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

# Sports Markets

> Browse prediction markets for a specific sport and date.

Returns markets from Polymarket and Kalshi, grouped by event.

**Valid sports:** `nfl`, `nba`, `mlb`, `nhl`, `cfb` (college football), `cbb` (college basketball), `pga` (golf), `tennis`



## OpenAPI

````yaml GET /v1/sports/{sport}
openapi: 3.1.0
info:
  title: Arbiter
  description: >-
    Unified prediction market API. Aggregates Polymarket and Kalshi into a
    single interface with normalized data, historical trades, OHLCV candles,
    orderbook snapshots, and real-time WebSocket streaming.
  version: 1.0.0
servers: []
security: []
tags:
  - name: Markets
    description: Browse, search, and retrieve prediction markets across all platforms.
  - name: Market Data
    description: Prices, orderbooks, trades, and OHLCV candles for individual markets.
  - name: Events
    description: Markets grouped by real-world events (elections, sports, etc.).
  - name: Cross-Platform
    description: Find the same event across Polymarket and Kalshi.
  - name: Sports
    description: Browse prediction markets by sport and date.
  - name: Wallets
    description: 'Wallet analytics: profile, trades, positions, PnL, activity (Polymarket).'
  - name: Polymarket Native
    description: Raw Polymarket data with platform-specific fields.
  - name: Kalshi Native
    description: Raw Kalshi data with platform-specific fields.
  - name: Whales
    description: Track large trades across all prediction markets.
  - name: Webhooks
    description: Subscribe to events via HTTP POST — trades, whale alerts, price changes.
  - name: WebSocket
    description: Real-time streaming of trades, prices, and orderbook updates.
  - name: Auth
    description: Developer account management and API key authentication.
  - name: System
    description: Health checks and system statistics.
paths:
  /v1/sports/{sport}:
    get:
      tags:
        - Sports
      summary: Sports Markets
      description: >-
        Browse prediction markets for a specific sport and date.


        Returns markets from Polymarket and Kalshi, grouped by event.


        **Valid sports:** `nfl`, `nba`, `mlb`, `nhl`, `cfb` (college football),
        `cbb` (college basketball), `pga` (golf), `tennis`
      operationId: get_sports_markets_v1_sports__sport__get
      parameters:
        - name: sport
          in: path
          required: true
          schema:
            $ref: '#/components/schemas/Sport'
        - name: date
          in: query
          required: false
          schema:
            anyOf:
              - type: string
                pattern: ^\d{4}-\d{2}-\d{2}$
              - type: 'null'
            description: Date in YYYY-MM-DD format (e.g. 2026-03-31). Defaults to today.
            title: Date
          description: Date in YYYY-MM-DD format (e.g. 2026-03-31). Defaults to today.
        - name: search
          in: query
          required: false
          schema:
            anyOf:
              - type: string
              - type: 'null'
            description: Filter events by keyword (e.g. team name)
            title: Search
          description: Filter events by keyword (e.g. team name)
        - name: platform
          in: query
          required: false
          schema:
            anyOf:
              - type: string
              - type: 'null'
            description: 'Filter by platform: polymarket, kalshi'
            title: Platform
          description: 'Filter by platform: polymarket, kalshi'
      responses:
        '200':
          description: Successful Response
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/SportsResponse'
        '422':
          description: Validation Error
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/HTTPValidationError'
components:
  schemas:
    Sport:
      type: string
      enum:
        - nfl
        - nba
        - mlb
        - nhl
        - cfb
        - cbb
        - pga
        - tennis
      title: Sport
    SportsResponse:
      properties:
        markets:
          type: object
          title: Markets
        sport:
          type: string
          title: Sport
        date:
          anyOf:
            - type: string
            - type: 'null'
          title: Date
        total_events:
          type: integer
          title: Total Events
          default: 0
      type: object
      required:
        - markets
        - sport
      title: SportsResponse
    HTTPValidationError:
      properties:
        detail:
          items:
            $ref: '#/components/schemas/ValidationError'
          type: array
          title: Detail
      type: object
      title: HTTPValidationError
    ValidationError:
      properties:
        loc:
          items:
            anyOf:
              - type: string
              - type: integer
          type: array
          title: Location
        msg:
          type: string
          title: Message
        type:
          type: string
          title: Error Type
      type: object
      required:
        - loc
        - msg
        - type
      title: ValidationError

````