--- title: "Fetch Markets" method: GET path: "/api/{exchange}/fetchMarkets" --- # Fetch Markets `GET /api/{exchange}/fetchMarkets` Fetch markets with optional filtering, search, or slug lookup. Always hits the exchange API — results reflect the live state at the time of the call. ## Path parameters - `exchange` 'polymarket' | 'kalshi' | 'kalshi-demo' | 'limitless' | 'probable' | 'baozi' | 'myriad' | 'opinion' | 'metaculus' | 'smarkets' | 'polymarket_us' | 'gemini-titan' | 'hyperliquid' | 'suibets' | 'rain' | 'hunch' | 'router', required ## Query parameters - `limit` number - `offset` number - `sort` 'volume' | 'liquidity' | 'newest' - `status` 'active' | 'inactive' | 'closed' | 'all' - `searchIn` 'title' | 'description' | 'both' - `query` string - `slug` string - `marketId` string - `outcomeId` string - `eventId` string - `page` number - `similarityThreshold` number - `sourceExchange` string - `exchange` string ## Response `200` Fetch Markets response - object - `success` boolean - `error` ErrorDetail — Structured error envelope returned inside `BaseResponse.error` and `ErrorResponse.error`. Hosted-mode endpoints populate `code`, `retryable`, and optionally `exchange` / `detail`; legacy local-mode endpoints may still return only `message`. - `message` string — Human-readable error message. - `code` 'HOSTED_TRADING_ERROR' | 'INSUFFICIENT_ESCROW_BALANCE' | 'ORDER_SIZE_TOO_SMALL' | 'INVALID_API_KEY' | 'OUTCOME_NOT_FOUND' | 'CATALOG_UNAVAILABLE' | 'BUILT_ORDER_EXPIRED' | 'INVALID_SIGNATURE' | 'NO_LIQUIDITY' | 'MISSING_WALLET_ADDRESS' | 'BAD_REQUEST' | 'AUTHENTICATION_ERROR' | 'PERMISSION_DENIED' | 'NOT_FOUND' | 'ORDER_NOT_FOUND' | 'MARKET_NOT_FOUND' | 'EVENT_NOT_FOUND' | 'RATE_LIMIT_EXCEEDED' | 'INVALID_ORDER' | 'INSUFFICIENT_FUNDS' | 'VALIDATION_ERROR' | 'NETWORK_ERROR' | 'EXCHANGE_NOT_AVAILABLE' | 'NOT_SUPPORTED' — Stable machine-readable error code. Hosted-mode errors use the `HostedTradingError` family (e.g. `INSUFFICIENT_ESCROW_BALANCE`, `BUILT_ORDER_EXPIRED`); pre-hosted local errors use the legacy family (e.g. `BAD_REQUEST`, `NOT_FOUND`). - `retryable` boolean — Hint for clients: when `true`, the same request may succeed on retry (e.g. transient network or rate-limit conditions); when `false`, the caller should not retry without modifying the request. - `exchange` string, nullable — Venue the error originated from, when known (e.g. 'polymarket', 'kalshi'). - `detail` object, nullable — Free-form hosted-mode detail blob. Shape depends on `code` — e.g. for `INSUFFICIENT_ESCROW_BALANCE` it may include `{ requested, available }`; for `ORDER_SIZE_TOO_SMALL` it may include `{ min }`; for `BUILT_ORDER_EXPIRED` it may include `{ expiry }`. - `data` UnifiedMarket[] - `marketId` string, required — The unique identifier for this market - `eventId` string — Link to parent event - `title` string, required — The market title (e.g., "Will BTC close above $100k on Dec 31?"). - `description` string, required — Long-form market description or resolution criteria. - `slug` string — URL-friendly slug for the market. - `outcomes` MarketOutcome[], required — The possible outcomes for this market. - `outcomeId` string, required — Outcome ID for trading operations (CLOB Token ID for Polymarket, Market Ticker for Kalshi) - `marketId` string — The market this outcome belongs to (set automatically when outcomes are built) - `label` string, required — Human-readable outcome label (e.g., "Yes", "No", candidate name). - `price` number, required — Probability between 0.0 and 1.0. - `priceChange24h` number — Change in price over the past 24 hours, as an absolute probability delta. - `metadata` object — Exchange-specific metadata (e.g., clobTokenId for Polymarket) - `resolutionDate` string, date-time — When the market is scheduled to resolve. Optional because some venues do not publish a cutoff for every market (e.g. Opinion categorical children) — emit `undefined` rather than coercing to epoch. - `volume24h` number, required — Trading volume over the past 24 hours (USD). - `volume` number — Total / Lifetime volume - `liquidity` number, required — Current market liquidity (USD). - `openInterest` number — Total value of outstanding contracts (USD). - `url` string, required — Canonical URL to view the market on the venue. - `image` string — Optional image URL for the market. - `category` string — Optional category label. Venue-defined — common values include "Sports", "Politics", "Crypto", "Economics", "Science", "Culture". Polymarket uses finer-grained categories like "Bitcoin", "Soccer", "Economic Policy"; Kalshi uses broader ones like "Sports" or "Mentions". - `tags` string[] — Optional list of tags. More granular than category — e.g. ["Crypto", "Crypto Prices", "Bitcoin"] or ["Politics", "Elections", "Trump"]. Tags vary by venue: Polymarket markets carry several, Kalshi typically one. - `tickSize` number — Minimum price increment (e.g., 0.01, 0.001) - `status` string — Venue-native lifecycle status (e.g. 'active', 'closed', 'archived'). - `contractAddress` string — On-chain contract / condition identifier where applicable (Polymarket conditionId, etc.). - `sourceMetadata` object — Raw venue-specific metadata not captured by first-class fields (e.g. Kalshi series_ticker / series_title from the parent event, Polymarket series). Passed through verbatim so downstream consumers can recover anything the unified shape omits. Each venue populates what it has. - `sourceExchange` string — The exchange/venue this market originates from (e.g. 'polymarket', 'kalshi'). Populated by the Router. - `yes` MarketOutcome - `outcomeId` string, required — Outcome ID for trading operations (CLOB Token ID for Polymarket, Market Ticker for Kalshi) - `marketId` string — The market this outcome belongs to (set automatically when outcomes are built) - `label` string, required — Human-readable outcome label (e.g., "Yes", "No", candidate name). - `price` number, required — Probability between 0.0 and 1.0. - `priceChange24h` number — Change in price over the past 24 hours, as an absolute probability delta. - `metadata` object — Exchange-specific metadata (e.g., clobTokenId for Polymarket) - `no` MarketOutcome - `outcomeId` string, required — Outcome ID for trading operations (CLOB Token ID for Polymarket, Market Ticker for Kalshi) - `marketId` string — The market this outcome belongs to (set automatically when outcomes are built) - `label` string, required — Human-readable outcome label (e.g., "Yes", "No", candidate name). - `price` number, required — Probability between 0.0 and 1.0. - `priceChange24h` number — Change in price over the past 24 hours, as an absolute probability delta. - `metadata` object — Exchange-specific metadata (e.g., clobTokenId for Polymarket) - `up` MarketOutcome - `outcomeId` string, required — Outcome ID for trading operations (CLOB Token ID for Polymarket, Market Ticker for Kalshi) - `marketId` string — The market this outcome belongs to (set automatically when outcomes are built) - `label` string, required — Human-readable outcome label (e.g., "Yes", "No", candidate name). - `price` number, required — Probability between 0.0 and 1.0. - `priceChange24h` number — Change in price over the past 24 hours, as an absolute probability delta. - `metadata` object — Exchange-specific metadata (e.g., clobTokenId for Polymarket) - `down` MarketOutcome - `outcomeId` string, required — Outcome ID for trading operations (CLOB Token ID for Polymarket, Market Ticker for Kalshi) - `marketId` string — The market this outcome belongs to (set automatically when outcomes are built) - `label` string, required — Human-readable outcome label (e.g., "Yes", "No", candidate name). - `price` number, required — Probability between 0.0 and 1.0. - `priceChange24h` number — Change in price over the past 24 hours, as an absolute probability delta. - `metadata` object — Exchange-specific metadata (e.g., clobTokenId for Polymarket) --- [API](https://skmtc.net/pmxt-dev/apis/pmxt-hosted-api.md) · [All operations](https://skmtc.net/pmxt-dev/apis/pmxt-hosted-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/pmxt-dev/pmxt-hosted-api/versions/da5293255d19/schema)