Voiceflow

Voiceflow Variables API

Patch session variables.

Documentation GitHub OpenAPI

Specifications

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OpenAPI

https://raw.githubusercontent.com/api-evangelist/voiceflow/refs/heads/main/openapi/voiceflow-variables-api-openapi.yml

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OpenAPI Specification

openapi: 3.1.0
info:
  title: Voiceflow Conversations Interact Variables API
  version: 1.0.0
  summary: REST + SSE API for running Voiceflow agent turns and managing session state.
  description: 'The Voiceflow Conversations API (formerly Dialog Manager API) enables programmatic

    interaction with Voiceflow agents — running turns, managing session state, and

    modifying conversation variables.


    Documentation: https://docs.voiceflow.com/reference

    '
  contact:
    name: Voiceflow Docs
    url: https://docs.voiceflow.com/reference
servers:
- url: https://general-runtime.voiceflow.com
  description: Voiceflow general runtime
security:
- apiKey: []
tags:
- name: Variables
  description: Patch session variables.
paths:
  /state/user/{userID}/variables:
    patch:
      tags:
      - Variables
      summary: Merge variables into current state
      operationId: updateVariables
      parameters:
      - $ref: '#/components/parameters/UserID'
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              additionalProperties: true
              description: Key/value map of variables to merge into session state.
      responses:
        '200':
          description: Updated state
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ConversationState'
components:
  schemas:
    ConversationState:
      type: object
      properties:
        variables:
          type: object
          additionalProperties: true
        stack:
          type: array
          items:
            type: object
            additionalProperties: true
        storage:
          type: object
          additionalProperties: true
  parameters:
    UserID:
      name: userID
      in: path
      required: true
      schema:
        type: string
      description: Stable identifier for the end user / conversation participant.
  securitySchemes:
    apiKey:
      type: apiKey
      in: header
      name: Authorization
      description: 'Voiceflow Dialog Manager API key (format `VF.DM.*`) sent in the

        `Authorization` header.

        '