openapi: 3.0.1
info:
  title: Pieces OS Local Applications Conversations API
  description: The Pieces OS local REST API. Pieces OS is an on-device process that runs on the developer's machine and serves this API over the loopback interface at http://localhost:1000. It backs the Pieces Copilot, saved snippets (assets), local and cloud model management, and workspace context, and is the source of the official OpenAPI-generated SDKs. This document captures the core documented resources (assets, formats, copilot/QGPT, conversations, models, applications, user, and well-known). For the complete machine-generated specification see the upstream pieces-os-client-openapi-spec repository.
  termsOfService: https://pieces.app/legal/terms
  contact:
    name: Pieces Support
    url: https://docs.pieces.app
  version: '1.0'
servers:
- url: http://localhost:1000
  description: Default on-device Pieces OS port (loopback only).
- url: http://localhost:5323
  description: Alternate on-device Pieces OS port.
tags:
- name: Conversations
  description: Copilot conversations and their messages.
paths:
  /conversations:
    get:
      operationId: getConversationsSnapshot
      tags:
      - Conversations
      summary: Get a snapshot of all Copilot conversations.
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Conversations'
  /conversations/create:
    post:
      operationId: createConversation
      tags:
      - Conversations
      summary: Create a new Copilot conversation.
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Conversation'
  /conversation/{conversation}:
    get:
      operationId: getConversation
      tags:
      - Conversations
      summary: Get a single conversation by identifier.
      parameters:
      - name: conversation
        in: path
        required: true
        schema:
          type: string
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Conversation'
  /conversation/{conversation}/messages:
    get:
      operationId: getConversationMessages
      tags:
      - Conversations
      summary: List the messages in a conversation.
      parameters:
      - name: conversation
        in: path
        required: true
        schema:
          type: string
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                type: object
components:
  schemas:
    Conversation:
      type: object
      properties:
        id:
          type: string
        name:
          type: string
        type:
          type: string
    Conversations:
      type: object
      properties:
        iterable:
          type: array
          items:
            $ref: '#/components/schemas/Conversation'