openapi: 3.1.0
info:
  title: Gradient Labs Actions & Tools Hand-off API
  version: '1.0'
  description: 'HTTP API for Gradient Labs'' AI customer support agent ("Otto"). Use it to start and drive support conversations, add customer and human-agent messages, assign work to the AI agent, hand off to humans, run business tools/actions, and manage the knowledge base the agent reasons over.


    All requests are authenticated with a Bearer API key in the `Authorization` header. Unless stated otherwise, endpoints are idempotent and requests can be safely retried.


    IMPORTANT (accuracy note): Gradient Labs'' public API reference at https://api-docs.gradient-labs.ai/ is behind an access-code gate. The paths, verbs, and field names in this document were reconstructed from the vendor''s official open-source Go SDK (github.com/gradientlabs-ai/gradientlabs-go) and corroborating SDKs. Request/response schemas are modeled and simplified; verify exact field-level shapes against the gated reference before relying on them in production. See review.yml (endpointsConfirmed vs endpointsModeled).'
  contact:
    name: Gradient Labs
    url: https://www.gradient-labs.ai
  license:
    name: Proprietary
servers:
- url: https://api.gradient-labs.ai
  description: Gradient Labs production API
security:
- bearerAuth: []
tags:
- name: Hand-off
  description: Assign conversations between the AI agent and human participants.
paths:
  /conversations/{conversationID}/assignee:
    put:
      tags:
      - Hand-off
      operationId: assignConversation
      summary: Assign a conversation
      description: Assigns or reassigns a conversation to a participant. Set assignee_type to ai-agent to assign the conversation to the Gradient Labs AI agent.
      parameters:
      - $ref: '#/components/parameters/ConversationID'
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/AssignmentParams'
      responses:
        '200':
          description: Conversation assigned.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Conversation'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '404':
          $ref: '#/components/responses/NotFound'
components:
  schemas:
    Conversation:
      type: object
      properties:
        id:
          type: string
        customer_id:
          type: string
        channel:
          $ref: '#/components/schemas/Channel'
        assignee_id:
          type: string
        assignee_type:
          $ref: '#/components/schemas/ParticipantType'
        status:
          type: string
          description: Current lifecycle status of the conversation.
        created:
          type: string
          format: date-time
    AssignmentParams:
      type: object
      required:
      - assignee_type
      properties:
        assignee_id:
          type: string
          description: The specific user the conversation is being assigned to.
        assignee_type:
          $ref: '#/components/schemas/ParticipantType'
        timestamp:
          type: string
          format: date-time
          description: When the assignment happened; defaults to now.
        reason:
          type: string
          description: Optional description of why this assignment is happening.
    Error:
      type: object
      properties:
        error:
          type: string
        message:
          type: string
    Channel:
      type: string
      description: The channel a conversation is taking place on; determines how the AI agent formats its responses.
      enum:
      - email
      - chat
      - sms
      - voice
    ParticipantType:
      type: string
      description: The type of participant in a conversation.
      enum:
      - ai-agent
      - customer
      - human-agent
  responses:
    NotFound:
      description: Resource not found.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'
    Unauthorized:
      description: Missing or invalid API key.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'
  parameters:
    ConversationID:
      name: conversationID
      in: path
      required: true
      description: Your unique identifier for the conversation.
      schema:
        type: string
  securitySchemes:
    bearerAuth:
      type: http
      scheme: bearer
      description: Provide your Gradient Labs API key as a Bearer token in the Authorization header. Some administrative endpoints (tools) require a Management API key.