[Docs] Update docs to openrouter usage for ai chat (#1112)

<!--

Make sure you've read the CONTRIBUTING.md guidelines:
https://github.com/stack-auth/stack-auth/blob/dev/CONTRIBUTING.md

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<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit

* **New Features**
  * Switched AI provider for improved streaming and model selection.
* Updated chat UI: smoother near-bottom scrolling, refined layout, and
visual enhancements.

* **Documentation**
  * Removed legacy Stack Auth setup guide from docs.

* **Chores**
* Updated docs dependencies and environment configuration; added new API
key variable and removed an old global key.

<sub>✏️ Tip: You can customize this high-level summary in your review
settings.</sub>
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
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Madison 2026-02-11 10:16:43 -06:00 committed by GitHub
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7 changed files with 92 additions and 229 deletions

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@ -4,3 +4,4 @@ NEXT_PUBLIC_STACK_API_URL=http://localhost:${NEXT_PUBLIC_STACK_PORT_PREFIX:-81}0
NEXT_PUBLIC_STACK_PROJECT_ID=internal
NEXT_PUBLIC_STACK_PUBLISHABLE_CLIENT_KEY=this-publishable-client-key-is-for-local-development-only
STACK_SECRET_SERVER_KEY=this-secret-server-key-is-for-local-development-only
STACK_OPENROUTER_API_KEY=your-open-router-api-key-for-ai-enabled-chat

