> ## Documentation Index > Fetch the complete documentation index at: https://docs.polyrouter.io/llms.txt > Use this file to discover all available pages before exploring further. # Get series by ID > Fetch a single series by its ID ## OpenAPI ````yaml openapi.json get /series/{id} openapi: 3.1.0 info: title: Polyrouter API version: 2.0.0 description: >- Unified API for prediction market platforms (Polymarket, Kalshi, Limitless, Manifold) contact: name: Polyrouter url: https://polyrouter.io servers: - url: https://api-v2.polyrouter.io description: Production security: - apiKey: [] tags: - name: Health description: Health check and API info - name: Markets description: Prediction market operations - name: Events description: Event operations - name: Series description: Series operations - name: Platforms description: Platform information - name: Search description: Search across platforms - name: Trades description: Historical trades data - name: Orderbook description: Orderbook data (real-time and historical) - name: Sports description: Sports betting markets - games, awards, futures, and league info - name: Profile description: User profiles, trading metrics, and trade history paths: /series/{id}: get: tags: - Series summary: Get series by ID description: Fetch a single series by its ID operationId: getSeriesById parameters: - schema: type: string example: KXELONMARS-99 required: true name: id in: path - schema: type: string enum: - polymarket - kalshi description: >- Specify platform to search (only polymarket and kalshi support series) required: false name: platform in: query - schema: type: string enum: - 'true' - 'false' description: Include raw platform response data required: false name: include_raw in: query - schema: type: string enum: - 'true' - 'false' description: Include nested events in series required: false name: include_nested in: query responses: '200': description: Series details content: application/json: schema: $ref: '#/components/schemas/SeriesResponse' '404': description: Series not found content: application/json: schema: $ref: '#/components/schemas/Error' security: - apiKey: [] components: schemas: SeriesResponse: type: object properties: pagination: $ref: '#/components/schemas/Pagination' series: type: array items: $ref: '#/components/schemas/Series' meta: type: object properties: request_time: type: number cache_hit: type: boolean data_freshness: type: string required: - request_time - cache_hit - data_freshness required: - pagination - series - meta Error: type: object properties: error: type: object properties: code: type: string example: NOT_FOUND message: type: string example: Resource not found timestamp: type: string format: date-time example: '2025-01-01T00:00:00.000Z' required: - code - message - timestamp required: - error Pagination: type: object properties: total: type: number example: 50 limit: type: number example: 50 has_more: type: boolean example: true next_cursor: type: string nullable: true example: WzMsW1swLDEsM11dXQ required: - total - limit - has_more - next_cursor Series: type: object properties: id: type: string example: '1' platform: type: string example: polymarket platform_id: type: string title: type: string example: NFL 2024 Season slug: type: string description: type: string image_url: type: string category: type: string tags: type: array items: type: string event_count: type: number market_count: type: number total_volume: type: number last_synced_at: type: string events: type: array items: $ref: '#/components/schemas/Event' required: - id - platform - platform_id - title - last_synced_at Event: type: object properties: id: type: string example: '4690' platform: type: string example: polymarket platform_id: type: string series_id: type: string title: type: string example: US Presidential Election 2024 slug: type: string description: type: string image_url: type: string resolution_source_url: type: string event_start_at: type: string event_end_at: type: string market_count: type: number example: 5 total_volume: type: number last_synced_at: type: string markets: type: array items: $ref: '#/components/schemas/Market' required: - id - platform - platform_id - title - last_synced_at Market: type: object properties: id: type: string example: KXELONMARS-99 platform: type: string example: kalshi platform_id: type: string example: KXELONMARS-99 event_id: type: string example: KXELONMARS-99 event_name: type: string example: Will Elon Musk visit Mars? event_slug: type: string nullable: true example: elon-musk-mars series_id: type: string slug: type: string example: kxelonmars-99 market_slug: type: string example: kxelonmars-99 title: type: string example: Will Elon Musk visit Mars before Aug 1, 2099? description: type: string category: type: string example: Science subcategory: type: string nullable: true tags: type: array nullable: true items: type: string status: type: string enum: - open - paused - resolved - cancelled example: open market_type: type: string enum: - binary - categorical - scalar example: binary outcomes: type: array items: $ref: '#/components/schemas/Outcome' current_prices: type: object additionalProperties: $ref: '#/components/schemas/PriceDetail' volume_24h: type: number nullable: true example: 10000 volume_7d: type: number nullable: true example: 50000 volume_total: type: number nullable: true example: 500000 liquidity: type: number nullable: true liquidity_score: type: number open_interest: type: number nullable: true unique_traders: type: number nullable: true fee_rate: type: number nullable: true trading_fee: type: number nullable: true withdrawal_fee: type: number nullable: true source_url: type: string example: https://kalshi.com/markets/kxelonmars-99 image_url: type: string created_at: type: string trading_start_at: type: string nullable: true trading_end_at: type: string resolution_date: type: string resolved_at: type: string nullable: true resolution_criteria: type: string nullable: true resolution_source: type: string nullable: true price_24h_changes: type: object nullable: true additionalProperties: type: number price_7d_changes: type: object nullable: true additionalProperties: type: number last_trades: type: object nullable: true additionalProperties: $ref: '#/components/schemas/LastTradeInfo' metadata: $ref: '#/components/schemas/MarketMetadata' last_synced_at: type: string required: - id - platform - platform_id - title - status - market_type - outcomes - current_prices - last_synced_at Outcome: type: object properties: id: type: string example: 'yes' name: type: string example: 'Yes' required: - id - name PriceDetail: type: object properties: price: type: number example: 0.65 bid: type: number example: 0.64 ask: type: number example: 0.66 required: - price LastTradeInfo: type: object properties: price: type: number example: 0.65 timestamp: type: string example: '2025-01-01T00:00:00.000Z' size: type: number example: 100 required: - price - timestamp - size MarketMetadata: type: object properties: conditionId: type: string nullable: true ammType: type: string nullable: true marketType: type: string nullable: true formatType: type: string nullable: true competitive: type: number example: 0 score: type: number example: 0 bestBid: type: number example: 0.64 bestAsk: type: number example: 0.66 spread: type: number example: 0.02 clobTokenIds: type: array nullable: true items: type: string securitySchemes: apiKey: type: apiKey in: header name: X-API-Key description: API key for authentication ````