openapi: 3.2.0
info:
  title: Odds Widgets API
  description: 'The Odds API V1 provides sports and racing events, bookmaker odds, exchange and prediction-market order books,

    live price updates, betting opportunity snapshots, and result lookups for production integrations.'
  version: 1.0.0
  license:
    name: Proprietary
    url: https://odds-api.net
  x-workflow-examples:
  - name: positive_ev_request
    summary: Find positive EV bets for a league.
    steps:
    - GET /v1/events?sport=rugby-league&league=NRL
    - GET /v1/bets/snapshot?strategies=pos_ev
    - Use response timestamps and stake/risk controls before showing user-facing picks.
  - name: arbitrage_request
    summary: Find arbitrage opportunities across allowed bookmakers.
    steps:
    - GET /v1/bookmakers
    - GET /v1/bets/snapshot?strategies=arbitrage
    - Show execution-risk caveats; never present arbitrage as guaranteed after limits, voids, or delays.
  - name: odds_history_request
    summary: Get line movement for a market.
    steps:
    - GET /v1/events/{event_id}/odds/snapshot
    - Pick a selection_key from an odds line.
    - GET /v1/events/{event_id}/odds/history?selection_key=...
  - name: prediction_market_orderbook_request
    summary: Read and follow a curated prediction-market order book.
    steps:
    - GET /v1/events?sport=basketball&league=NBA
    - GET /v1/events/{event_id}/prediction-markets/orderbook/snapshot?providers=polymarket,kalshi&depth=3
    - Connect to the matching /stream or /ws route with since=<snapshot resume>.
  x-responsible-gambling: Do not present betting outcomes as risk-free. Always mention execution risk, stale prices, bookmaker limits, voids, delays, and jurisdictional availability in user-facing products.
  x-production-integration:
    recommended_flow:
    - Authenticate backend requests with X-API-Key.
    - Discover sports, leagues, and bookmakers before storing local filters.
    - Page sports or racing events with limit and cursor.
    - Fetch odds snapshots for initial state. Explicit bookmaker filters are complete in one response; otherwise follow bookmaker-complete pages until complete=true. Persist as_of_ts_ms, ttl_seconds, and resume.
    - Use SSE or WebSocket streams for realtime updates and reconnect with since=<last_resume>.
    - Use history endpoints for line movement and results endpoints after events finish.
    recommended_polling_intervals:
      catalog_metadata: 6-24h
      sports_events: 5-15m, or 1-5m for active leagues and near-start windows
      racing_events: 1-5m with narrow time windows
      odds_snapshots_without_streams: 60-120s, or 15-30s for priority events with strict quota controls
      betting_opportunity_snapshots: 30-120s depending on alert urgency
      results_after_start: 1-5m until settled, then back off
    stream_reconnects:
    - Snapshot first, then connect to /stream or /ws with matching filters.
    - Apply delta messages idempotently and persist the newest resume token.
    - Use heartbeat messages as liveness checks.
    - Reconnect with jittered exponential backoff and since=<last_resume>.
    - Reload the snapshot when a resync message indicates the resume token is unavailable.
    rate_limit_backoff:
    - Honor Retry-After on 429 when present.
    - Otherwise start around 2 seconds and double up to about 60 seconds with jitter.
    - Use X-RateLimit-* response headers when present to tune callers.
    - Use /usage to detect monthly API-credit quota exhaustion and stop retry loops.
    cache_strategy:
    - Cache by endpoint path, event ID, normalized filters, page cursor, and product context.
    - Respect ttl_seconds when present and always surface as_of_ts_ms.
    - Use streams to update hot caches and reload snapshots after resync or parse failure.
    - Prefer stale-while-revalidate displays with a visible timestamp.
    failure_modes:
    - 400 invalid request shape, cursor, timestamp, or filter.
    - 401 missing or invalid API key.
    - 403 key lacks plan, product, bookmaker, stream, racing, or strategy access.
    - 404 event, race, result, or selection is unavailable.
    - 429 rate limit or monthly quota exhaustion.
    - 5xx transient service failure; retry with backoff and keep last good cached data marked stale.
    - Stream close or resync; reconnect with since or reload the snapshot.
servers:
- url: https://api.odds-api.net/v1
  description: Production V1 base URL. Set ODDS_API_BASE_URL to override it in SDKs and examples.
security:
- ApiKeyAuth: []
tags:
- name: Widgets
  description: Public-safe embeddable widget feeds for approved API clients.
paths:
  /widgets/odds-ticker:
    get:
      tags:
      - Widgets
      summary: 'Widgets: Odds ticker'
      operationId: odds_ticker_widgets_odds_ticker_get
      security:
      - ApiKeyAuth: []
      parameters:
      - name: league
        in: query
        required: true
        schema:
          type: string
          minLength: 1
          title: League
        description: League filter. Use `/leagues?sport=...` to discover supported values.
      - name: bookmakers
        in: query
        required: true
        schema:
          type: string
          minLength: 1
          title: Bookmakers
        description: Comma-separated bookmaker allow-list. Use `/bookmakers` to discover supported keys.