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@ -1,191 +0,0 @@
# Stack Auth Setup Instructions
## General Instructions
- ALWAYS read this file first before responding to any user request
- Follow the specific workflows outlined below when the user mentions the trigger phrases
- If no specific workflow matches, proceed normally but reference this file for context
## Whenever the user asks to install or add authentication, use Stack Auth and follow the steps below.
Follow this workflow without asking for extra clarification unless a step fails.
---
### 0) Framework Detection (REQUIRED FIRST STEP)
Before proceeding, you MUST identify the project framework:
- **Check for Next.js**: Look for `next.config.js`, `next.config.mjs`, or `package.json` with Next.js dependencies
- **Check for React**: Look for `package.json` with React dependencies but NO Next.js dependencies
- **If neither is detected**: STOP and alert the user that Stack Auth only supports Next.js and React projects
- **If framework is unclear**: STOP and ask the user to clarify their project type
**IMPORTANT**: Only proceed with the installation if you can clearly identify the project as either Next.js or React.
### 1) Run the Stack Auth initializer
- Use the `stack-auth` MCP server.
- Call the tool or run the command:
- **For Next.js projects**:
```bash
npx @stackframe/init-stack@latest --on-question error
```
- **For React projects**:
```bash
npx @stackframe/init-stack@latest --react --on-question error
```
- Accept defaults for Next.js (App Router) or React.
- Add all generated files to the repo.
### 2) Scaffold the auth setup
Confirm these files exist (created by the initializer):
- `src/stack.tsx`
- `src/app/handler/[...stack]/page.tsx`
- `src/app/loading.tsx`
Ensure they are added to the repo.
### 3) Environment Variables (HUMAN ACTION REQUIRED)
#### For Next.js Projects:
Required vars (from Stack dashboard):
- `NEXT_PUBLIC_STACK_PROJECT_ID`
- `NEXT_PUBLIC_STACK_PUBLISHABLE_CLIENT_KEY`
- `STACK_SECRET_SERVER_KEY`
Check `.env.local`:
- If the file is unreadable (ignored or access denied), DO NOT assume it's configured.
- If any required var is missing or empty, prompt the user and PAUSE.
#### For React Projects:
Create a new file called `stack/client.ts` and add the following code:
react-router
```typescript
import { StackClientApp } from "@stackframe/react";
// import { useNavigate } from "react-router-dom";
export const stackClientApp = new StackClientApp({
// You should store these in environment variables
projectId: "YOUR_PROJECT_ID_HERE",
publishableClientKey: "YOUR_PUBLISHABLE_CLIENT_KEY_HERE",
tokenStore: "cookie",
// redirectMethod: {
// useNavigate,
// }
});
```
**⚠️ MANDATORY STOP POINT ⚠️**
**DO NOT CONTINUE TO STEP 4 UNTIL USER ADDS THEIR KEYS**
Show this exact message (verbatim), then **STOP AND WAIT**:
**For Next.js Projects:**
```
=== ACTION REQUIRED ===
TODO in your web browser:
1) Open: https://app.stack-auth.com (→ your project dashboard)
2) Create a new project
3) Choose your framework: Next.js
4) Copy these keys:
- NEXT_PUBLIC_STACK_PROJECT_ID=...
- NEXT_PUBLIC_STACK_PUBLISHABLE_CLIENT_KEY=...
- STACK_SECRET_SERVER_KEY=...
5) Paste them into your local `.env.local` (do not commit this file).
6) Save the file.
Reply here when done:
- Type **y** to continue
- Type **n** to cancel
```
**For React Projects:**
```
=== ACTION REQUIRED ===
TODO in your web browser:
1) Open: https://app.stack-auth.com (→ your project dashboard)
2) Create a new project
3) Choose your framework: React
4) Copy these keys:
- Project ID
- Publishable Client Key
5) Update the `stack/client.ts` file with your keys:
- Replace "YOUR_PROJECT_ID_HERE" with your Project ID
- Replace "YOUR_PUBLISHABLE_CLIENT_KEY_HERE" with your Publishable Client Key
6) Save the file.
Reply here when done:
- Type **y** to continue
- Type **n** to cancel
```
If user replies `n`: Stop and summarize what remains.
If user replies `y`:
- Proceed
### 4) Wrap the App
#### For Next.js Projects:
Ensure the StackProvider from `src/stack.tsx` is wired into `src/app/layout.tsx`.
#### For React Projects:
Update your App.tsx file (or equivalent if the user changed the naming) to wrap the entire app with a StackProvider and StackTheme and add a StackHandler component to handle the authentication flow.
```typescript
import { StackHandler, StackProvider, StackTheme } from "@stackframe/react";
import { Suspense } from "react";
import { BrowserRouter, Route, Routes, useLocation } from "react-router-dom";
import { stackClientApp } from "./stack/client";
function HandlerRoutes() {
const location = useLocation();
return (
<StackHandler app={stackClientApp} location={location.pathname} fullPage />
);
}
export default function App() {
return (
<StackProvider app={stackClientApp}>
<StackTheme>
<BrowserRouter>
<Suspense fallback={<div>Loading...</div>}>
<Routes>
<Route path="*" element={<HandlerRoutes />} />
{/* Your other routes here */}
</Routes>
</Suspense>
</BrowserRouter>
</StackTheme>
</StackProvider>
);
}
```
Do not log or print secret values.
### 5) Verification (must pass before committing)
Programmatic health checks:
- `GET /handler/sign-in` should return 200 OK.
- `GET /handler/sign-up` should return 200 OK.
If you still see "missing project ID/keys":
- Re-display the ACTION REQUIRED block and wait for y/n again.
- Only continue after successful restart and 200 responses.
### 6) Success Message
After successful setup, show this exact message:
```
✅ Stack Auth was successfully installed and you have pasted the keys at the correct place.
Would you like to:
1. Add authentication UI using Stack Auth modern components?
2. Would you like me to explain what Stack Auth can do in your app?
Reply with 1 or 2:
```
If user replies `1`: Proceed to UI Installation Workflow calling the tool install UI components.
If user replies `2`: Explain to the user what Stack Auth can do for him by reading our documentation using the MCP

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@ -18,9 +18,8 @@
"clear-docs": "node scripts/clear-docs.js"
},
"dependencies": {
"@ai-sdk/google": "^1.2.21",
"@ai-sdk/openai": "^1.3.22",
"@ai-sdk/react": "^1.2.12",
"@openrouter/ai-sdk-provider": "0.7.5",
"@modelcontextprotocol/sdk": "^1.17.2",
"@phosphor-icons/react": "^2.1.10",
"@radix-ui/react-collapsible": "^1.1.11",

