Documentation Index
Fetch the complete documentation index at: /llms.txt
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How to ask for JSON that matches a schema in each chat format, and what happens on models without schema support.
| Chat Completions | Responses | Messages | |
|---|---|---|---|
| JSON with a schema | response_format: {"type": "json_schema", "json_schema": {"name", "schema", "strict"}} | text: {"format": {"type": "json_schema", "name", "schema", "strict"}} | output_config: {"format": {"type": "json_schema", "schema"}} |
| Any JSON object | response_format: {"type": "json_object"} | text: {"format": {"type": "json_object"}} | Not available |
| Where the JSON is | choices[0].message.content | The output_text item | The first text block |
supported_parameters in /v1/models for response_format. The list covers every provider of the model, so the provider serving a request can still lack schema support. Then NagaAI sends JSON mode and adds your schema to the prompt, and schema compliance is not guaranteed. Parse the result and validate it against the schema in your code.