> ## Documentation Index > Fetch the complete documentation index at: https://docs.therundown.io/llms.txt > Use this file to discover all available pages before exploring further. # Get opening prices for an event's markets ## OpenAPI ````yaml get /api/v2/events/{eventID}/markets/opening openapi: 3.1.0 info: title: TheRundown Sports API version: 2.0.0 description: > **Resolve the event first.** Ambiguous date, team, player, or timezone? The agent asks instead of guessing. **Every price carries evidence.** Event, market, affiliate ID, line, and the price update time. A fetch time is not freshness. **Missing stays missing.** No remembered odds, no synthetic prices, no filled gaps. **IDs come from the API.** Sports, markets, and affiliates are discovered at runtime. Retired affiliates stay out. Real-time and historical sports betting data, odds, lines, and statistics across major North American and international sports leagues. ## Authentication All endpoints (except `/sports` and `/affiliates`) require authentication. Send your API key from a private server-side environment variable in the `X-TheRundown-Key` header. The query-key security scheme is retained for compatibility with existing integrations and deprecated for new integrations; do not put keys in URLs, prompts, browser bundles, or public code. ## Off-the-Board Sentinel Value The value **0.0001** indicates a line is "off the board" — the sportsbook has temporarily removed pricing (e.g., pending injury news). This is NOT an error. Display as "Off Board" or "N/A" in your UI. ## Rate Limiting Requests are rate-limited per API key tier. Check response headers for current limits. ## Data Updates - Live odds update in real-time during games - Use delta endpoints for efficient polling of changes - WebSocket connections available for streaming updates ## V1 vs V2 V2 endpoints use market-based data structures (market_id, participants, line prices). V1 endpoints use legacy line-based structures (moneyline, spread, total objects). V2 is recommended for new integrations. contact: name: TheRundown API Support url: https://therundown.io email: support@therundown.io termsOfService: https://therundown.io/terms servers: - url: https://therundown.io description: Production security: - ApiKeyHeader: [] tags: - name: V2 Sports description: Sport listings, dates, and teams (V2) - name: V2 Events description: Events with market-based odds (V2) - name: V2 Markets description: Market definitions, odds, deltas, and history (V2) - name: V2 Futures description: >- Futures/outright competition events — championship and tournament-winner boards (V2, early access) - name: V2 Teams description: Team data, players, and stats (V2) - name: V2 Players description: Player data (V2) - name: V2 Stats description: Team and player statistics (V2) - name: V2 WebSocket description: Real-time streaming via WebSocket (V2) - name: V2 Reference description: Reference data — affiliates, sportsbooks, season types (V2) - name: V1 Events description: Events with line-based odds (V1 legacy) - name: V1 Lines description: Moneyline, spread, total, best-line endpoints (V1 legacy) - name: V1 Sports description: Sport listings, dates, events, schedules (V1 legacy) - name: V1 Delta description: Delta/change feeds (V1 legacy) - name: V1 Reference description: Reference data (V1 legacy) - name: V1 WebSocket description: Real-time streaming via WebSocket (V1 legacy) externalDocs: description: Build with AI guide url: https://therundown.io/build-with-ai paths: /api/v2/events/{eventID}/markets/opening: get: tags: - V2 Markets summary: Get opening prices for an event's markets operationId: v2GetOpeningPricesByEvent parameters: - $ref: '#/components/parameters/EventIDPath' - name: market_ids in: query schema: type: string description: Comma-separated market IDs - $ref: '#/components/parameters/AffiliateIDsQuery' responses: '200': description: Opening prices content: application/json: schema: $ref: '#/components/schemas/OpeningPricesResponse' example: meta: event_id: 09bfa53f8484a63e584398545c035932 count: 2 markets: '1': market_id: 1 market_name: moneyline lines: '45001:': participant_id: 11 participant_type: TYPE_TEAM participant_name: Atlanta Hawks prices: '19': price: '-120' timestamp: '2026-02-10T14:00:00Z' '23': price: '-115' timestamp: '2026-02-10T14:05:00Z' components: parameters: EventIDPath: name: eventID in: path required: true schema: type: string description: >- Canonical V2 event ID from the `event_id` field returned by event endpoints AffiliateIDsQuery: name: affiliate_ids in: query schema: type: string description: > Comma-separated sportsbook/affiliate IDs to filter. Common values include DraftKings (19), FanDuel (23), BetMGM (22), BookMaker (7), BetCRIS (9), Pinnacle (3), Polymarket US (31), Circa Sports (32), Bet105 (33), and Heritage Sports (34). Availability varies by sport and market. On V2 event endpoints (`/api/v2/sports/{sportID}/events/{date}`, `/api/v2/events/{eventID}`, and their openers/closing siblings), `affiliate_ids=0` is a scores-only sentinel: the response keeps events, scores, and status and omits markets and price objects. Other endpoints that share this parameter treat `affiliate_ids` as a sportsbook filter only. schemas: OpeningPricesResponse: type: object properties: meta: type: object properties: event_id: type: string count: type: integer markets: type: object description: Keyed by market ID additionalProperties: type: object properties: market_id: type: integer format: int64 market_name: type: string lines: type: object description: Keyed by participant_id:line composite key additionalProperties: type: object properties: participant_id: type: integer participant_type: type: string enum: - TYPE_TEAM - TYPE_PLAYER - TYPE_RESULT participant_name: type: string prices: type: object description: Keyed by affiliate ID additionalProperties: type: object properties: price: type: string timestamp: type: string format: date-time securitySchemes: ApiKeyHeader: type: apiKey in: header name: X-TheRundown-Key description: Recommended API key request header for new integrations ```` This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.