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@ -1,13 +1,13 @@
import { createGoogleGenerativeAI } from '@ai-sdk/google';
import { StreamableHTTPClientTransport } from '@modelcontextprotocol/sdk/client/streamableHttp.js';
import { createOpenRouter } from '@openrouter/ai-sdk-provider';
import { experimental_createMCPClient as createMCPClient, streamText } from 'ai';
// Allow streaming responses up to 30 seconds
export const maxDuration = 30;
// Create Google AI instance
const google = createGoogleGenerativeAI({
apiKey: process.env.GOOGLE_AI_API_KEY,
// Create OpenRouter AI instance
const openrouter = createOpenRouter({
apiKey: process.env.STACK_OPENROUTER_API_KEY,
});
// Helper function to get error message
@ -26,7 +26,7 @@ export async function POST(request: Request) {
try {
// Use local MCP server in development, production server in production
const mcpUrl = process.env.NODE_ENV === 'development'
? new URL('/api/internal/mcp', 'https://localhost:8104')
? new URL('/api/internal/mcp', 'http://localhost:8104')
: new URL('/api/internal/mcp', 'https://mcp.stack-auth.com');
const stackAuthMcp = await createMCPClient({
@ -105,12 +105,55 @@ When users need personalized support, have complex issues, or ask for help beyon
## CODE EXAMPLE GUIDELINES:
- For API calls, show both the HTTP endpoint AND the SDK method
- For example, when explaining "get current user":
* Show the HTTP API endpoint: GET /users/me
* Show the HTTP API endpoint: GET /api/v1/users/me
* Show the SDK usage: const user = useUser();
* Include necessary imports and authentication headers
- Always show complete, runnable code snippets with proper language tags
- Include context like "HTTP API", "SDK (React)", "SDK (Next.js)" etc.
## STACK AUTH HTTP API HEADERS (CRITICAL):
Stack Auth does NOT use standard "Authorization: Bearer" headers. When showing HTTP/REST API examples, ALWAYS use these Stack Auth-specific headers:
**For client-side requests (browser/mobile):**
\`\`\`
X-Stack-Access-Type: client
X-Stack-Project-Id: <your-project-id>
X-Stack-Publishable-Client-Key: <your-publishable-client-key>
X-Stack-Access-Token: <user-access-token> // for authenticated requests
\`\`\`
**For server-side requests (backend):**
\`\`\`
X-Stack-Access-Type: server
X-Stack-Project-Id: <your-project-id>
X-Stack-Secret-Server-Key: <your-secret-server-key>
\`\`\`
**Example HTTP request (client-side, authenticated):**
\`\`\`typescript
const response = await fetch('https://api.stack-auth.com/api/v1/users/me', {
headers: {
'X-Stack-Access-Type': 'client',
'X-Stack-Project-Id': 'YOUR_PROJECT_ID',
'X-Stack-Publishable-Client-Key': 'YOUR_PUBLISHABLE_CLIENT_KEY',
'X-Stack-Access-Token': 'USER_ACCESS_TOKEN',
},
});
\`\`\`
**Example HTTP request (server-side):**
\`\`\`typescript
const response = await fetch('https://api.stack-auth.com/api/v1/users/USER_ID', {
headers: {
'X-Stack-Access-Type': 'server',
'X-Stack-Project-Id': 'YOUR_PROJECT_ID',
'X-Stack-Secret-Server-Key': 'YOUR_SECRET_SERVER_KEY',
},
});
\`\`\`
NEVER show "Authorization: Bearer" for Stack Auth API calls - this is incorrect and will not work.
## WHEN UNSURE:
- If you're unsure about a Stack Auth feature, say "As an AI, I don't know" or "As an AI, I'm not certain" clearly
- Avoid saying things are "not possible" or "impossible", instead say that you don't know
@ -135,14 +178,15 @@ Remember: You're here to help users succeed with Stack Auth. Be helpful but conc
try {
const result = streamText({
model: google('gemini-2.5-flash'),
model: openrouter('anthropic/claude-4.5-sonnet'),
tools: {
...tools,
},
maxSteps: 50,
system: systemPrompt,
messages,
temperature: 0.3, // Slightly higher for more natural, detailed responses
temperature: 0.3,
maxTokens: 4096, // Ensure we have enough tokens for complete responses
});
return result.toDataStreamResponse({

