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OpenAPI Specification

openapi: 3.0.1
info:
  title: langfuse AnnotationQueues LlmConnections API
  version: "1.0"
  description: '## Authentication


    Authenticate with the API using [Basic Auth](https://en.wikipedia.org/wiki/Basic_access_authentication), get API keys in the project settings:


    - username: Langfuse Public Key

    - password: Langfuse Secret Key


    ## Exports


    - OpenAPI spec: https://cloud.langfuse.com/generated/api/openapi.yml'
tags:
- name: LlmConnections
paths:
  /api/public/llm-connections:
    get:
      description: Get all LLM connections in a project
      operationId: llmConnections_list
      tags:
      - LlmConnections
      parameters:
      - name: page
        in: query
        description: page number, starts at 1
        required: false
        schema:
          type: integer
          nullable: true
      - name: limit
        in: query
        description: limit of items per page
        required: false
        schema:
          type: integer
          nullable: true
      responses:
        '200':
          description: ''
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/PaginatedLlmConnections'
        '400':
          description: ''
          content:
            application/json:
              schema: {}
        '401':
          description: ''
          content:
            application/json:
              schema: {}
        '403':
          description: ''
          content:
            application/json:
              schema: {}
        '404':
          description: ''
          content:
            application/json:
              schema: {}
        '405':
          description: ''
          content:
            application/json:
              schema: {}
      security:
      - BasicAuth: []
    put:
      description: Create or update an LLM connection. The connection is upserted on provider.
      operationId: llmConnections_upsert
      tags:
      - LlmConnections
      parameters: []
      responses:
        '200':
          description: ''
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/LlmConnection'
        '400':
          description: ''
          content:
            application/json:
              schema: {}
        '401':
          description: ''
          content:
            application/json:
              schema: {}
        '403':
          description: ''
          content:
            application/json:
              schema: {}
        '404':
          description: ''
          content:
            application/json:
              schema: {}
        '405':
          description: ''
          content:
            application/json:
              schema: {}
      security:
      - BasicAuth: []
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/UpsertLlmConnectionRequest'
  /api/public/llm-connections/{id}:
    delete:
      description: Delete an LLM connection by id. Evaluators that depend on the deleted connection are automatically paused.
      operationId: llmConnections_delete
      tags:
      - LlmConnections
      parameters:
      - name: id
        in: path
        required: true
        schema:
          type: string
      responses:
        '200':
          description: ''
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/DeleteLlmConnectionResponse'
        '400':
          description: ''
          content:
            application/json:
              schema: {}
        '401':
          description: ''
          content:
            application/json:
              schema: {}
        '403':
          description: ''
          content:
            application/json:
              schema: {}
        '404':
          description: ''
          content:
            application/json:
              schema: {}
        '405':
          description: ''
          content:
            application/json:
              schema: {}
      security:
      - BasicAuth: []
components:
  schemas:
    utilsMetaResponse:
      title: utilsMetaResponse
      type: object
      properties:
        page:
          type: integer
          description: current page number
        limit:
          type: integer
          description: number of items per page
        totalItems:
          type: integer
          description: number of total items given the current filters/selection (if any)
        totalPages:
          type: integer
          description: number of total pages given the current limit
      required:
      - page
      - limit
      - totalItems
      - totalPages
    DeleteLlmConnectionResponse:
      title: DeleteLlmConnectionResponse
      type: object
      properties:
        message:
          type: string
      required:
      - message
    LlmAdapter:
      title: LlmAdapter
      type: string
      enum:
      - anthropic
      - openai
      - azure
      - bedrock
      - google-vertex-ai
      - google-ai-studio
    PaginatedLlmConnections:
      title: PaginatedLlmConnections
      type: object
      properties:
        data:
          type: array
          items:
            $ref: '#/components/schemas/LlmConnection'
        meta:
          $ref: '#/components/schemas/utilsMetaResponse'
      required:
      - data
      - meta
    UpsertLlmConnectionRequest:
      title: UpsertLlmConnectionRequest
      type: object
      description: Request to create or update an LLM connection (upsert)
      properties:
        provider:
          type: string
          description: Provider name (e.g., 'openai', 'my-gateway'). Must be unique in project, used for upserting.
        adapter:
          $ref: '#/components/schemas/LlmAdapter'
          description: The adapter used to interface with the LLM
        secretKey:
          type: string
          description: Secret key for the LLM API.
        baseURL:
          type: string
          nullable: true
          description: Custom base URL for the LLM API
        customModels:
          type: array
          items:
            type: string
          nullable: true
          description: List of custom model names
        withDefaultModels:
          type: boolean
          nullable: true
          description: Whether to include default models. Default is true.
        extraHeaders:
          type: object
          additionalProperties:
            type: string
          nullable: true
          description: Extra headers to send with requests
        config:
          type: object
          additionalProperties: true
          nullable: true
          description: 'Adapter-specific configuration. Validation rules: - **Bedrock**: Required. Must be `{"region": "<aws-region>"}` (e.g., `{"region":"us-east-1"}`) - **VertexAI**: Optional. If provided, must be `{"location": "<gcp-location>"}` (e.g., `{"location":"us-central1"}`) - **Other adapters**: Not supported. Omit this field or set to null.'
      required:
      - provider
      - adapter
      - secretKey
    LlmConnection:
      title: LlmConnection
      type: object
      description: LLM API connection configuration (secrets excluded)
      properties:
        id:
          type: string
        provider:
          type: string
          description: Provider name (e.g., 'openai', 'my-gateway'). Must be unique in project, used for upserting.
        adapter:
          type: string
          description: The adapter used to interface with the LLM
        displaySecretKey:
          type: string
          description: Masked version of the secret key for display purposes
        baseURL:
          type: string
          nullable: true
          description: Custom base URL for the LLM API
        customModels:
          type: array
          items:
            type: string
          description: List of custom model names available for this connection
        withDefaultModels:
          type: boolean
          description: Whether to include default models for this adapter
        extraHeaderKeys:
          type: array
          items:
            type: string
          description: Keys of extra headers sent with requests (values excluded for security)
        config:
          type: object
          additionalProperties: true
          nullable: true
          description: Adapter-specific configuration. Required for Bedrock (`{"region":"us-east-1"}`), optional for VertexAI (`{"location":"us-central1"}`), not used by other adapters.
        createdAt:
          type: string
          format: date-time
        updatedAt:
          type: string
          format: date-time
      required:
      - id
      - provider
      - adapter
      - displaySecretKey
      - customModels
      - withDefaultModels
      - extraHeaderKeys
      - createdAt
      - updatedAt
  securitySchemes:
    BasicAuth:
      type: http
      scheme: basic