Add GLM Coding (China) provider with OpenAI-compatible API (#83)

open-sse/config/constants.js

@@ -104,6 +104,11 @@ export const PROVIDERS = {
       "Anthropic-Beta": "claude-code-20250219,interleaved-thinking-2025-05-14"
     }
   },
+  "glm-cn": {
+    baseUrl: "https://open.bigmodel.cn/api/coding/paas/v4/chat/completions",
+    format: "openai",
+    headers: {}
+  },
   kimi: {
     baseUrl: "https://api.kimi.com/coding/v1/messages",
     format: "claude",

open-sse/config/providerModels.js

@@ -131,6 +131,12 @@ export const PROVIDER_MODELS = {
     { id: "glm-4.7", name: "GLM 4.7" },
     { id: "glm-4.6v", name: "GLM 4.6V (Vision)" },
   ],
+  "glm-cn": [
+    { id: "glm-4.7", name: "GLM-4.7" },
+    { id: "glm-4.6", name: "GLM-4.6" },
+    { id: "glm-4.5", name: "GLM-4.5" },
+    { id: "glm-4.5-air", name: "GLM-4.5-Air" },
+  ],
   kimi: [
     { id: "kimi-k2.5", name: "Kimi K2.5" },
     { id: "kimi-k2.5-thinking", name: "Kimi K2.5 Thinking" },
@@ -188,6 +194,7 @@ export const PROVIDER_ID_TO_ALIAS = {
   gemini: "gemini",
   openrouter: "openrouter",
   glm: "glm",
+  "glm-cn": "glm-cn",
   kimi: "kimi",
   minimax: "minimax",
   "minimax-cn": "minimax",

src/app/api/providers/[id]/test/route.js

@@ -406,6 +406,24 @@ async function testApiKeyConnection(connection) {
         return { valid, error: valid ? null : "Invalid API key" };
       }
 
+      case "glm-cn": {
+        // GLM Coding (China) uses OpenAI-compatible API
+        const res = await fetch("https://open.bigmodel.cn/api/coding/paas/v4/chat/completions", {
+          method: "POST",
+          headers: {
+            "Authorization": `Bearer ${connection.apiKey}`,
+            "content-type": "application/json",
+          },
+          body: JSON.stringify({
+            model: "glm-4.7",
+            max_tokens: 1,
+            messages: [{ role: "user", content: "test" }],
+          }),
+        });
+        const valid = res.status !== 401 && res.status !== 403;
+        return { valid, error: valid ? null : "Invalid API key" };
+      }
+
       case "minimax":
       case "minimax-cn": {
         // MiniMax uses Claude-compatible API

src/app/api/providers/validate/route.js

@@ -99,29 +99,49 @@ export async function POST(request) {
           break;
 
         case "glm":
+        case "glm-cn":
         case "kimi":
         case "minimax":
         case "minimax-cn": {
           const claudeBaseUrls = {
             glm: "https://api.z.ai/api/anthropic/v1/messages",
+            "glm-cn": "https://open.bigmodel.cn/api/coding/paas/v4/chat/completions",
             kimi: "https://api.kimi.com/coding/v1/messages",
             minimax: "https://api.minimax.io/anthropic/v1/messages",
             "minimax-cn": "https://api.minimaxi.com/anthropic/v1/messages",
           };
-          const claudeRes = await fetch(claudeBaseUrls[provider], {
+
-            method: "POST",
+          // glm-cn uses OpenAI format
-            headers: {
+          if (provider === "glm-cn") {
-              "x-api-key": apiKey,
+            const glmCnRes = await fetch(claudeBaseUrls[provider], {
-              "anthropic-version": "2023-06-01",
+              method: "POST",
-              "content-type": "application/json",
+              headers: {
-            },
+                "Authorization": `Bearer ${apiKey}`,
-            body: JSON.stringify({
+                "content-type": "application/json",
-              model: "claude-sonnet-4-20250514",
+              },
-              max_tokens: 1,
+              body: JSON.stringify({
-              messages: [{ role: "user", content: "test" }],
+                model: "glm-4.7",
-            }),
+                max_tokens: 1,
-          });
+                messages: [{ role: "user", content: "test" }],
-          isValid = claudeRes.status !== 401;
+              }),
+            });
+            isValid = glmCnRes.status !== 401 && glmCnRes.status !== 403;
+          } else {
+            const claudeRes = await fetch(claudeBaseUrls[provider], {
+              method: "POST",
+              headers: {
+                "x-api-key": apiKey,
+                "anthropic-version": "2023-06-01",
+                "content-type": "application/json",
+              },
+              body: JSON.stringify({
+                model: "claude-sonnet-4-20250514",
+                max_tokens: 1,
+                messages: [{ role: "user", content: "test" }],
+              }),
+            });
+            isValid = claudeRes.status !== 401;
+          }
           break;
         }
 

src/shared/constants/config.js

@@ -33,6 +33,7 @@ export const API_ENDPOINTS = {
 export const PROVIDER_ENDPOINTS = {
   openrouter: "https://openrouter.ai/api/v1/chat/completions",
   glm: "https://api.z.ai/api/anthropic/v1/messages",
+  "glm-cn": "https://open.bigmodel.cn/api/coding/paas/v4/chat/completions",
   kimi: "https://api.kimi.com/coding/v1/messages",
   minimax: "https://api.minimax.io/anthropic/v1/messages",
   "minimax-cn": "https://api.minimaxi.com/anthropic/v1/messages",

src/shared/constants/providers.js

@@ -20,6 +20,7 @@ export const OAUTH_PROVIDERS = {
 export const APIKEY_PROVIDERS = {
   openrouter: { id: "openrouter", alias: "openrouter", name: "OpenRouter", icon: "router", color: "#6366F1", textIcon: "OR" , passthroughModels: true },
   glm: { id: "glm", alias: "glm", name: "GLM Coding", icon: "code", color: "#2563EB", textIcon: "GL" },
+  "glm-cn": { id: "glm-cn", alias: "glm-cn", name: "GLM Coding (China)", icon: "code", color: "#DC2626", textIcon: "GC" },
   kimi: { id: "kimi", alias: "kimi", name: "Kimi Coding", icon: "psychology", color: "#1E3A8A", textIcon: "KM" },
   minimax: { id: "minimax", alias: "minimax", name: "Minimax Coding", icon: "memory", color: "#7C3AED", textIcon: "MM" },
   "minimax-cn": { id: "minimax-cn", alias: "minimax-cn", name: "Minimax (China)", icon: "memory", color: "#DC2626", textIcon: "MC" },