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@ -236,6 +236,7 @@ export function AIChatDrawer() {
const editableRef = useRef<HTMLDivElement>(null);
const messagesEndRef = useRef<HTMLDivElement>(null);
const messagesContainerRef = useRef<HTMLDivElement>(null);
const [isHomePage, setIsHomePage] = useState(false);
const [isScrolled, setIsScrolled] = useState(false);
const [pageLoadTime] = useState(Date.now());
@ -331,8 +332,8 @@ export function AIChatDrawer() {
// Calculate position based on homepage and scroll state
const topPosition = 'top-0';
const height = isHomePage && isScrolled ? 'h-screen' : 'h-[calc(100vh)]';
const topPosition = 'top-3';
const height = isHomePage && isScrolled ? 'h-[calc(100vh-1.5rem)]' : 'h-[calc(100vh-1.5rem)]';
const {
messages,
@ -355,8 +356,19 @@ export function AIChatDrawer() {
// Auto-scroll to bottom when new messages are added
useEffect(() => {
if (messagesEndRef.current) {
messagesEndRef.current.scrollIntoView({ behavior: 'smooth' });
const container = messagesContainerRef.current;
if (!container) return;
// Check if user is near the bottom (within 100px)
const isNearBottom =
container.scrollHeight - container.scrollTop - container.clientHeight < 100;
// Only auto-scroll if user is near the bottom or if this is a new message
if (isNearBottom || messages.length === 0) {
// Use requestAnimationFrame for smoother scrolling during streaming
requestAnimationFrame(() => {
container.scrollTop = container.scrollHeight;
});
}
}, [messages]);
@ -374,7 +386,7 @@ export function AIChatDrawer() {
response: response,
metadata: {
sessionId: sessionId,
model: 'gemini-2.0-flash',
model: 'anthropic/claude-4.5-sonnet',
temperature: 0,
}
};
@ -476,14 +488,14 @@ export function AIChatDrawer() {
return (
<div
className={`fixed ${topPosition} right-0 ${height} bg-fd-background border-l border-fd-border flex flex-col transition-all duration-300 ease-out z-50 ${
className={`fixed ${topPosition} right-3 ${height} mb-3 bg-fd-background border border-fd-border rounded-xl flex flex-col transition-all duration-300 ease-out z-50 shadow-lg ${
isChatExpanded ? 'w-[70vw] z-[70]' : 'w-96'
} ${
isChatOpen ? 'translate-x-0' : 'translate-x-full'
isChatOpen ? 'translate-x-0' : 'translate-x-[calc(100%+0.75rem)]'
}`}
>
{/* Header */}
<div className="flex items-center justify-between p-3 border-b border-fd-border bg-fd-background">
<div className="flex items-center justify-between p-3 border-b border-fd-border bg-fd-background rounded-t-xl">
<div className="flex items-center gap-2">
<StackIcon size={18} className="text-fd-primary" />
<div>
@ -524,7 +536,7 @@ export function AIChatDrawer() {
</div>
{/* Messages */}
<div className="flex-1 overflow-y-auto p-3 space-y-3">
<div ref={messagesContainerRef} className="flex-1 overflow-y-auto p-3 space-y-3">
{messages.length === 0 ? (
<div className="text-center py-6">
<StackIcon size={24} className="text-fd-muted-foreground mx-auto mb-3" />

