PatternsSDK API

Streaming Structured Output

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Problems solved

Technical challenges this implementation handles out of the box.
  • Stream structured objects with streamObject
  • Validate progressive JSON against a Zod schema
  • Render partial structured output as it arrives

Use cases

Products and workflows this pattern is designed to support.
  • Streaming form-fill prototypes
  • Live structured extraction demos
  • AI SDK streamObject onboarding samples
  • Progressive JSON generation UIs

Setup

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

Getting started

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

  1. 1

    Install from the preview toolbar

    Shadcn Icon

    Copy the install command above and run it in your project — Pro patterns include a short-lived token.

  2. 2

    Add environment variables to .env.local

    OPENAI_API_KEY

  3. 3

    Point client fetches at your API routes

    Replace preview `/view/.../api/...` paths with `/api/...` in the installed files.

  4. 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. 5

    Run your dev server and open the pattern route

    Install dependencies if needed, then start the app and verify responses.

Environment variables

Capabilities

AI SDK APIs

streamTextOutput.objectuseObject

Providers

OpenAI

Files added

5 files
  • app/page.tsx
  • app/layout.tsx
  • components/basic-stream-object-form.tsx
  • app/api/stream-object/route.ts
  • app/api/stream-object/schema.ts

Dependencies

11 total

npm packages

5
AISDKlucide-reactNext.jsReactZod

Shadcn IconRegistry components

6
input-groupseparatoremptyitemalertscroll-area

Critical files

  • stream-object/route.ts

    API route demonstrating AI SDK streamText with Output.object for structured object streaming. Uses a Zod schema to validate streamed output and toTextStreamResponse().

  • stream-object/schema.ts

    Zod schema defining the structured output shape used by the stream-object route for validated AI output.

Requirements

Complexity
Beginner