> ## Documentation Index
> Fetch the complete documentation index at: https://docs.simmer.markets/llms.txt
> Use this file to discover all available pages before exploring further.

# Fast Markets

> List fast-resolving markets, optionally filtered by asset and time window.

Parameters:
- asset: Crypto ticker to filter by (BTC, ETH, SOL, XRP, DOGE, ...).
         Maps to a title search — e.g. asset=BTC searches for "Bitcoin".
- window: Duration bucket (5m, 15m, 1h, 4h, daily). Matches Polymarket's
          standard crypto speed-trading tiers.
- venue: Filter by venue ('polymarket', 'kalshi', 'sim').
- limit: Max markets to return (default 50).
- sort: 'volume' to sort by 24h volume, 'resolves_at' for pure chronological.
- market_status: 'live' (in settlement window now) or 'upcoming' (not yet in
          settlement window). Omit for all. Note: this filters by the strict
          `is_live_now` semantic below — for "currently tradable on Polymarket"
          use `is_orderbook_open` instead.

Field semantics (frequently confused):
- `is_orderbook_open` (bool): the market is accepting orders on Polymarket
  right now. True for every market in this response — the `status='active'`
  filter implies it. Equivalent to Gamma's `active && !closed`.
- `is_live_now` (bool): the market is inside its final settlement window —
  the last `<window>` minutes before `resolves_at`. For a fast-5m market,
  true only in the 5 minutes before resolution. This is stricter than
  Gamma's "active" flag. Use this if you only want to act on markets in
  their immediate price-discovery window. If you want all tradable markets,
  use `is_orderbook_open` (or just consume the full list).

Equivalent to GET /api/sdk/markets?tags=fast[,fast-<window>]&q=<asset_name>



## OpenAPI

````yaml /openapi.json get /api/sdk/fast-markets
openapi: 3.1.0
info:
  title: Simmer API
  description: Agent-native trading infrastructure for prediction markets.
  version: 1.0.0
servers:
  - url: https://api.simmer.markets
security: []
paths:
  /api/sdk/fast-markets:
    get:
      summary: Fast Markets
      description: >-
        List fast-resolving markets, optionally filtered by asset and time
        window.


        Parameters:

        - asset: Crypto ticker to filter by (BTC, ETH, SOL, XRP, DOGE, ...).
                 Maps to a title search — e.g. asset=BTC searches for "Bitcoin".
        - window: Duration bucket (5m, 15m, 1h, 4h, daily). Matches Polymarket's
                  standard crypto speed-trading tiers.
        - venue: Filter by venue ('polymarket', 'kalshi', 'sim').

        - limit: Max markets to return (default 50).

        - sort: 'volume' to sort by 24h volume, 'resolves_at' for pure
        chronological.

        - market_status: 'live' (in settlement window now) or 'upcoming' (not
        yet in
                  settlement window). Omit for all. Note: this filters by the strict
                  `is_live_now` semantic below — for "currently tradable on Polymarket"
                  use `is_orderbook_open` instead.

        Field semantics (frequently confused):

        - `is_orderbook_open` (bool): the market is accepting orders on
        Polymarket
          right now. True for every market in this response — the `status='active'`
          filter implies it. Equivalent to Gamma's `active && !closed`.
        - `is_live_now` (bool): the market is inside its final settlement window
        —
          the last `<window>` minutes before `resolves_at`. For a fast-5m market,
          true only in the 5 minutes before resolution. This is stricter than
          Gamma's "active" flag. Use this if you only want to act on markets in
          their immediate price-discovery window. If you want all tradable markets,
          use `is_orderbook_open` (or just consume the full list).

        Equivalent to GET
        /api/sdk/markets?tags=fast[,fast-<window>]&q=<asset_name>
      operationId: api_sdk_fast_markets_api_sdk_fast_markets_get
      parameters:
        - name: asset
          in: query
          required: false
          schema:
            anyOf:
              - type: string
              - type: 'null'
            title: Asset
        - name: window
          in: query
          required: false
          schema:
            anyOf:
              - type: string
              - type: 'null'
            title: Window
        - name: venue
          in: query
          required: false
          schema:
            anyOf:
              - type: string
              - type: 'null'
            title: Venue
        - name: limit
          in: query
          required: false
          schema:
            type: integer
            default: 50
            title: Limit
        - name: sort
          in: query
          required: false
          schema:
            anyOf:
              - type: string
              - type: 'null'
            title: Sort
        - name: market_status
          in: query
          required: false
          schema:
            anyOf:
              - type: string
              - type: 'null'
            title: Market Status
      responses:
        '200':
          description: Successful Response
          content:
            application/json:
              schema: {}
        '422':
          description: Validation Error
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/HTTPValidationError'
components:
  schemas:
    HTTPValidationError:
      properties:
        detail:
          items:
            $ref: '#/components/schemas/ValidationError'
          type: array
          title: Detail
      type: object
      title: HTTPValidationError
    ValidationError:
      properties:
        loc:
          items:
            anyOf:
              - type: string
              - type: integer
          type: array
          title: Location
        msg:
          type: string
          title: Message
        type:
          type: string
          title: Error Type
        input:
          title: Input
        ctx:
          type: object
          title: Context
      type: object
      required:
        - loc
        - msg
        - type
      title: ValidationError

````