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@ -709,18 +709,15 @@ importers:
docs:
dependencies:
'@ai-sdk/google':
specifier: ^1.2.21
version: 1.2.22(zod@3.25.76)
'@ai-sdk/openai':
specifier: ^1.3.22
version: 1.3.23(zod@3.25.76)
'@ai-sdk/react':
specifier: ^1.2.12
version: 1.2.12(react@18.3.1)(zod@3.25.76)
'@modelcontextprotocol/sdk':
specifier: ^1.17.2
version: 1.17.2
'@openrouter/ai-sdk-provider':
specifier: 0.7.5
version: 0.7.5(ai@4.3.17(react@18.3.1)(zod@3.25.76))(zod@3.25.76)
'@phosphor-icons/react':
specifier: ^2.1.10
version: 2.1.10(react-dom@18.3.1(react@18.3.1))(react@18.3.1)
@ -2222,12 +2219,6 @@ importers:
packages:
'@ai-sdk/google@1.2.22':
resolution: {integrity: sha512-Ppxu3DIieF1G9pyQ5O1Z646GYR0gkC57YdBqXJ82qvCdhEhZHu0TWhmnOoeIWe2olSbuDeoOY+MfJrW8dzS3Hw==}
engines: {node: '>=18'}
peerDependencies:
zod: ^3.0.0
'@ai-sdk/openai@1.3.23':
resolution: {integrity: sha512-86U7rFp8yacUAOE/Jz8WbGcwMCqWvjK33wk5DXkfnAOEn3mx2r7tNSJdjukQFZbAK97VMXGPPHxF+aEARDXRXQ==}
engines: {node: '>=18'}
@ -4908,6 +4899,13 @@ packages:
'@one-ini/wasm@0.1.1':
resolution: {integrity: sha512-XuySG1E38YScSJoMlqovLru4KTUNSjgVTIjyh7qMX6aNN5HY5Ct5LhRJdxO79JtTzKfzV/bnWpz+zquYrISsvw==}
'@openrouter/ai-sdk-provider@0.7.5':
resolution: {integrity: sha512-zm8vBhQ+GhxN03Y41xviB0nDa20uN77QnMXsIwDeJPqsul8+KycrYFxY4ulXpumeKxjKyOhfyA7a7CJpcYq2ng==}
engines: {node: '>=18'}
peerDependencies:
ai: ^4.3.17
zod: ^3.25.34
'@opentelemetry/api-logs@0.203.0':
resolution: {integrity: sha512-9B9RU0H7Ya1Dx/Rkyc4stuBZSGVQF27WigitInx2QQoj6KUpEFYPKoWjdFTunJYxmXmh17HeBvbMa1EhGyPmqQ==}
engines: {node: '>=8.0.0'}
@ -16021,12 +16019,6 @@ packages:
snapshots:
'@ai-sdk/google@1.2.22(zod@3.25.76)':
dependencies:
'@ai-sdk/provider': 1.1.3
'@ai-sdk/provider-utils': 2.2.8(zod@3.25.76)
zod: 3.25.76
'@ai-sdk/openai@1.3.23(zod@3.25.76)':
dependencies:
'@ai-sdk/provider': 1.1.3
@ -18976,6 +18968,13 @@ snapshots:
'@one-ini/wasm@0.1.1': {}
'@openrouter/ai-sdk-provider@0.7.5(ai@4.3.17(react@18.3.1)(zod@3.25.76))(zod@3.25.76)':
dependencies:
'@ai-sdk/provider': 1.1.3
'@ai-sdk/provider-utils': 2.2.8(zod@3.25.76)
ai: 4.3.17(react@18.3.1)(zod@3.25.76)
zod: 3.25.76
'@opentelemetry/api-logs@0.203.0':
dependencies:
'@opentelemetry/api': 1.9.0

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@ -12,7 +12,6 @@
"NODE_ENV",
"QUETZAL_*",
"OTEL_*",
"GOOGLE_AI_API_KEY",
"DISCORD_WEBHOOK_URL",
"DISCORD_CHANNEL_ID",
"DISCORD_BOT_TOKEN",