# Force JSON object response format

Users can now force `command-nightly`to generate outputs in JSON objects by setting the `response_format` parameter in the Chat API. Users can also specify a JSON schema for the output.

This feature is available across all of Cohere's SDKs (Python, Typescript, Java, Go).

Example request for forcing JSON response format:

```Text cURL
POST https://api.cohere.ai/v1/chat
{
    "message": "Generate a JSON that represents a person, with name and age",
    "model": "command-nightly",
    "response_format": {
        "type": "json_object"
    }
}
```

Example request for forcing JSON response format in user defined schema:

```Text cURL
POST https://api.cohere.ai/v1/chat
{
    "message": "Generate a JSON that represents a person, with name and age",
    "model": "command-nightly",
    "response_format": {
        "type": "json_object",
        "schema": {
            "type": "object",
            "required": ["name", "age"],
            "properties": {
                "name": { "type": "string" },
                "age": { "type": "integer" }
            }
        }
    }
}

```

Currently only compatible with \`command-nightly model.

## Related pages

- [Changelog](../changelog.md)
- [Cohere](../index.md)
- [Cohere API](./cohere-api-index.md)
- [Cohere Labs](./cohere-labs-index.md)
- [Cohere Platform](./cohere-platform-index.md)
- [Cookbooks](./cookbooks-index.md)
- [Deployment Options](./deployment-options-index.md)
- [Embeddings (Vectors, Search, Retrieval)](./embeddings-vectors-search-retrieval-index.md)
- [Get Started](./get-started-index.md)
- [Going to Production](./going-to-production-index.md)

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