LangWatch Model Providers API

openapi: 3.1.0
info:
  title: LangWatch Agents Model Providers API
  version: 1.0.0
  description: LangWatch openapi spec
servers:
- url: https://app.langwatch.ai
security:
- project_api_key: []
tags:
- name: Model Providers
paths:
  /api/model-providers:
    get:
      responses:
        '200':
          description: Success
          content:
            application/json:
              schema:
                type: object
                additionalProperties:
                  type: object
                  properties:
                    id:
                      type: string
                    provider:
                      type: string
                    enabled:
                      type: boolean
                    customKeys:
                      type:
                      - object
                      - 'null'
                      additionalProperties: {}
                    deploymentMapping:
                      type: 'null'
                    models:
                      type:
                      - array
                      - 'null'
                      items:
                        type: string
                    embeddingsModels:
                      type:
                      - array
                      - 'null'
                      items:
                        type: string
                    customModels:
                      type:
                      - array
                      - 'null'
                      items:
                        type: object
                        properties:
                          modelId:
                            type: string
                            minLength: 1
                          displayName:
                            type: string
                            minLength: 1
                          mode:
                            type: string
                            enum:
                            - chat
                            - embedding
                          maxTokens:
                            type:
                            - number
                            - 'null'
                            exclusiveMinimum: 0
                          supportedParameters:
                            type: array
                            items:
                              type: string
                              enum:
                              - temperature
                              - max_tokens
                              - top_p
                              - frequency_penalty
                              - presence_penalty
                              - top_k
                              - min_p
                              - repetition_penalty
                              - seed
                              - reasoning
                              - verbosity
                          multimodalInputs:
                            type: array
                            items:
                              type: string
                              enum:
                              - image
                              - file
                              - audio
                        required:
                        - modelId
                        - displayName
                        - mode
                    customEmbeddingsModels:
                      type:
                      - array
                      - 'null'
                      items:
                        type: object
                        properties:
                          modelId:
                            type: string
                            minLength: 1
                          displayName:
                            type: string
                            minLength: 1
                          mode:
                            type: string
                            enum:
                            - chat
                            - embedding
                          maxTokens:
                            type:
                            - number
                            - 'null'
                            exclusiveMinimum: 0
                          supportedParameters:
                            type: array
                            items:
                              type: string
                              enum:
                              - temperature
                              - max_tokens
                              - top_p
                              - frequency_penalty
                              - presence_penalty
                              - top_k
                              - min_p
                              - repetition_penalty
                              - seed
                              - reasoning
                              - verbosity
                          multimodalInputs:
                            type: array
                            items:
                              type: string
                              enum:
                              - image
                              - file
                              - audio
                        required:
                        - modelId
                        - displayName
                        - mode
                    disabledByDefault:
                      type: boolean
                    extraHeaders:
                      type:
                      - array
                      - 'null'
                      items:
                        type: object
                        properties:
                          key:
                            type: string
                          value:
                            type: string
                        required:
                        - key
                        - value
                  required:
                  - provider
                  - enabled
                  - customKeys
        '400':
          description: Bad Request
          content:
            application/json:
              schema:
                type: object
                properties:
                  error:
                    type: string
                  message:
                    type: string
                required:
                - error
        '401':
          description: Unauthorized
          content:
            application/json:
              schema:
                type: object
                properties:
                  error:
                    type: string
                  message:
                    type: string
                required:
                - error
        '422':
          description: Unprocessable Entity
          content:
            application/json:
              schema:
                type: object
                properties:
                  error:
                    type: string
                  message:
                    type: string
                required:
                - error
        '500':
          description: Internal Server Error
          content:
            application/json:
              schema:
                type: object
                properties:
                  error:
                    type: string
                  message:
                    type: string
                required:
                - error
      operationId: getApiModel-providers
      parameters: []
      description: List all model providers for a project with masked API keys
      tags:
      - Model Providers
  /api/model-providers/{provider}:
    put:
      responses:
        '200':
          description: Success
          content:
            application/json:
              schema:
                type: object
                additionalProperties:
                  type: object
                  properties:
                    id:
                      type: string
                    provider:
                      type: string
                    enabled:
                      type: boolean
                    customKeys:
                      type:
                      - object
                      - 'null'
                      additionalProperties: {}
                    deploymentMapping:
                      type: 'null'
                    models:
                      type:
                      - array
                      - 'null'
                      items:
                        type: string
                    embeddingsModels:
                      type:
                      - array
                      - 'null'
                      items:
                        type: string
                    customModels:
                      type:
                      - array
                      - 'null'
                      items:
                        type: object
                        properties:
                          modelId:
                            type: string
                            minLength: 1
                          displayName:
                            type: string
                            minLength: 1
                          mode:
                            type: string
                            enum:
                            - chat
                            - embedding
                          maxTokens:
                            type:
                            - number
                            - 'null'
                            exclusiveMinimum: 0
                          supportedParameters:
                            type: array
                            items:
                              type: string
                              enum:
                              - temperature
                              - max_tokens
                              - top_p
                              - frequency_penalty
                              - presence_penalty
                              - top_k
                              - min_p
                              - repetition_penalty
