{ "openapi": "3.0.1", "info": { "title": "Prediction Markets Scraper – Kalshi & Polymarket", "description": "Kalshi and Polymarket prediction market data in one schema: yes/no probabilities, bid/ask, last price, 24h change, volume, liquidity, open interest, close time and results. Filter by keyword, category, volume and close date; only-changed mode for monitoring.", "version": "0.1", "x-build-id": "MtwChcFLTdr5P3gIU" }, "servers": [ { "url": "https://api.apify.com/v2" } ], "paths": { "/acts/anxuanng~prediction-markets-scraper/run-sync-get-dataset-items": { "post": { "operationId": "run-sync-get-dataset-items-anxuanng-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": { "$ref": "#/components/schemas/inputSchema" } } } }, "parameters": [ { "name": "token", "in": "query", "required": true, "schema": { "type": "string" }, "description": "Enter your Apify token here" } ], "responses": { "200": { "description": "OK" } } } }, "/acts/anxuanng~prediction-markets-scraper/runs": { "post": { "operationId": "runs-sync-anxuanng-prediction-markets-scraper", "x-openai-isConsequential": false, "summary": "Executes an Actor and returns information about the initiated run in response.", "tags": [ "Run Actor" ], "requestBody": { "required": true, "content": { "application/json": { "schema": { "$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": { "$ref": "#/components/schemas/runsResponseSchema" } } } } } } }, "/acts/anxuanng~prediction-markets-scraper/run-sync": { "post": { "operationId": "run-sync-anxuanng-prediction-markets-scraper", "x-openai-isConsequential": false, "summary": "Executes an Actor, waits for completion, and returns the OUTPUT from Key-value store in response.", "tags": [ "Run Actor" ], "requestBody": { "required": true, "content": { "application/json": { "schema": { "$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": { "sources": { "title": "Exchanges", "type": "array", "description": "Which prediction markets to read. Rows from both are returned in the same schema.", "items": { "type": "string", "enum": [ "kalshi", "polymarket" ], "enumTitles": [ "Kalshi", "Polymarket" ] }, "default": [ "kalshi", "polymarket" ] }, "search": { "title": "Search", "type": "string", "description": "Keep markets whose event title, question or option label contains this phrase (case-insensitive), e.g. 'bitcoin', 'fed decision', 'world cup'. On Polymarket the phrase is matched against event titles. Empty keeps all." }, "categories": { "title": "Categories", "type": "array", "description": "Keep markets in any of these categories or tags (case-insensitive). Kalshi categories: Politics, Elections, Economics, Financials, Crypto, Sports, Climate and Weather, Science and Technology, Entertainment, Companies. Polymarket tags: politics, sports, crypto, finance, economy, geopolitics, tech, pop-culture, weather. Empty keeps all.", "items": { "type": "string" } }, "status": { "title": "Market status", "enum": [ "open", "closed", "all" ], "type": "string", "description": "'Open' returns markets trading now. 'Closed' returns markets that stopped trading, with the result once resolved, newest first. 'All' returns both.", "default": "open" }, "minVolume": { "title": "Minimum volume (USD)", "minimum": 0, "type": "integer", "description": "Skip markets with less total traded volume than this. Kalshi volume is contracts traded; each pays $1, which is how Kalshi shows dollar volume. Try 1000 to skip dead markets." }, "closesWithinDays": { "title": "Closes within (days)", "minimum": 1, "maximum": 3650, "type": "integer", "description": "Open markets: keep only those closing in the next N days. Closed markets: keep only those that closed in the last N days. When empty, closed markets are read from the last 30 days." }, "onlyChanged": { "title": "Only new or changed markets", "type": "boolean", "description": "Return a market only if you have not received it before, or its price, volume, status or result changed since you last received it. Turn this on for scheduled monitoring so you pay only for movement.", "default": false }, "maxItems": { "title": "Max markets", "minimum": 1, "maximum": 100000, "type": "integer", "description": "Stop after this many markets across both exchanges; rows alternate between exchanges. You are only charged per market delivered.", "default": 1000 } } }, "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 } } } } } } } } } }