openapi: 3.2.0
info:
  title: LiteLLM Fallback Management API
  description: "Enterprise Edition \n\nProxy Server to call 100+ LLMs in the OpenAI format. [**Customize Swagger Docs**](https://docs.litellm.ai/docs/proxy/enterprise#swagger-docs---custom-routes--branding)\n\n\U0001F449 [```LiteLLM Admin Panel on /ui```](/ui). Create, Edit Keys with SSO. Having issues? Try [```Fallback Login```](/fallback/login)\n\n\U0001F4B8 [```LiteLLM Model Cost Map```](https://models.litellm.ai/).\n\n\U0001F50E [```LiteLLM Model Hub```](/ui/model_hub_table). See available models on the proxy. [**Docs**](https://docs.litellm.ai/docs/proxy/ai_hub)"
  version: 1.95.0
  x-operator: institution
  x-provenance:
    method: probed
    source: https://llmproxy.uva.nl/openapi.json
    retrieved: '2026-08-19'
    note: Document is generated by the LiteLLM proxy software the University of Amsterdam self-hosts; the deployment, the key issuance and the host (llmproxy.uva.nl, UvA Azure) are the institution's. servers[] added by API Evangelist because the served document omits it; nothing else altered.
servers:
- url: https://llmproxy.uva.nl
  description: University of Amsterdam / Amsterdam University of Applied Sciences shared AI gateway
tags:
- name: Fallback Management
paths:
  /fallback:
    post:
      tags:
      - Fallback Management
      summary: Create Fallback
      description: "Create or update fallbacks for a specific model.\n\nThis endpoint allows you to configure fallback models separately from the general config.\nFallbacks are triggered when a model call fails after retries.\n\n**Example Request:**\n```json\n{\n    \"model\": \"gpt-3.5-turbo\",\n    \"fallback_models\": [\"gpt-4\", \"claude-3-haiku\"],\n    \"fallback_type\": \"general\"\n}\n```\n\n**Fallback Types:**\n- `general`: Standard fallbacks for any error (default)\n- `context_window`: Fallbacks specifically for context window exceeded errors\n- `content_policy`: Fallbacks specifically for content policy violations"
      operationId: create_fallback_fallback_post
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/FallbackCreateRequest'
        required: true
      responses:
        '200':
          description: Successful Response
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/FallbackResponse'
        '422':
          description: Validation Error
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/HTTPValidationError'
      security:
      - APIKeyHeader: []
  /fallback/{model}:
    get:
      tags:
      - Fallback Management
      summary: Get Fallback
      description: 'Get fallback configuration for a specific model.


        **Parameters:**

        - `model`: The model name to get fallbacks for

        - `fallback_type`: Type of fallback to retrieve (query parameter)


        **Example:**

        ```

        GET /fallback/gpt-3.5-turbo?fallback_type=general

        ```'
      operationId: get_fallback_fallback__model__get
      security:
      - APIKeyHeader: []
      parameters:
      - name: model
        in: path
        required: true
        schema:
          type: string
          title: Model
      - name: fallback_type
        in: query
        required: false
        schema:
          enum:
          - general
          - context_window
          - content_policy
          type: string
          default: general
          title: Fallback Type
      responses:
        '200':
          description: Successful Response
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/FallbackGetResponse'
        '422':
          description: Validation Error
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/HTTPValidationError'
    delete:
      tags:
      - Fallback Management
      summary: Delete Fallback
      description: 'Delete fallback configuration for a specific model.


        **Parameters:**

        - `model`: The model name to delete fallbacks for

        - `fallback_type`: Type of fallback to delete (query parameter)


        **Example:**

        ```

        DELETE /fallback/gpt-3.5-turbo?fallback_type=general

        ```'
      operationId: delete_fallback_fallback__model__delete
      security:
      - APIKeyHeader: []
      parameters:
      - name: model
        in: path
        required: true
        schema:
          type: string
          title: Model
      - name: fallback_type
        in: query
        required: false
        schema:
          enum:
          - general
          - context_window
          - content_policy
          type: string
          default: general
          title: Fallback Type
      responses:
        '200':
          description: Successful Response
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/FallbackDeleteResponse'
        '422':
          description: Validation Error
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/HTTPValidationError'
components:
  schemas:
    FallbackResponse:
      properties:
        model:
          type: string
          title: Model
          description: The model name
        fallback_models:
          items:
            type: string
          type: array
          title: Fallback Models
          description: List of fallback model names
        fallback_type:
          type: string
          title: Fallback Type
          description: Type of fallback
        message:
          type: string
          title: Message
          description: Success message
      type: object
      required:
      - model
      - fallback_models
      - fallback_type
      - message
      title: FallbackResponse
      description: Response model for fallback operations
    FallbackCreateRequest:
      properties:
        model:
          type: string
          title: Model
          description: The model name to configure fallbacks for (e.g., 'gpt-3.5-turbo')
        fallback_models:
          items:
            type: string
          type: array
          minItems: 1
          title: Fallback Models
          description: List of fallback model names in order of priority
        fallback_type:
          type: string
          enum:
          - general
          - context_window
          - content_policy
          title: Fallback Type
          description: 'Type of fallback: ''general'' (default), ''context_window'', or ''content_policy'''
          default: general
      type: object
      required:
      - model
      - fallback_models
      title: FallbackCreateRequest
      description: Request model for creating/updating fallbacks
    FallbackGetResponse:
      properties:
        model:
          type: string
          title: Model
          description: The model name
        fallback_models:
          items:
            type: string
          type: array
          title: Fallback Models
          description: List of fallback model names
        fallback_type:
          type: string
          title: Fallback Type
          description: Type of fallback
      type: object
      required:
      - model
      - fallback_models
      - fallback_type
      title: FallbackGetResponse
      description: Response model for getting fallbacks
    ValidationError:
      properties:
        loc:
          items:
            anyOf:
            - type: string
            - type: integer
          type: array
          title: Location
        msg:
          type: string
          title: Message
        type:
          type: string
          title: Error Type
        input:
          title: Input
        ctx:
          type: object
          title: Context
      type: object
      required:
      - loc
      - msg
      - type
      title: ValidationError
    FallbackDeleteResponse:
      properties:
        model:
          type: string
          title: Model
          description: The model name
        fallback_type:
          type: string
          title: Fallback Type
          description: Type of fallback
        message:
          type: string
          title: Message
          description: Success message
      type: object
      required:
      - model
      - fallback_type
      - message
      title: FallbackDeleteResponse
      description: Response model for deleting fallbacks
    HTTPValidationError:
      properties:
        detail:
          items:
            $ref: '#/components/schemas/ValidationError'
          type: array
          title: Detail
      type: object
      title: HTTPValidationError
  securitySchemes:
    APIKeyHeader:
      type: apiKey
      description: Bearer token
      in: header
      name: x-litellm-api-key