                              - seed
                              - reasoning
                              - verbosity
                          multimodalInputs:
                            type: array
                            items:
                              type: string
                              enum:
                              - image
                              - file
                              - audio
                        required:
                        - modelId
                        - displayName
                        - mode
                    customEmbeddingsModels:
                      type:
                      - array
                      - 'null'
                      items:
                        type: object
                        properties:
                          modelId:
                            type: string
                            minLength: 1
                          displayName:
                            type: string
                            minLength: 1
                          mode:
                            type: string
                            enum:
                            - chat
                            - embedding
                          maxTokens:
                            type:
                            - number
                            - 'null'
                            exclusiveMinimum: 0
                          supportedParameters:
                            type: array
                            items:
                              type: string
                              enum:
                              - temperature
                              - max_tokens
                              - top_p
                              - frequency_penalty
                              - presence_penalty
                              - top_k
                              - min_p
                              - repetition_penalty
                              - seed
                              - reasoning
                              - verbosity
                          multimodalInputs:
                            type: array
                            items:
                              type: string
                              enum:
                              - image
                              - file
                              - audio
                        required:
                        - modelId
                        - displayName
                        - mode
                    disabledByDefault:
                      type: boolean
                    extraHeaders:
                      type:
                      - array
                      - 'null'
                      items:
                        type: object
                        properties:
                          key:
                            type: string
                          value:
                            type: string
                        required:
                        - key
                        - value
                  required:
                  - provider
                  - enabled
                  - customKeys
        '400':
          description: Bad request
          content:
            application/json:
              schema:
                type: object
                properties:
                  error:
                    type: string
                required:
                - error
        '401':
          description: Unauthorized
          content:
            application/json:
              schema:
                type: object
                properties:
                  error:
                    type: string
                  message:
                    type: string
                required:
                - error
        '422':
          description: Unprocessable Entity
          content:
            application/json:
              schema:
                type: object
                properties:
                  error:
                    type: string
                  message:
                    type: string
                required:
                - error
        '500':
          description: Internal Server Error
          content:
            application/json:
              schema:
                type: object
                properties:
                  error:
                    type: string
                  message:
                    type: string
                required:
                - error
      operationId: putApiModel-providersByProvider
      parameters:
      - schema:
          type: string
        in: path
        name: provider
        required: true
      description: Create or update a model provider
      requestBody:
        content:
          application/json:
            schema:
              type: object
              properties:
                enabled:
                  type: boolean
                customKeys:
                  type: object
                  additionalProperties: {}
                customModels:
                  anyOf:
                  - type: array
                    items:
                      type: object
                      properties:
                        modelId:
                          type: string
                          minLength: 1
                        displayName:
                          type: string
                          minLength: 1
                        mode:
                          type: string
                          enum:
                          - chat
                          - embedding
                        maxTokens:
                          type:
                          - number
                          - 'null'
                          exclusiveMinimum: 0
                        supportedParameters:
                          type: array
                          items:
                            type: string
                            enum:
                            - temperature
                            - max_tokens
                            - top_p
                            - frequency_penalty
                            - presence_penalty
                            - top_k
                            - min_p
                            - repetition_penalty
                            - seed
                            - reasoning
                            - verbosity
                        multimodalInputs:
                          type: array
                          items:
                            type: string
                            enum:
                            - image
                            - file
                            - audio
                      required:
                      - modelId
                      - displayName
                      - mode
                  - type: array
                    items:
                      type: string
                customEmbeddingsModels:
                  anyOf:
                  - type: array
                    items:
                      type: object
                      properties:
                        modelId:
                          type: string
                          minLength: 1
                        displayName:
                          type: string
                          minLength: 1
                        mode:
                          type: string
                          enum:
                          - chat
                          - embedding
                        maxTokens:
                          type:
                          - number
                          - 'null'
                          exclusiveMinimum: 0
                        supportedParameters:
                          type: array
                          items:
                            type: string
                            enum:
                            - temperature
                            - max_tokens
                            - top_p
                            - frequency_penalty
                            - presence_penalty
                            - top_k
                            - min_p
                            - repetition_penalty
                            - seed
                            - reasoning
                            - verbosity
                        multimodalInputs:
                          type: array
                          items:
                            type: string
                            enum:
                            - image
                            - file
                            - audio
                      required:
                      - modelId
                      - displayName
                      - mode
                  - type: array
                    items:
                      type: string
                extraHeaders:
                  type: array
                  items:
                    type: object
                    properties:
                      key:
                        type: string
                      value:
                        type: string
                    required:
                    - key
                    - value
                defaultModel:
                  type: string
              required:
              - enabled
      tags:
      - Model Providers
components:
  securitySchemes:
    project_api_key:
      type: apiKey
      in: header
      name: X-Auth-Token
      description: 'Project API key for sending traces and accessing project-scoped resources. Format: sk-lw-... (no underscore). Obtain one by creating a project via the Admin API or the LangWatch UI.'
    admin_api_key:
      type: http
      scheme: bearer
      description: 'Admin API key for organization-level operations (managing projects, API keys). Create one in Settings > API Keys or via POST /api/api-keys. Format: sk-lw-{id}_{secret}.'