NovelAI /ai/ API

openapi: 3.1.0
info:
  title: NovelAI Primary /ai/ /ai/ /ai/ API
  description: "\n      The Primary API describes actions that our Frontend makes against the NovelAI backend.\n\n      In general, third-party NovelAI API users should not engage with the Primary API beyond the /ai/ routes.\n\n      Third-party API users developing user-facing applications must ask for a user's Persistent API token to continue.\n      For security reasons it is not recommended to hold a user's credentials in plaintext.\n\n      IMPORTANT: Existing and new API users must read the upcoming generation-specific documentation:\n\n      Image Generation documentation: https://image.novelai.net/docs/index.html\n      Text Generation documentation: https://text.novelai.net/docs/index.html\n    "
  version: '1.0'
  contact: {}
servers:
- url: https://api.novelai.net
  description: NovelAI Primary API
tags:
- name: /ai/
paths:
  /ai/generate:
    post:
      operationId: AIController_aiGenerate
      summary: Generate text. IMPORTANT NOTICE FOR EXISTING API TEXTGEN USERS.
      description: "Generate text using NovelAI's language models.\rIMPORTANT NOTE FOR EXISTING API USERS: We are deprecating Kayra for subscribed users from this API.\rRead more information on the Text Generation documentation at the start of this page."
      parameters: []
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/AiGenerateRequest'
      responses:
        '201':
          description: The output has been successfully generated.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/AiGenerateResponse'
        '400':
          description: A validation error occured.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ApiError'
        '401':
          description: Access Token is incorrect.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ApiError'
        '402':
          description: An active subscription is required to access this endpoint.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ApiError'
        '409':
          description: A conflict error occured.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ApiError'
        '500':
          description: An unknown error occured.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ApiError'
      tags:
      - /ai/
      security:
      - bearer: []
  /ai/generate-prompt:
    post:
      operationId: AIController_aiGeneratePrompt
      parameters: []
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/AiGeneratePromptRequest'
      responses:
        '201':
          description: Prompt has been generated.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/AiGeneratePromptResponse'
        '401':
          description: Access Token is incorrect.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ApiError'
        '500':
          description: An unknown error occured.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ApiError'
      tags:
      - /ai/
      security:
      - bearer: []
  /ai/generate-stream:
    post:
      operationId: AIController_aiGenerateStreamable
      parameters: []
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/AiGenerateRequest'
      responses:
        '201':
          description: The request has been accepted and the output is generating (SSE).
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/AiGenerateStreamableResponse'
        '400':
          description: A validation error occured.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ApiError'
        '401':
          description: Access Token is incorrect.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ApiError'
        '402':
          description: An active subscription is required to access this endpoint.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ApiError'
        '409':
          description: A conflict error occured.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ApiError'
        '500':
          description: An unknown error occured.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ApiError'
      tags:
      - /ai/
      security:
      - bearer: []
  /ai/annotate-image:
    post:
      operationId: AIController_annotateImage
      parameters: []
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/AiAnnotateImageRequest'
      responses:
        '201':
          description: The request has been accepted and the output is generating (ZIP attachment).
        '400':
          description: A validation error occured.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ApiError'
        '401':
          description: Access Token is incorrect.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ApiError'
        '402':
          description: An active subscription is required to access this endpoint.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ApiError'
        '409':
          description: A conflict error occured.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ApiError'
        '500':
          description: An unknown error occured.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ApiError'
      tags:
      - /ai/
      security:
      - bearer: []
  /ai/generate-image:
    post:
      operationId: AIController_aiGenerateImage
      parameters: []
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/AiGenerateImageRequest'
      responses:
        '201':
          description: The request has been accepted and the output is generating (SSE / ZIP attachment).
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/AiGenerateImageResponse'
        '400':
          description: A validation error occured.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ApiError'
        '401':
          description: Access Token is incorrect.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ApiError'
        '402':
          description: An active subscription is required to access this endpoint.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ApiError'
        '409':
          description: A conflict error occured.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ApiError'
        '500':
          description: An unknown error occured.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ApiError'
      tags:
      - /ai/
      security:
      - bearer: []
  /ai/upscale:
    post:
      operationId: AIController_aiUpscaleImage
      parameters: []
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/AiUpscaleImageRequest'
      responses:
        '201':
          description: The request has been accepted and the output is generating (ZIP attachment).
