HIL Needs Approval

Demonstrate tool approval with async generators. Includes real-time feedback, approval workflows, and interactive management.

Loading preview…

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
GOOGLE_AI_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

AgenttoolstepCountIsExperimental_AgentgatewayUIToolInvocation

Providers

Gemini

External services

Upstash

11 files

8 total

npm packages

AISDKlucide-reactNext.jsReactsonnerZod

Registry components

buttonempty

lib/tool-approval-agent.ts
Agent definition using Experimental_Agent with tool approval pattern. Configures instructions to handle approval denial gracefully.
tools/weather-tool.ts
Weather tool with needsApproval: true — the key pattern for human-in-the-loop tool approval. Uses generator pattern with yield for loading/ready states.