> ## Documentation Index > Fetch the complete documentation index at: https://docs.solanatracker.io/llms.txt > Use this file to discover all available pages before exploring further. # Multi-series OHLCV for grouped Polymarket event > Returns one candle series per market in a grouped Polymarket event (e.g. each World Cup country option). Each series includes groupItemTitle, market title, and OHLCV bars normalized to Yes-token prices. ## OpenAPI ````yaml /prediction-markets/openapi.json get /v1/events/{event_id}/candlesticks openapi: 3.1.0 info: title: Prediction Market API (Beta) description: >- Unified **beta** prediction market API for Kalshi and Polymarket — markets, events, full historical trades and candlesticks, orderbooks, crypto up/down windows, and Polymarket wallet analytics. Read/market-data only. **Auth:** pass your Data API key in the `x-api-key` header. **Conventions:** response bodies use camelCase. Query params are snake_case (camelCase aliases accepted where noted). **Caching:** SWR endpoints may set `X-Cache` (`HIT` | `HIT-STALE` | `MISS`). Busy backends may return `503` with `SERVICE_BUSY`. **Realtime:** join `pm:*` rooms on `wss://datastream.solanatracker.io/{apiKey}` (same Datastream hub as other products — see Datastream → Prediction Markets). license: name: '' version: 0.1.0 servers: - url: https://prediction-market-api.solanatracker.io description: Public beta security: - apiKey: [] tags: - name: Exchange description: Exchange status - name: Events description: >- Cross-exchange event groupings (Kalshi event_ticker, Polymarket Gamma grouped/negRisk events). Includes metadata: image, icon, description, tags, and nested markets with groupItemTitle. - name: Crypto description: >- Polymarket crypto up/down (Chainlink) Price to Beat, final price, chart history, and series windows. - name: Meta description: Categories, series, sports, live data - name: Markets description: Market data, orderbooks, candles - name: Trades description: Trade feeds - name: Accounts description: Polymarket wallet analytics (FIFO PnL) - name: Leaderboard description: Top wallet PnL rankings (Polymarket; Kalshi has no public wallets) - name: Stats description: Platform statistics paths: /v1/events/{event_id}/candlesticks: get: tags: - Events summary: Multi-series OHLCV for grouped Polymarket event description: >- Returns one candle series per market in a grouped Polymarket event (e.g. each World Cup country option). Each series includes groupItemTitle, market title, and OHLCV bars normalized to Yes-token prices. operationId: get_event_candlesticks_path parameters: - name: event_id in: path description: Polymarket id (30615), POLY-30615, or slug required: true schema: type: string - name: exchange in: query description: Force exchange lookup; auto-detect if omitted required: false schema: type: string - name: period_interval in: query description: 1m, 1h, or 1d (default 1h) required: false schema: type: string - name: start_ts in: query description: Range start (unix s or ms) required: false schema: type: string - name: end_ts in: query description: Range end required: false schema: type: string - name: limit in: query description: Max candles per series (default 200, max 2000) required: false schema: type: integer format: int64 minimum: 0 - name: cursor in: query description: Pagination cursor for older bars required: false schema: type: string - name: status in: query description: 'Market filter: all (default), active, closed, or inactive' required: false schema: type: string responses: '200': description: Per-option candle series content: application/json: schema: $ref: '#/components/schemas/EventCandlesticksResponse' '404': description: Not found content: application/json: schema: $ref: '#/components/schemas/ApiErrorBody' '500': description: Internal server error content: application/json: schema: $ref: '#/components/schemas/ApiErrorBody' components: schemas: EventCandlesticksResponse: type: object description: >- Multi-series OHLCV for a Polymarket grouped event (e.g. World Cup Winner options). required: - eventId - exchange - title - periodInterval - series properties: eventId: type: string description: Polymarket Gamma event id (numeric string). eventSlug: type: - string - 'null' description: URL slug for the parent event. exchange: $ref: '#/components/schemas/Exchange' nextCursor: type: - string - 'null' periodInterval: type: string description: 'Candle period: 1m, 1h, or 1d.' series: type: array items: $ref: '#/components/schemas/EventCandlestickSeries' description: One series per market in the group. title: type: string description: Parent event title. ApiErrorBody: type: object description: Standard API error response envelope. required: - error - code properties: code: type: integer format: int32 description: HTTP status code (duplicated for convenience). minimum: 0 error: type: string errorCode: type: - string - 'null' description: >- Stable machine-readable code: RATE_LIMITED, SERVICE_BUSY, BAD_REQUEST, NOT_FOUND, INTERNAL. Exchange: type: string enum: - polymarket - kalshi EventCandlestickSeries: type: object description: One market's candle series within a grouped Polymarket event. required: - marketId - title - status - candles properties: candles: type: array items: $ref: '#/components/schemas/Candlestick' description: OHLCV bars for this market's primary Yes outcome. gammaMarketId: type: - string - 'null' description: Polymarket Gamma numeric market id. groupItemTitle: type: - string - 'null' description: Short label within the parent event (e.g. "USA", "France"). marketId: type: string description: >- Polymarket condition_id or internal market id used for chart queries. status: type: string description: 'Market status: "active", "closed", or "inactive".' title: type: string description: Full market question/title. Candlestick: type: object description: A single OHLCV candlestick bar. required: - timestamp - open - high - low - close - volume - tradeCount - ticker - exchange - periodInterval properties: close: type: number format: double exchange: type: string high: type: number format: double low: type: number format: double open: type: number format: double periodInterval: type: string ticker: type: string timestamp: type: string description: Start of the candle period (ISO-8601 or unix seconds). tradeCount: type: integer format: int64 minimum: 0 volume: type: number format: double securitySchemes: apiKey: type: apiKey in: header name: x-api-key description: Solana Tracker Data API key ````