Function Calling Schema Builder

Visually define tool schemas, properties, and parameters for OpenAI and Claude function calling.

100% Client-Side · In-Memory Only

Interactive Tool Workspace

Loading Function Calling Schema Builder...

How to Use Function Calling Schema Builder

  1. Open the LLM Function Calling Tool Designer interface above.
  2. Enter your input data or configure desired options.
  3. Click execute to run client-side or communicate directly with provider endpoints.
  4. Copy the output result, download data, or export configurations.

Features & Guarantees

  • 100% Client-Side Engine — runs locally with zero uploads to debug.tools servers.
  • Private and secure: all processing runs locally without sending data to a server.
  • No accounts, signups, or usage limits.

Frequently Asked Questions

Is LLM Function Calling Tool Designer free to use?

Yes, 100% free with no limits or subscriptions. All logic and computation execute directly in your web browser.

Does debug.tools store my data or inputs?

No. All processing occurs entirely in your browser memory. We never store, transmit, or log your inputs.

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