        '400':
          description: A validation error occured.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ApiError'
        '401':
          description: Access Token is incorrect.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ApiError'
        '402':
          description: An active subscription is required to access this endpoint.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ApiError'
        '409':
          description: A conflict error occured.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ApiError'
        '500':
          description: An unknown error occured.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ApiError'
      tags:
      - /ai/
      security:
      - bearer: []
  /ai/classify:
    post:
      operationId: AIController_classify
      parameters: []
      responses:
        '201':
          description: The output has been successfully generated.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/AiSequenceClassificationResponse'
        '400':
          description: A validation error occured.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ApiError'
        '401':
          description: Access Token is incorrect.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ApiError'
        '402':
          description: An active subscription is required to access this endpoint.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ApiError'
        '409':
          description: A conflict error occured.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ApiError'
        '500':
          description: An unknown error occured.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ApiError'
      tags:
      - /ai/
      security:
      - bearer: []
  /ai/generate-image/suggest-tags:
    get:
      operationId: AIController_generateImageTags
      parameters:
      - name: model
        required: true
        in: query
        schema:
          type: string
      - name: prompt
        required: true
        in: query
        schema:
          type: string
      responses:
        '200':
          description: ''
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/AiRequestImageGenerationTagsResponse'
        '401':
          description: Access Token is incorrect.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ApiError'
        '500':
          description: An unknown error occured.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ApiError'
      tags:
      - /ai/
      security:
      - bearer: []
  /ai/generate-voice:
    get:
      operationId: AIController_generateVoice
      summary: Generate voice from text. The GET endpoint has been deprecated, please use the POST endpoint instead.
      deprecated: true
      parameters:
      - name: text
        required: true
        in: query
        schema:
          type: string
      - name: seed
        required: true
        in: query
        schema:
          type: string
      - name: voice
        required: true
        in: query
        schema:
          type: number
      - name: opus
        required: true
        in: query
        schema:
          type: boolean
      - name: version
        required: true
        in: query
        schema:
          type: string
      responses:
        '200':
          description: ''
        '401':
          description: Access Token is incorrect.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ApiError'
        '500':
          description: An unknown error occured.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ApiError'
      tags:
      - /ai/
      security:
      - bearer: []
    post:
      operationId: AIController_generateVoicePost
      parameters: []
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/AiGenerateVoiceRequest'
      responses:
        '201':
          description: ''
        '401':
          description: Access Token is incorrect.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ApiError'
        '500':
          description: An unknown error occured.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ApiError'
      tags:
      - /ai/
      security:
      - bearer: []
components:
  schemas:
    AiGeneratePromptRequest:
      type: object
      properties:
        model:
          default: euterpe-v2
          enum:
          - 2.7B
          - 6B-v4
          - euterpe-v2
          - genji-python-6b
          - genji-jp-6b
          - genji-jp-6b-v2
          - krake-v2
          - hypebot
          - infillmodel
          - cassandra
          - sigurd-2.9b-v1
          - blue
          - red
          - green
          - purple
          - clio-v1
          - kayra-v1
          type: string
          description: Used text generation model
        prompt:
          type: string
          minLength: 1
          maxLength: 40000
          description: Input for the text generation model
          example: Text generation example.
