# Count Tokens API schemas

CountTokensRequest:
  type: object
  required:
    - model
    - messages
  properties:
    model:
      type: string
      description: Model in provider/model format
    messages:
      type: array
      items:
        $ref: './responses.yaml#/ResponsesMessage'
    fallbacks:
      type: array
      items:
        type: string
    tools:
      type: array
      items:
        $ref: './responses.yaml#/ResponsesTool'
    instructions:
      type: string
    text:
      type: string

CountTokensResponse:
  type: object
  properties:
    object:
      type: string
    model:
      type: string
    input_tokens:
      type: integer
    input_tokens_details:
      $ref: './responses.yaml#/ResponsesResponseInputTokens'
    tokens:
      type: array
      items:
        type: integer
    token_strings:
      type: array
      items:
        type: string
    output_tokens:
      type: integer
    total_tokens:
      type: integer
    extra_fields:
      $ref: './common.yaml#/BifrostResponseExtraFields'