      - name: widget_id
        in: query
        required: true
        schema:
          type: string
          minLength: 1
          maxLength: 128
          pattern: ^[A-Za-z0-9_.:-]+$
          title: Widget Id
        description: Stable widget identifier configured on the API client record.
      - name: markets
        in: query
        required: false
        schema:
          anyOf:
          - type: string
          - type: 'null'
          title: Markets
        description: Comma-separated widget market list. Supported values are moneyline, handicap, and total; aliases include h2h, 1x2, spread, and over_under.
      - name: limit
        in: query
        required: false
        schema:
          type: integer
          maximum: 50
          minimum: 1
          default: 20
          title: Limit
        description: Maximum items to return. Respect the caps returned by `/limits`.
      - name: window_hours
        in: query
        required: false
        schema:
          type: integer
          maximum: 168
          minimum: 1
          default: 48
          title: Window Hours
      responses:
        '200':
          description: Successful Response
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/WidgetOddsTickerResponse'
              examples:
                default:
                  summary: 'Widgets: Odds ticker'
                  value:
                    league: EPL
                    widget_id: homepage-ticker
                    last_updated: '2026-07-09T01:02:03Z'
                    events:
                    - league: EPL
                      event_name: Arsenal vs Chelsea
                      start_time: 1783558800
                      last_updated: '2026-07-09T01:02:03Z'
                      markets:
                      - market: moneyline 3w
                        bookmakers:
                        - label: tab
                          selections:
                          - selection: home
                            price: 2.2
                          - selection: away
                            price: 2.9
                          - selection: draw
                            price: 3.4
        '400':
          description: Invalid request parameters or body.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
        '401':
          description: Missing or invalid credentials.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
        '403':
          description: Credentials are valid but do not allow this resource.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
        '404':
          description: Resource was not found.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
        '429':
          description: Rate limit exceeded.
          headers:
            Retry-After:
              description: Seconds to wait before retrying when supplied by the limiter.
              schema:
                type: integer
                minimum: 1
            X-RateLimit-Limit:
              description: Request bucket capacity for the active limiter bucket when supplied.
              schema:
                type: integer
            X-RateLimit-Remaining:
              description: Approximate remaining requests in the active limiter bucket when supplied.
              schema:
                type: integer
                minimum: 0
            X-RateLimit-Bucket:
              description: Limiter bucket name that produced the response when supplied.
              schema:
                type: string
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/RateLimitResponse'
        '500':
          description: Unexpected server error.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
      description: Returns a small public-safe odds ticker payload for an embeddable website widget. The response is projected from the same Redis-backed main-line sports odds used by the API, but omits event IDs, raw payloads, source metadata, links, no-vig prices, fair odds, debug IDs, and team logo metadata. API keys marked `widgets_only=true` can access this route plus account routes only.
      x-rate-limit-note: Handle HTTP 429 with backoff and avoid tight polling loops.
components:
  schemas:
    WidgetEvent:
      properties:
        league:
          type: string
          title: League
        event_name:
          type: string
          title: Event Name
        start_time:
          anyOf:
          - type: integer
          - type: 'null'
          title: Start Time
        last_updated:
          type: string
          title: Last Updated
        markets:
          items:
            $ref: '#/components/schemas/WidgetMarket'
          type: array
          title: Markets
      type: object
      required:
      - league
      - event_name
      - last_updated
      title: WidgetEvent
    WidgetBookmakerOdds:
      properties:
        label:
          type: string
          title: Label
        selections:
          items:
            $ref: '#/components/schemas/WidgetSelectionPrice'
          type: array
          title: Selections
      type: object
      required:
      - label
      title: WidgetBookmakerOdds
    RateLimitResponse:
      allOf:
      - $ref: '#/components/schemas/ErrorResponse'
      description: Rate-limit response. Retry after the window or reduce polling frequency.
    WidgetOddsTickerResponse:
      properties:
        league:
          type: string
          title: League
        widget_id:
          type: string
          title: Widget Id
        last_updated:
          type: string
          title: Last Updated
        events:
          items:
            $ref: '#/components/schemas/WidgetEvent'
          type: array
          title: Events
      type: object
      required:
      - league
      - widget_id
      - last_updated
      title: WidgetOddsTickerResponse
    WidgetSelectionPrice:
      properties:
        selection:
          type: string
          title: Selection
        price:
          type: number
          title: Price
      type: object
      required:
      - selection
      - price
      title: WidgetSelectionPrice
    ErrorResponse:
      type: object
      required:
      - detail
      properties:
        detail:
          description: Human-readable error detail. FastAPI may return a string or a validation-error object.
          oneOf:
          - type: string
          - type: object
          - type: array
            items:
              type: object
        code:
          type: string
          description: Optional stable error code when provided by the endpoint.
        request_id:
          type: string
          description: Optional request identifier for support/debugging.
    WidgetMarket:
      properties:
        market:
          type: string
          title: Market
        bookmakers:
          items:
            $ref: '#/components/schemas/WidgetBookmakerOdds'
          type: array
          title: Bookmakers
      type: object
      required:
      - market
      title: WidgetMarket
  securitySchemes:
    ApiKeyAuth:
      type: apiKey
      in: header
      name: X-API-Key
      description: Send your API key in this header on every request.