION_SOURCES.SCALE: return sendScaleRequest(request, response_generate_openai);
+        case CHAT_COMPLETION_SOURCES.AI21: return sendAI21Request(request, response_generate_openai);
+        case CHAT_COMPLETION_SOURCES.PALM: return sendPalmRequest(request, response_generate_openai);
     }
 
     let api_url;
@@ -3249,7 +3249,7 @@ app.post('/generate_openai', jsonParser, function (request, response_generate_op
     let headers;
     let bodyParams;
 
-    if (request.body.chat_completion_source !== 'openrouter') {
+    if (request.body.chat_completion_source !== CHAT_COMPLETION_SOURCES.OPENROUTER) {
         api_url = new URL(request.body.reverse_proxy || API_OPENAI).toString();
         api_key_openai = request.body.reverse_proxy ? request.body.proxy_password : readSecret(SECRET_KEYS.OPENAI);
         headers = {};
@@ -3281,7 +3281,7 @@ app.post('/generate_openai', jsonParser, function (request, response_generate_op
 
     const isTextCompletion = Boolean(request.body.model && TEXT_COMPLETION_MODELS.includes(request.body.model)) || typeof request.body.messages === 'string';
     const textPrompt = isTextCompletion ? convertChatMLPrompt(request.body.messages) : '';
-    const endpointUrl = isTextCompletion && request.body.chat_completion_source !== 'openrouter' ?
+    const endpointUrl = isTextCompletion && request.body.chat_completion_source !== CHAT_COMPLETION_SOURCES.OPENROUTER ?
         `${api_url}/completions` :
         `${api_url}/chat/completions`;
 
diff --git a/src/constants.js b/src/constants.js
index 978cc7c43..eac932d69 100644
--- a/src/constants.js
+++ b/src/constants.js
@@ -132,6 +132,16 @@ const PALM_SAFETY = [
     },
 ];
 
+const CHAT_COMPLETION_SOURCES = {
+    OPENAI: 'openai',
+    WINDOWAI: 'windowai',
+    CLAUDE: 'claude',
+    SCALE: 'scale',
+    OPENROUTER: 'openrouter',
+    AI21: 'ai21',
+    PALM: 'palm',
+};
+
 const UPLOADS_PATH = './uploads';
 
 // TODO: this is copied from the client code; there should be a way to de-duplicate it eventually
@@ -149,4 +159,5 @@ module.exports = {
     UPLOADS_PATH,
     PALM_SAFETY,
     TEXTGEN_TYPES,
+    CHAT_COMPLETION_SOURCES,
 };