> ## Documentation Index
> Fetch the complete documentation index at: https://docs.dualmindlab.tech/llms.txt
> Use this file to discover all available pages before exploring further.

> ## Agent Instructions
> DualMind Arena API base URL: https://api.dualmindlab.tech. Public endpoints only; admin routes are not part of this API.
> Authenticate with the access token from an Arena session (a Supabase JWT) as `Authorization: Bearer <token>`. There are no API keys yet; never invent one.
> For battles call POST /api/arena/dualchat, then vote with POST /api/arena/model-vote using the returned comparisonId. Keep model names hidden from voters until they vote.
> GET /api/arena/model-stats (leaderboard) and GET /health need no token.

# Create a thread

> Create an empty thread. New threads are `private`.

Then pass the `threadId` to [Start a battle](/api-reference/chat/dual-chat) or [Chat](/api-reference/chat/single-chat) to save turns to it.


## OpenAPI

````yaml POST /api/threads
openapi: 3.1.0
info:
  title: DualMind Arena API
  version: 1.0.0
  description: >-
    The REST API behind DualMind Arena: blind battles, votes, the leaderboard,
    models and threads.
  contact:
    name: DualMind Labs
    email: support@dualmindlab.tech
    url: https://dualmindlab.tech
servers:
  - url: https://api.dualmindlab.tech
    description: Production
security:
  - bearerAuth: []
tags:
  - name: Arena
    description: Battles and chat.
  - name: Voting
    description: Votes and the leaderboard.
  - name: Models
    description: Available models.
  - name: Threads
    description: Saved conversations and sharing.
  - name: Utilities
    description: Health and feature flags.
paths:
  /api/threads:
    post:
      tags:
        - Threads
      summary: Create a thread
      description: Create an empty thread. New threads are `private`.
      operationId: createThread
      requestBody:
        required: false
        content:
          application/json:
            schema:
              type: object
              properties:
                title:
                  type: string
                  default: New Chat
                  description: Thread title.
                mode:
                  type: string
                  enum:
                    - battle
                    - arena
                    - direct
                  default: battle
                  description: The Arena mode this thread is for.
            example:
              title: TCP vs UDP
              mode: battle
      responses:
        '200':
          description: The new thread.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Thread'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '500':
          description: Unexpected server error.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
      security:
        - bearerAuth: []
components:
  schemas:
    Thread:
      type: object
      properties:
        threadId:
          type: string
          format: uuid
        userId:
          type: string
          format: uuid
        title:
          type: string
        mode:
          type: string
          enum:
            - battle
            - arena
            - direct
          description: >-
            `battle` = blind Battle, `arena` = Side by Side, `direct` = Direct
            Chat.
        visibility:
          type: string
          enum:
            - private
            - unlisted
            - public
          default: private
        messageCount:
          type: integer
        createdAt:
          type: string
          format: date-time
        updatedAt:
          type:
            - string
            - 'null'
          format: date-time
    Error:
      type: object
      description: >-
        Error envelope used by the threads, voting, models and settings
        endpoints.
      properties:
        success:
          type: boolean
          const: false
        error:
          type: string
          description: Human-readable message.
        code:
          type: string
          description: >-
            Machine-readable code, e.g. `INVALID_REQUEST`, `NOT_FOUND`,
            `FORBIDDEN`, `UNAUTHORIZED`, `VOTE_ERROR`.
  responses:
    Unauthorized:
      description: >-
        Missing, invalid or expired token. The body is empty; the
        `WWW-Authenticate` header explains why.
  securitySchemes:
    bearerAuth:
      type: http
      scheme: bearer
      bearerFormat: JWT
      description: >-
        The access token from your DualMind Arena session (a Supabase JWT). See
        Authentication.

````

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