fix: lazy-init Anthropic client across routes and libs

app/api/app-idea-chat/route.ts

@@ -10,7 +10,16 @@ import { getAnthropicModel } from '@/lib/anthropic-model'
 import { getCurrentUser } from '@/lib/auth'
 import { deductCredits, CREDITS } from '@/lib/credits'
 
-const anthropic = new Anthropic()
+let __anthropicClient: Anthropic | null = null
+function getAnthropic(): Anthropic {
+  if (__anthropicClient) return __anthropicClient
+  const key = process.env.ANTHROPIC_API_KEY
+  if (!key) {
+    throw new Error('ANTHROPIC_API_KEY is not configured')
+  }
+  __anthropicClient = new Anthropic({ apiKey: key })
+  return __anthropicClient
+}
 
 export interface AppIdeaSuggestion {
   name: string
@@ -141,7 +150,7 @@ Always respond with valid JSON only (no markdown fences):
       { role: 'user', content: message },
     ]
 
-    const response = await anthropic.messages.create({
+    const response = await getAnthropic().messages.create({
       model: getAnthropicModel(),
       max_tokens: 2048,
       system: systemPrompt,

app/api/build-app/route.ts

@@ -4,7 +4,16 @@ import { getCurrentUser } from '@/lib/auth'
 import { getAnthropicModel } from '@/lib/anthropic-model'
 import type { AppBlueprint } from '@/lib/queries'
 
-const anthropic = new Anthropic()
+let __anthropicClient: Anthropic | null = null
+function getAnthropic(): Anthropic {
+  if (__anthropicClient) return __anthropicClient
+  const key = process.env.ANTHROPIC_API_KEY
+  if (!key) {
+    throw new Error('ANTHROPIC_API_KEY is not configured')
+  }
+  __anthropicClient = new Anthropic({ apiKey: key })
+  return __anthropicClient
+}
 
 type Platform = 'github' | 'gitlab'
 
@@ -59,7 +68,7 @@ Rules:
 Return format: {"path/to/file.ts": "...full content...", "README.md": "..."}
 `
 
-  const response = await anthropic.messages.create({
+  const response = await getAnthropic().messages.create({
     model: getAnthropicModel(),
     max_tokens: 8192,
     messages: [{ role: 'user', content: prompt }],

app/api/pattern-analyzer/route.ts

@@ -10,7 +10,16 @@ import { getAnthropicModel } from '@/lib/anthropic-model'
 import { getCurrentUser } from '@/lib/auth'
 import { deductCredits, CREDITS } from '@/lib/credits'
 
-const anthropic = new Anthropic()
+let __anthropicClient: Anthropic | null = null
+function getAnthropic(): Anthropic {
+  if (__anthropicClient) return __anthropicClient
+  const key = process.env.ANTHROPIC_API_KEY
+  if (!key) {
+    throw new Error('ANTHROPIC_API_KEY is not configured')
+  }
+  __anthropicClient = new Anthropic({ apiKey: key })
+  return __anthropicClient
+}
 
 export interface ProjectSuggestion {
   name: string
@@ -154,7 +163,7 @@ Respond ONLY with a valid JSON object (no markdown fences) matching this exact s
   ]
 }`
 
-    const response = await anthropic.messages.create({
+    const response = await getAnthropic().messages.create({
       model: getAnthropicModel(),
       max_tokens: 4096,
       messages: [{ role: 'user', content: prompt }],

lib/app-discovery.ts

@@ -1,6 +1,15 @@
 import { Anthropic } from '@anthropic-ai/sdk'
 
-const anthropic = new Anthropic()
+let __anthropicClient: Anthropic | null = null
+function getAnthropic(): Anthropic {
+  if (__anthropicClient) return __anthropicClient
+  const key = process.env.ANTHROPIC_API_KEY
+  if (!key) {
+    throw new Error('ANTHROPIC_API_KEY is not configured')
+  }
+  __anthropicClient = new Anthropic({ apiKey: key })
+  return __anthropicClient
+}
 
 export interface DiscoveredApp {
   name: string
@@ -44,7 +53,7 @@ For each app, provide:
 
 Format as JSON array with objects containing these fields.`
 
-  const response = await anthropic.messages.create({
+  const response = await getAnthropic().messages.create({
     model: 'claude-3-5-sonnet-20241022',
     max_tokens: 8000,
     messages: [

lib/code-completion.ts

@@ -1,6 +1,15 @@
 import { Anthropic } from '@anthropic-ai/sdk'
 
-const anthropic = new Anthropic()
+let __anthropicClient: Anthropic | null = null
+function getAnthropic(): Anthropic {
+  if (__anthropicClient) return __anthropicClient
+  const key = process.env.ANTHROPIC_API_KEY
+  if (!key) {
+    throw new Error('ANTHROPIC_API_KEY is not configured')
+  }
+  __anthropicClient = new Anthropic({ apiKey: key })
+  return __anthropicClient
+}
 
 /**
  * Represents a code snippet with semantic metadata
@@ -61,7 +70,7 @@ Extract and return JSON with:
 Return ONLY valid JSON, no markdown formatting.`
 
   try {
-    const response = await anthropic.messages.create({
+    const response = await getAnthropic().messages.create({
       model: 'claude-3-5-sonnet-20241022',
       max_tokens: 2000,
       messages: [{ role: 'user', content: prompt }],
@@ -261,7 +270,7 @@ Complete the code:
 \`\`\`${language}`
 
   try {
-    const response = await anthropic.messages.create({
+    const response = await getAnthropic().messages.create({
       model: 'claude-3-5-sonnet-20241022',
       max_tokens: 4000,
       messages: [{ role: 'user', content: prompt }],

lib/cross-platform-scanner.ts

@@ -1,7 +1,16 @@
 import { cookies } from 'next/headers'
 import { Anthropic } from '@anthropic-ai/sdk'
 
-const anthropic = new Anthropic()
+let __anthropicClient: Anthropic | null = null
+function getAnthropic(): Anthropic {
+  if (__anthropicClient) return __anthropicClient
+  const key = process.env.ANTHROPIC_API_KEY
+  if (!key) {
+    throw new Error('ANTHROPIC_API_KEY is not configured')
+  }
+  __anthropicClient = new Anthropic({ apiKey: key })
+  return __anthropicClient
+}
 
 interface ScannedFile {
   path: string
@@ -55,7 +64,7 @@ For each file, provide:
 - Reusability score
 - Can this be combined with other files to build apps?`
 
-  const response = await anthropic.messages.create({
+  const response = await getAnthropic().messages.create({
     model: 'claude-3-5-sonnet-20241022',
     max_tokens: 4000,
     messages: [