Chat Completion

POST 
https://api.knox.chat/v1/chat/completions

Send a chat generation/completion request to the selected model. The request must include a "messages" array. All advanced options from the base request are also supported.

Request

This endpoint requires an object.

Request Headers

Name	Type	Required	Description
Authorization	String	Yes	Bearer authentication in the form of Bearer <token>, where token is your authentication token.

Request Body

Name	Type	Required	Description
model	String	Yes	The model ID to use. If not specified, the user's default setting will be used.
messages	List of Objects	Yes	A list of message objects containing "role" and "content" properties.
models	List of Strings	No	Alternative model list for routing override.
provider	Object	No	Provider routing preference settings.
reasoning	Object	No	Configuration for model reasoning/thought tokens.
usage	Object	No	Whether to include usage information in the response.
transforms	List of Strings	No	A list of prompt transformations (Knox Chat only).
stream	Boolean	No	Enable result streaming. Defaults to false.
max_tokens	Integer	No	Maximum number of tokens (range: [1, context_length)).
temperature	Double	No	Sampling temperature (range: [0, 2]).
seed	Integer	No	Seed for deterministic output.
top_p	Double	No	Top-p sampling value (range: (0, 1]).
top_k	Integer	No	Top-k sampling value (range: [1, Infinity)).
frequency_penalty	Double	No	Frequency penalty (range: [-2, 2]).
presence_penalty	Double	No	Presence penalty (range: [-2, 2]).
repetition_penalty	Double	No	Repetition penalty (range: (0, 2]).
logit_bias	Map of String to Double	No	Mapping from token IDs to bias values.
top_logprobs	Integer	No	Number of top log probabilities to return.
min_p	Double	No	Minimum probability threshold (range: [0, 1]).
top_a	Double	No	Alternative top sampling parameter (range: [0, 1]).

cURL Example

curl -X POST https://api.knox.chat/v1/chat/completions \
     -H "Authorization: Bearer <token>" \
     -H "Content-Type: application/json" \
     -d '{
  "model": "anthropic/claude-sonnet-4.5",
  "messages": [
    {
      "role": "user",
      "content": "Howdy Cowboy!"
    }
  ]
}'

Response

Success Response (200)

{
  "id": "gen-12345",
  "choices": [
    {
      "message": {
        "role": "assistant",
        "content": "Well howdy, partner! What can I rustle up for you today? Need help with a problem, a plan, a story, or just some trail talk?"
      }
    }
  ]
}

Response Schema

Name	Type	Description
id	string	Unique identifier for the completion
choices	array	Array of completion choices
choices[].message	object	The generated message
choices[].message.role	string	Role of the message (typically "assistant")
choices[].message.content	string	Content of the generated message