{ "openapi": "3.0.1", "info": { "title": "Prediction Markets Scraper - Kalshi & Polymarket Odds", "description": "Scrape real-time prediction market odds from Kalshi and Polymarket: current prices, volumes, order book depth, and cross-platform price gaps when the same question trades on both exchanges.", "version": "0.1", "x-build-id": "rZnVJbuxavPgG7C9b" }, "servers": [ { "url": "https://api.apify.com/v2" } ], "paths": { "/acts/punkrecordsdata~prediction-markets-scraper/run-sync-get-dataset-items": { "post": { "operationId": "run-sync-get-dataset-items-punkrecordsdata-prediction-markets-scraper", "x-openai-isConsequential": false, "summary": "Executes an Actor, waits for its completion, and returns Actor's dataset items in response.", "tags": [ "Run Actor" ], "requestBody": { "required": true, "content": { "application/json": { "schema": { "$ref": "#/components/schemas/inputSchema" } } } }, "parameters": [ { "name": "token", "in": "query", "required": true, "schema": { "type": "string" }, "description": "Enter your Apify token here" } ], "responses": { "200": { "description": "OK" } } } }, "/acts/punkrecordsdata~prediction-markets-scraper/runs": { "post": { "operationId": "runs-sync-punkrecordsdata-prediction-markets-scraper", "x-openai-isConsequential": false, "summary": "Executes an Actor and returns information about the initiated run in response.", "tags": [ "Run Actor" ], "requestBody": { "required": true, "content": { "application/json": { "schema": { "$ref": "#/components/schemas/inputSchema" } } } }, "parameters": [ { "name": "token", "in": "query", "required": true, "schema": { "type": "string" }, "description": "Enter your Apify token here" } ], "responses": { "200": { "description": "OK", "content": { "application/json": { "schema": { "$ref": "#/components/schemas/runsResponseSchema" } } } } } } }, "/acts/punkrecordsdata~prediction-markets-scraper/run-sync": { "post": { "operationId": "run-sync-punkrecordsdata-prediction-markets-scraper", "x-openai-isConsequential": false, "summary": "Executes an Actor, waits for completion, and returns the OUTPUT from Key-value store in response.", "tags": [ "Run Actor" ], "requestBody": { "required": true, "content": { "application/json": { "schema": { "$ref": "#/components/schemas/inputSchema" } } } }, "parameters": [ { "name": "token", "in": "query", "required": true, "schema": { "type": "string" }, "description": "Enter your Apify token here" } ], "responses": { "200": { "description": "OK" } } } } }, "components": { "schemas": { "inputSchema": { "type": "object", "properties": { "platforms": { "title": "Platforms", "uniqueItems": true, "type": "array", "description": "Which prediction market platforms to scrape. Valid values: \"kalshi\", \"polymarket\". Leave both (default) for cross-platform matching.", "default": [ "kalshi", "polymarket" ], "items": { "type": "string" } }, "status": { "title": "Market status", "enum": [ "open", "closed", "settled", "all" ], "type": "string", "description": "Which markets to collect. Open = currently tradable.", "default": "open" }, "searchTerms": { "title": "Search terms", "type": "array", "description": "Optional. Only keep markets whose question contains any of these phrases (case-insensitive). Leave empty for all markets. Examples: \"federal reserve\", \"bitcoin\", \"world series\".", "items": { "type": "string" } }, "maxPerPlatform": { "title": "Max markets per platform", "minimum": 1, "maximum": 5000, "type": "integer", "description": "Maximum number of markets to fetch from each selected platform. Larger values improve cross-platform match coverage (Kalshi pages from oldest events first, so its liquid markets sit deeper in the listing).", "default": 300 }, "liquidOnly": { "title": "Liquid markets only", "type": "boolean", "description": "Drop markets with zero volume (stale or never-traded ticks).", "default": false }, "maxItems": { "title": "Max Items", "minimum": 1, "maximum": 1000000, "type": "integer", "description": "Maximum number of market-summary rows to deliver. Free users: limited to 10 (preview). Paid users: optional, max 1,000,000." }, "includeOrderBook": { "title": "Order book depth", "type": "boolean", "description": "Top ten bid/ask price levels per market (Kalshi orderbook + Polymarket CLOB book). Billed per market as order-book-record.", "default": false }, "includeCrossMatch": { "title": "Cross-platform match", "type": "boolean", "description": "Find the same question listed on both Kalshi and Polymarket (requires both platforms selected) and output the price gap between them. With no search term it deep-scans both platforms to locate overlaps. Billed per match as cross-match-record.", "default": true }, "includePriceHistory": { "title": "Price history", "type": "boolean", "description": "Historical price time series for the market (Kalshi candlesticks, Polymarket CLOB price history). Useful for charting or backtesting. Billed per market as price-history-record.", "default": false }, "includeTrades": { "title": "Recent trades", "type": "boolean", "description": "The last individual trades for the market: side, price, size, timestamp. Billed per market as recent-trades-record.", "default": false }, "crossMatchDepth": { "title": "Cross-match scan depth", "minimum": 500, "maximum": 10000, "type": "integer", "description": "How many markets per platform to scan when cross-matching without a search term. Larger depth finds more matches but adds requests (Kalshi and Polymarket keep overlaps thousands of markets into their listings).", "default": 3000 } } }, "runsResponseSchema": { "type": "object", "properties": { "data": { "type": "object", "properties": { "id": { "type": "string" }, "actId": { "type": "string" }, "userId": { "type": "string" }, "startedAt": { "type": "string", "format": "date-time", "example": "2025-01-08T00:00:00.000Z" }, "finishedAt": { "type": "string", "format": "date-time", "example": "2025-01-08T00:00:00.000Z" }, "status": { "type": "string", "example": "READY" }, "meta": { "type": "object", "properties": { "origin": { "type": "string", "example": "API" }, "userAgent": { "type": "string" } } }, "stats": { "type": "object", "properties": { "inputBodyLen": { "type": "integer", "example": 2000 }, "rebootCount": { "type": "integer", "example": 0 }, "restartCount": { "type": "integer", "example": 0 }, "resurrectCount": { "type": "integer", "example": 0 }, "computeUnits": { "type": "integer", "example": 0 } } }, "options": { "type": "object", "properties": { "build": { "type": "string", "example": "latest" }, "timeoutSecs": { "type": "integer", "example": 300 }, "memoryMbytes": { "type": "integer", "example": 1024 }, "diskMbytes": { "type": "integer", "example": 2048 } } }, "buildId": { "type": "string" }, "defaultKeyValueStoreId": { "type": "string" }, "defaultDatasetId": { "type": "string" }, "defaultRequestQueueId": { "type": "string" }, "buildNumber": { "type": "string", "example": "1.0.0" }, "containerUrl": { "type": "string" }, "usage": { "type": "object", "properties": { "ACTOR_COMPUTE_UNITS": { "type": "integer", "example": 0 }, "DATASET_READS": { "type": "integer", "example": 0 }, "DATASET_WRITES": { "type": "integer", "example": 0 }, "KEY_VALUE_STORE_READS": { "type": "integer", "example": 0 }, "KEY_VALUE_STORE_WRITES": { "type": "integer", "example": 1 }, "KEY_VALUE_STORE_LISTS": { "type": "integer", "example": 0 }, "REQUEST_QUEUE_READS": { "type": "integer", "example": 0 }, "REQUEST_QUEUE_WRITES": { "type": "integer", "example": 0 }, "DATA_TRANSFER_INTERNAL_GBYTES": { "type": "integer", "example": 0 }, "DATA_TRANSFER_EXTERNAL_GBYTES": { "type": "integer", "example": 0 }, "PROXY_RESIDENTIAL_TRANSFER_GBYTES": { "type": "integer", "example": 0 }, "PROXY_SERPS": { "type": "integer", "example": 0 } } }, "usageTotalUsd": { "type": "number", "example": 0.00005 }, "usageUsd": { "type": "object", "properties": { "ACTOR_COMPUTE_UNITS": { "type": "integer", "example": 0 }, "DATASET_READS": { "type": "integer", "example": 0 }, "DATASET_WRITES": { "type": "integer", "example": 0 }, "KEY_VALUE_STORE_READS": { "type": "integer", "example": 0 }, "KEY_VALUE_STORE_WRITES": { "type": "number", "example": 0.00005 }, "KEY_VALUE_STORE_LISTS": { "type": "integer", "example": 0 }, "REQUEST_QUEUE_READS": { "type": "integer", "example": 0 }, "REQUEST_QUEUE_WRITES": { "type": "integer", "example": 0 }, "DATA_TRANSFER_INTERNAL_GBYTES": { "type": "integer", "example": 0 }, "DATA_TRANSFER_EXTERNAL_GBYTES": { "type": "integer", "example": 0 }, "PROXY_RESIDENTIAL_TRANSFER_GBYTES": { "type": "integer", "example": 0 }, "PROXY_SERPS": { "type": "integer", "example": 0 } } } } } } } } } }