> ## Documentation Index > Fetch the complete documentation index at: https://docs.parlayx.com/llms.txt > Use this file to discover all available pages before exploring further. # List Markets > Returns the open Limitless markets and the identifiers an order needs: the market slug and each outcome's token id. ## OpenAPI ````yaml /openapi/v1.json get /v1/limitless/markets openapi: 3.0.0 info: title: ParlayX API version: 1.0.0 description: Aggregated prediction-market trading API servers: - url: https://api.parlayx.com security: [] tags: - name: Authentication description: Confirm your signing and read the server clock. - name: Discovery description: Browse sports, competitions, events, and markets. - name: Polymarket description: Submit and manage orders on Polymarket outcomes. - name: Kalshi description: Submit and manage orders on Kalshi markets. - name: ProphetX description: Submit and manage orders on ProphetX strikes. - name: Limitless description: Discover and trade Limitless markets. paths: /v1/limitless/markets: get: tags: - Limitless summary: List Markets description: >- Returns the open Limitless markets and the identifiers an order needs: the market slug and each outcome's token id. operationId: listLimitlessMarkets parameters: - name: PX-Key-Id in: header required: true schema: type: string description: The key id issued for your signing keypair. - name: PX-Timestamp in: header required: true schema: type: string description: >- Unix seconds at signing, valid within 30 seconds of the server clock. - name: PX-Signature in: header required: true schema: type: string description: Ed25519 signature of the request - name: PX-Content-Sha256 in: header required: true schema: type: string description: >- Hex SHA-256 of the request body, or the SHA-256 of the empty string when there is no body. - schema: type: string minLength: 1 description: >- Return only this market, resolving a slug you already hold to its outcome token ids. A slug the venue does not know returns no markets rather than an error. example: doge-up-or-down-daily-1787500800 required: false name: slug in: query - schema: type: string minLength: 1 description: >- Opaque cursor from a previous response's `nextPageToken`. Omit to fetch the first page. Not accepted together with `slug`. required: false name: pageToken in: query responses: '200': description: A page of markets content: application/json: schema: $ref: '#/components/schemas/ListLimitlessMarketsResponse' '400': description: Malformed query content: application/json: schema: $ref: '#/components/schemas/ApiError' '401': description: The request was not authenticated content: application/json: schema: $ref: '#/components/schemas/AuthError' '403': description: The key is not permitted to perform this action content: application/json: schema: $ref: '#/components/schemas/AuthError' '429': description: >- The organization has exceeded its request rate; retry after the Retry-After interval content: application/json: schema: $ref: '#/components/schemas/AuthError' '500': description: Internal error content: application/json: schema: $ref: '#/components/schemas/ApiError' '503': description: The venue catalog could not be read; retry content: application/json: schema: oneOf: - $ref: '#/components/schemas/ApiError' - $ref: '#/components/schemas/AuthError' components: schemas: ListLimitlessMarketsResponse: type: object properties: markets: type: array items: $ref: '#/components/schemas/LimitlessMarket' description: The tradeable markets on this page, in the venue's own order. nextPageToken: type: string nullable: true description: >- Opaque cursor for the next page, or null when there are no more results. required: - markets - nextPageToken ApiError: type: object properties: error: type: object properties: code: $ref: '#/components/schemas/ApiErrorCode' message: type: string description: Plain-text explanation of the error. orderId: type: string format: uuid description: >- The affected order, present only on ORDER_RECONCILIATION_REQUIRED; read it back to determine whether it reached the venue. required: - code - message required: - error title: API Error AuthError: type: object properties: error: type: object properties: code: $ref: '#/components/schemas/AuthErrorCode' message: type: string description: Plain-text explanation of the error. required: - code - message required: - error title: Auth Error LimitlessMarket: type: object properties: marketSlug: type: string minLength: 1 description: Limitless market slug, exactly as the venue's market API names it. example: doge-up-or-down-daily-1787500800 title: type: string description: >- Human-readable title. A grouped market's child is titled with its group, so the row reads on its own. example: 'FA CUP, Swindon Supermarine vs Winslow United: Swindon Supermarine' categories: type: array items: type: string description: The venue's categories for this market. example: - Sports - Football Matches expiresAt: type: string format: date-time description: >- When the venue stops accepting orders on this market. Absent when the venue publishes no expiry for it. example: '2026-09-08T18:45:00.000Z' minSize: type: string description: >- Smallest size, in outcome shares, a resting order on this market may have. example: '100' outcomes: type: array items: $ref: '#/components/schemas/LimitlessMarketOutcome' description: Both outcomes of the market, either of which may be traded. required: - marketSlug - title - categories - outcomes ApiErrorCode: type: string enum: - INVALID_REQUEST - NOT_FOUND - INSUFFICIENT_BALANCE - IDEMPOTENCY_CONFLICT - ORDER_NOT_CANCELLABLE - ORDER_RECONCILIATION_REQUIRED - RATE_LIMITED - INTERNAL_ERROR description: Stable identifier for the error category. AuthErrorCode: type: string enum: - UNAUTHORIZED - BAD_CONTENT_HASH - FORBIDDEN - RATE_LIMITED - AUTH_UNAVAILABLE description: Stable identifier for the error category. LimitlessMarketOutcome: type: object properties: name: type: string description: The outcome this position pays on. example: 'Yes' tokenId: type: string description: Limitless outcome conditional-token id (raw integer string). example: >- 10999813436902295279687793687143205491693625423224337570276428722503253471600 price: type: number description: >- The venue's indicative price (0-1) for this outcome when the page was read. Absent when the venue reported none. example: 0.5755 required: - name - tokenId ```` This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.