feat: add zai coding plan byok (#1434)

src/cli/commands/connect-normalize.ts

@@ -9,6 +9,7 @@ export type ConnectProviderCanonical =
   | "anthropic"
   | "openai"
   | "zai"
+  | "zai-coding"
   | "minimax"
   | "gemini"
   | "openrouter"
@@ -20,6 +21,7 @@ const ALIAS_TO_CANONICAL: Record<string, ConnectProviderCanonical> = {
   anthropic: "anthropic",
   openai: "openai",
   zai: "zai",
+  "zai-coding": "zai-coding",
   minimax: "minimax",
   gemini: "gemini",
   openrouter: "openrouter",
@@ -31,6 +33,7 @@ const CANONICAL_ORDER: ConnectProviderCanonical[] = [
   "anthropic",
   "openai",
   "zai",
+  "zai-coding",
   "minimax",
   "gemini",
   "openrouter",
@@ -40,7 +43,8 @@ const CANONICAL_ORDER: ConnectProviderCanonical[] = [
 function canonicalToByokId(
   canonical: ConnectProviderCanonical,
 ): ByokProviderId {
-  return canonical === "chatgpt" ? "codex" : canonical;
+  if (canonical === "chatgpt") return "codex";
+  return canonical;
 }
 
 export interface ResolvedConnectProvider {
@@ -113,3 +117,9 @@ export function isConnectApiKeyProvider(
     !isConnectOAuthProvider(provider) && !isConnectBedrockProvider(provider)
   );
 }
+
+export function isConnectZaiBaseProvider(
+  provider: ResolvedConnectProvider,
+): boolean {
+  return provider.canonical === "zai";
+}

src/cli/commands/connect.ts

@@ -20,6 +20,7 @@ import {
   isConnectApiKeyProvider,
   isConnectBedrockProvider,
   isConnectOAuthProvider,
+  isConnectZaiBaseProvider,
   listConnectProvidersForHelp,
   listConnectProviderTokens,
   type ResolvedConnectProvider,
@@ -208,6 +209,18 @@ function formatApiKeyUsage(provider: ResolvedConnectProvider): string {
   ].join("\n");
 }
 
+function formatZaiCodingPlanPrompt(apiKey?: string): string {
+  const keyHint = apiKey ? ` ${apiKey}` : " <api_key>";
+  return [
+    "Connect to Z.ai",
+    "",
+    "Do you have a Z.ai Coding plan?",
+    "",
+    `  • Coding plan:  /connect zai-coding${keyHint}`,
+    `  • Regular API:  /connect zai${keyHint}`,
+  ].join("\n");
+}
+
 async function handleConnectChatGPT(
   ctx: ConnectCommandContext,
   msg: string,
@@ -501,13 +514,23 @@ export async function handleConnect(
   if (isConnectApiKeyProvider(provider)) {
     const apiKey = parts.slice(2).join("");
     if (!apiKey) {
-      addCommandResult(
-        ctx.buffersRef,
-        ctx.refreshDerived,
-        msg,
-        formatApiKeyUsage(provider),
-        false,
-      );
+      if (isConnectZaiBaseProvider(provider)) {
+        addCommandResult(
+          ctx.buffersRef,
+          ctx.refreshDerived,
+          msg,
+          formatZaiCodingPlanPrompt(),
+          false,
+        );
+      } else {
+        addCommandResult(
+          ctx.buffersRef,
+          ctx.refreshDerived,
+          msg,
+          formatApiKeyUsage(provider),
+          false,
+        );
+      }
       return;
     }
     await handleConnectApiKeyProvider(ctx, msg, provider, apiKey);

src/cli/subcommands/connect.ts

@@ -10,6 +10,7 @@ import {
   isConnectApiKeyProvider,
   isConnectBedrockProvider,
   isConnectOAuthProvider,
+  isConnectZaiBaseProvider,
   listConnectProvidersForHelp,
   listConnectProviderTokens,
   resolveConnectProvider,
@@ -261,6 +262,14 @@ export async function runConnectSubcommand(
   if (isConnectApiKeyProvider(provider)) {
     let apiKey =
       readStringOption(parsed.values["api-key"]) ?? restPositionals[0] ?? "";
+    if (!apiKey && isConnectZaiBaseProvider(provider)) {
+      io.stdout(
+        "Do you have a Z.ai Coding plan?\n" +
+          "  • Coding plan:  letta connect zai-coding [--api-key <key>]\n" +
+          "  • Regular API:  letta connect zai [--api-key <key>]",
+      );
+      return 0;
+    }
     if (!apiKey) {
       if (!io.isTTY()) {
         io.stderr(

src/providers/byok-providers.ts

@@ -50,10 +50,17 @@ export const BYOK_PROVIDERS = [
   {
     id: "zai",
     displayName: "zAI API",
-    description: "Connect a zAI key or coding plan",
+    description: "Connect a zAI API key",
     providerType: "zai",
     providerName: "lc-zai",
   },
+  {
+    id: "zai-coding",
+    displayName: "zAI Coding Plan",
+    description: "Connect a zAI Coding plan key",
+    providerType: "zai_coding",
+    providerName: "lc-zai-coding",
+  },
   {
     id: "minimax",
     displayName: "MiniMax API",