{ "openapi": "3.0.1", "info": { "title": "Prediction markets - Kalshi + Polymarket prices (public APIs)", "description": "Current prices, volume and liquidity for open Kalshi and Polymarket markets, normalised to one row per market (yes/no price 0-1, event, category, close date, URL). Filter by venue, status, text, category or Kalshi series. Public read-only APIs; market data only, no trading.", "version": "0.1", "x-build-id": "PYLrsaPwELMicKqsx" }, "servers": [ { "url": "https://api.apify.com/v2" } ], "paths": { "/acts/retrainmap~prediction-markets/run-sync-get-dataset-items": { "post": { "operationId": "run-sync-get-dataset-items-retrainmap-prediction-markets", "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": { "$ref": "#/components/schemas/inputSchema" } } } }, "parameters": [ { "name": "token", "in": "query", "required": true, "schema": { "type": "string" }, "description": "Enter your Apify token here" } ], "responses": { "200": { "description": "OK" } } } }, "/acts/retrainmap~prediction-markets/runs": { "post": { "operationId": "runs-sync-retrainmap-prediction-markets", "x-openai-isConsequential": false, "summary": "Executes an Actor and returns information about the initiated run in response.", "tags": [ "Run Actor" ], "requestBody": { "required": true, "content": { "application/json": { "schema": { "$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": { "$ref": "#/components/schemas/runsResponseSchema" } } } } } } }, "/acts/retrainmap~prediction-markets/run-sync": { "post": { "operationId": "run-sync-retrainmap-prediction-markets", "x-openai-isConsequential": false, "summary": "Executes an Actor, waits for completion, and returns the OUTPUT from Key-value store in response.", "tags": [ "Run Actor" ], "requestBody": { "required": true, "content": { "application/json": { "schema": { "$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": { "source": { "title": "Venue", "enum": [ "both", "kalshi", "polymarket" ], "type": "string", "description": "Which venue(s) to read. With `both`, the row budget is split: Kalshi gets the first half, Polymarket the rest (and whatever Kalshi did not use).", "default": "both" }, "status": { "title": "Market status", "enum": [ "open", "closed", "settled", "all" ], "type": "string", "description": "`open` = trading now (Kalshi status=open and market status active; Polymarket active and not closed). `closed` / `settled` use the venues' own filters (Polymarket has a single closed flag for both). `all` = no status filter.", "default": "open" }, "search": { "title": "Search text", "type": "string", "description": "Optional. Kalshi: case-insensitive substring match on the event title, market title and subtitle (pages of events are scanned, up to 60 pages). Polymarket: passed to the venue's own search endpoint (/public-search)." }, "category": { "title": "Category", "type": "string", "description": "Optional, case-insensitive substring. Kalshi: the event category (Economics, Politics, Sports, Entertainment, Elections, Climate and Weather, Science and Technology, Financials, Companies, Health, World). Polymarket: any tag label/slug or series (e.g. politics, crypto, fed-rates)." }, "series_ticker": { "title": "Kalshi series ticker", "type": "string", "description": "Optional, Kalshi only (e.g. KXFED, KXHIGHNY). Applied server-side; when set, Polymarket is skipped." }, "max_records": { "title": "Maximum records", "minimum": 1, "maximum": 20000, "type": "integer", "description": "Stop after this many market rows have been written.", "default": 300 }, "request_interval_ms": { "title": "Minimum interval between requests (ms)", "minimum": 250, "maximum": 10000, "type": "integer", "description": "Politeness delay towards the venues' APIs (floor 250 ms). A default run needs about two requests.", "default": 500 }, "contact_email": { "title": "Contact e-mail (User-Agent and From: header)", "type": "string", "description": "Sent in the User-Agent and in the standard From: request header so the venues can reach the operator (RFC 9110 s10.1.2).", "default": "info@steelyardclinical.com" } } }, "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 } } } } } } } } } }