        temp:
          type: number
          minimum: 0.1
          maximum: 100
        tokens_to_generate:
          type: number
          minimum: 1
          maximum: 200
      required:
      - model
      - prompt
      - temp
      - tokens_to_generate
    AiSequenceClassificationResponse:
      type: object
      properties:
        output:
          description: Output, if defined
          anyOf:
          - type: array
            items:
              type: object
              properties:
                label:
                  type: string
                score:
                  type: number
          - type: object
            properties:
              scores:
                type: array
                items:
                  type: number
          example:
          - - label: label
              score: 0
          - scores:
            - - 0.9600785970687866
              - 0.01683211140334606
              - 0.014393973164260387
              - 0.008695312775671482
        error:
          type: string
          description: Error, if defined
    AiGenerateImageResponse:
      type: object
      properties:
        ptr:
          type: number
          description: Incrementing version pointer
        image:
          type: string
          description: Generated image in base64
        final:
          type: boolean
          description: Set to true if the image is final and the generation ended
        error:
          type: string
          description: Error from the generation node, if defined. Usually means the end of stream
    AiRequestImageGenerationTagsResponse:
      type: object
      properties:
        tags:
          type: array
          items:
            $ref: '#/components/schemas/AiRequestImageGenerationTag'
      required:
      - tags
    AiGenerateStreamableResponse:
      type: object
      properties:
        ptr:
          type: number
          description: Incrementing token pointer
        token:
          type: string
          description: Generated token
        final:
          type: boolean
          description: Set to true if the token is final and the generation ended
        error:
          type: string
          description: Error from the generation node, if defined. Usually means the end of stream
    AiGenerateParameters:
      type: object
      properties:
        stop_sequences:
          type: array
          items:
            type: array
            items:
              type: integer
              format: int32
              minimum: 0
        bad_words_ids:
          type: array
          items:
            type: array
            items:
              type: integer
              format: int32
              minimum: 0
        line_start_ids:
          type: array
          items:
            type: array
            items:
              type: integer
              format: int32
              minimum: 0
        use_string:
          type: boolean
          description: If false, input and output strings should be Base64-encoded uint16 numbers representing tokens
          default: false
        logit_bias:
          type: array
          items:
            type: array
            items:
              type: integer
              format: int32
              minimum: 0
            minItems: 2
            maxItems: 2
        logit_bias_exp:
          type: array
          items:
            type: object
            properties:
              sequence:
                type: array
                items:
                  type: integer
                  format: int32
                  minimum: 0
                minItems: 1
              bias:
                type: number
                format: float
              ensure_sequence_finish:
                type: boolean
              generate_once:
                type: boolean
            required:
            - sequence
            - bias
          example:
          - sequence:
            - 9288
            - 286
            - 10690
            bias: 4
            ensure_sequence_finish: true
            generate_once: true
          - sequence:
            - 9288
            - 286
            bias: 2
        order:
          type: array
          items:
            type: integer
            format: int32
            minimum: 0
          minItems: 0
          maxItems: 6
        repetition_penalty_whitelist:
          type: array
          items:
            type: integer
            format: int32
            minimum: 0
        temperature:
          type: number
          minimum: 0.1
          maximum: 100
        min_length:
          type: number
          minimum: 1
          maximum: 2048
        max_length:
          type: number
          minimum: 1
          maximum: 2048
        do_sample:
          type: boolean
        early_stopping:
          type: boolean
        num_beams:
          type: number
        top_k:
          type: number
        top_a:
          type: number
        top_p:
          type: number
        typical_p:
          type: number
        repetition_penalty:
          type: number
        pad_token_id:
          type: number
        bos_token_id:
          type: number
        eos_token_id:
          type: number
        length_penalty:
          type: number
        no_repeat_ngram_size:
          type: number
        encoder_no_repeat_ngram_size:
          type: number
        num_return_sequences:
          type: number
        force_emotion:
          type: boolean
        max_time:
          type: number
        use_cache:
          type: boolean
        num_beam_groups:
          type: number
        diversity_penalty:
          type: number
        tail_free_sampling:
          type: number
          minimum: 0
          maximum: 1
        repetition_penalty_range:
          type: number
