# Initialize Embed Session

> POST /api/v1/public/embed/init — request parameters and responses from the Menace Voice API schema.

`POST /api/v1/public/embed/init`

{/* Generated by scripts/sync_docs_api.mjs. Edit the API schema source to change the contract. */}

See [authentication](/api-reference/authentication) for workspace API access. Public embed and artifact endpoints use their documented session or access tokens.

## API contract for documentation tools

Generated from the OpenAPI schema. Do not infer a different parameter type from an example. Authentication headers are alternatives as explained in the authentication guide.

### Request body: application/json

Required body. Schema: InitEmbedRequest (object).

| Field | Type | Required | Description and constraints |
| --- | --- | --- | --- |
| token | string | yes |  |
| context_variables | object or null | no |  |

### Response 200

Successful Response

application/json: InitEmbedResponse (object).

| Field | Type | Required | Description and constraints |
| --- | --- | --- | --- |
| session_token | string | yes |  |
| workflow_run_id | integer | yes |  |
| config | object | yes |  |
| widget_type | string | no | default: "voice" |
| chat_session | PublicEmbedChatSessionResponse (object) or null | no |  |

### Response 404

Not found

### Response 422

Validation Error

application/json: HTTPValidationError (object).

| Field | Type | Required | Description and constraints |
| --- | --- | --- | --- |
| detail | array of ValidationError (object) | no |  |

## OpenAPI

````yaml api-reference/openapi.json post /api/v1/public/embed/init
openapi: 3.1.0
info:
  title: Menace Voice API
  description: API for Menace Voice agents
  version: 1.0.0
servers:
  - url: https://voice.menaceui.com
    description: Production
  - url: http://localhost:8000
    description: Local development
paths:
  /api/v1/public/embed/init:
    post:
      tags:
        - main
      summary: Initialize Embed Session
      description: |-
        Initialize an embed session with token validation and domain checking.

        This endpoint:
        1. Validates the embed token
        2. Checks domain whitelist
        3. Creates a workflow run
        4. Generates a temporary session token
        5. Returns configuration for the widget
      operationId: initialize_embed_session_api_v1_public_embed_init_post
      requestBody:
        content:
          application/json:
            schema:
              $ref: "#/components/schemas/InitEmbedRequest"
        required: true
      responses:
        "200":
          description: Successful Response
          content:
            application/json:
              schema:
                $ref: "#/components/schemas/InitEmbedResponse"
        "404":
          description: Not found
        "422":
          description: Validation Error
          content:
            application/json:
              schema:
                $ref: "#/components/schemas/HTTPValidationError"
components:
  schemas:
    HTTPValidationError:
      properties:
        detail:
          items:
            $ref: "#/components/schemas/ValidationError"
          type: array
          title: Detail
      type: object
      title: HTTPValidationError
    InitEmbedRequest:
      properties:
        token:
          type: string
          title: Token
        context_variables:
          anyOf:
            - additionalProperties: true
              type: object
            - type: "null"
          title: Context Variables
      type: object
      required:
        - token
      title: InitEmbedRequest
      description: Request model for initializing an embed session
    InitEmbedResponse:
      properties:
        session_token:
          type: string
          title: Session Token
        workflow_run_id:
          type: integer
          title: Workflow Run Id
        config:
          additionalProperties: true
          type: object
          title: Config
        widget_type:
          type: string
          title: Widget Type
          default: voice
        chat_session:
          anyOf:
            - $ref: "#/components/schemas/PublicEmbedChatSessionResponse"
            - type: "null"
      type: object
      required:
        - session_token
        - workflow_run_id
        - config
      title: InitEmbedResponse
      description: Response model for embed initialization
    PublicEmbedChatMessage:
      properties:
        text:
          type: string
          title: Text
        created_at:
          anyOf:
            - type: string
            - type: "null"
          title: Created At
      type: object
      required:
        - text
      title: PublicEmbedChatMessage
    PublicEmbedChatSessionResponse:
      properties:
        revision:
          type: integer
          title: Revision
        state:
          type: string
          title: State
        is_completed:
          type: boolean
          title: Is Completed
        turns:
          items:
            $ref: "#/components/schemas/PublicEmbedChatTurn"
          type: array
          title: Turns
      type: object
      required:
        - revision
        - state
        - is_completed
        - turns
      title: PublicEmbedChatSessionResponse
    PublicEmbedChatTurn:
      properties:
        id:
          type: string
          title: Id
        status:
          type: string
          title: Status
        user_message:
          anyOf:
            - $ref: "#/components/schemas/PublicEmbedChatMessage"
            - type: "null"
        assistant_message:
          anyOf:
            - $ref: "#/components/schemas/PublicEmbedChatMessage"
            - type: "null"
      type: object
      required:
        - id
        - status
      title: PublicEmbedChatTurn
    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
````