PatternsReal-world Examples

Chat-Base Clone

A comprehensive Chatbase clone demo with widget interface, model selection, web search integration, and human-in-the-loop tool approval workflows.

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Problems solved

Technical challenges this implementation handles out of the box.

Products and workflows this pattern is designed to support.

Requirements, wiring steps, and what this pattern adds to your project.

Pick how you want to pull this pattern in — then wire env vars and routes the same way.

1
Install from the preview toolbar
Copy the install command above and run it in your project — Pro patterns include a short-lived token.
2
Add environment variables to .env.local
OPENAI_API_KEY, PERPLEXITY_API_KEY, UPSTASH_REDIS_REST_URL, UPSTASH_REDIS_REST_TOKEN
3
Point client fetches at your API routes
Replace preview `/view/.../api/...` paths with `/api/...` in the installed files.
4
Customize the agent and tool files
Adapt prompts, tools, and stop conditions for your product — Copy for AI in the toolbar helps seed that work.
5
Run your dev server and open the pattern route
Install dependencies if needed, then start the app and verify responses.

AI SDK APIs

streamTextconvertToModelMessagesuseChatgatewaytooltoUIMessageStreamResponse

Providers

OpenAIPerplexity

External services

Upstash

5 files

7 total

npm packages

AISDKlucide-reactNext.jsReactsonnerZod

Registry components

button

chat-base-clone/route.ts
API route demonstrating multi-model routing via gateway(), streamText with convertToModelMessages, and toUIMessageStreamResponse with sendSources/sendReasoning.
lib/tools.ts
Human-in-the-loop tool definitions. Tools WITHOUT execute functions require human approval. Tools WITH execute functions run automatically. Core HIL pattern.
lib/utils.ts
Server-side HIL execution engine. Contains processToolCalls() which checks for APPROVAL.YES/NO, executes approved tools, streams results. Also getToolsRequiringConfirmation(). Most critical file for the human-in-the-loop pattern.