          minimum: 0
          maximum: 8192
        repetition_penalty_slope:
          type: number
          minimum: 0
          maximum: 10
        get_hidden_states:
          type: boolean
        repetition_penalty_frequency:
          type: number
          minimum: -2
          maximum: 2
        repetition_penalty_presence:
          type: number
          minimum: -2
          maximum: 2
        next_word:
          type: boolean
        prefix:
          type: string
        output_nonzero_probs:
          type: boolean
        generate_until_sentence:
          type: boolean
        num_logprobs:
          type: number
          minimum: 0
          maximum: 30
        cfg_uc:
          type: string
        cfg_scale:
          type: number
          minimum: 0
        cfg_alpha:
          type: number
          minimum: 0
          maximum: 1
        phrase_rep_pen:
          type: string
        top_g:
          type: number
          minimum: 0
          maximum: 65536
        mirostat_tau:
          type: number
          minimum: 0
        mirostat_lr:
          type: number
          minimum: 0
          maximum: 1
      required:
      - min_length
      - max_length
      - force_emotion
    AiGenerateVoiceRequest:
      type: object
      properties:
        text:
          type: string
        seed:
          type: string
        voice:
          type: number
        opus:
          type: boolean
        version:
          type: string
          enum:
          - v1
          - v2
      required:
      - text
      - seed
      - voice
      - opus
      - version
    AiGenerateResponse:
      type: object
      properties:
        output:
          type: string
          description: Output from the text generation model, if defined
        error:
          type: string
          description: Error from the generation node, if defined
    AiUpscaleImageRequest:
      type: object
      properties:
        image:
          type: string
          description: Image in base64
        width:
          type: number
          description: Width of the input image
        height:
          type: number
          description: Height of the input image
        scale:
          type: number
          enum:
          - 2
          - 4
          description: Upscale factor
          default: 4
      required:
      - image
      - width
      - height
      - scale
    AiGenerateImageRequest:
      type: object
      properties:
        input:
          type: string
          minLength: 1
          maxLength: 40000
          description: Input for the text generation model
          example: Image generation example.
        model:
          enum:
          - nai-diffusion
          - safe-diffusion
          - nai-diffusion-furry
          - custom
          - nai-diffusion-inpainting
          - nai-diffusion-3-inpainting
          - safe-diffusion-inpainting
          - furry-diffusion-inpainting
          - kandinsky-vanilla
          - nai-diffusion-2
          - nai-diffusion-3
          type: string
          description: Used image generation model
        action:
          enum:
          - generate
          - img2img
          - infill
          type: string
          description: Action to use, default is generate
        parameters:
          type: object
          description: Generation parameters (model specific)
        url:
          type: string
          pattern: https:\/\/[0-9a-z\-\_]*\.tenant-novelai\.knative\.(chi\.coreweave\.com|[0-9a-z]+\.coreweave\.cloud)\/.*
          description: Custom image generation URL
      required:
      - input
      - model
      - parameters
    AiGeneratePromptResponse:
      type: object
      properties:
        generated_text:
          type: string
      required:
      - generated_text
    AiRequestImageGenerationTag:
      type: object
      properties:
        tag:
          type: string
        count:
          type: number
        confidence:
          type: number
      required:
      - tag
      - count
      - confidence
    AiAnnotateImageRequest:
      type: object
      properties:
        model:
          enum:
          - canny
          - hed
          - midas
          - mlsd
          - openpose
          - uniformer
          - fake_scribble
          type: string
          description: Model to use
        parameters:
          type: object
          description: Annotation parameters (model specific)
      required:
      - model
      - parameters
    ApiError:
      type: object
      properties:
        statusCode:
          type: number
        message:
          type: string
      required:
      - statusCode
      - message
    AiGenerateRequest:
      type: object
      properties:
        input:
          type: string
          maxLength: 40000
          description: Input for the text generation model
          example: Text generation example.
        model:
          default: euterpe-v2
          enum:
          - 2.7B
          - 6B-v4
          - euterpe-v2
          - genji-python-6b
          - genji-jp-6b
          - genji-jp-6b-v2
          - krake-v2
          - hypebot
          - infillmodel
          - cassandra
          - sigurd-2.9b-v1
          - blue
          - red
          - green
          - purple
          - clio-v1
          - kayra-v1
          type: string
          description: Used text generation model
        parameters:
          description: Generation parameters
          example:
            use_string: true
            temperature: 1
            min_length: 10
            max_length: 30
          allOf:
          - $ref: '#/components/schemas/AiGenerateParameters'
      required:
      - input
      - model
      - parameters
  securitySchemes:
    bearer:
      scheme: bearer
      bearerFormat: JWT
      type: http