OpenAI API JSON Validator

Runs in your browser — nothing is uploaded
Paste a request body or tool/function schema
Formatted 

    

  







About this tool
 Checks the structure of a chat completions request body or a function/tool schema against OpenAI's documented shape — valid JSON, required fields present, function names matching the allowed pattern, etc. It does not call the OpenAI API, so it can't tell you whether your API key is valid, the model name exists, or the request would actually succeed.


Frequently asked questions
What is OpenAI API JSON Validator?
Validate a chat completions request or function/tool schema shape. It is one of the API & HTTP Tools tools on MyCodeTips.
How do I use OpenAI API JSON Validator?
Open the tool, enter or paste your input, and the result appears right away. Use the Copy button to copy it.
Is OpenAI API JSON Validator free to use?
Yes. It is free to use and does not need an account.
Is my data safe with OpenAI API JSON Validator?
Yes. It runs entirely in your browser, so what you enter is never uploaded to our servers.
Can I share my result?
Yes. Use the share buttons below the tool to post a link or copy a link to the tool page.

  

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