generated: '2026-09-17'
method: searched
source: >-
  https://learn.trylevel2.com/docs/technical/virtual-trading;
  https://learn.trylevel2.com/docs/Broker/integrating-iframe;
  https://learn.trylevel2.com/docs/Broker/backtest;
  openapi/level2-hub-controller-openapi.json
description: >-
  Level2 publishes no API sandbox in the usual sense — there is no test-mode key prefix, no separate
  sandbox host, no test fixtures and no simulated clock, and the Broker API is exercised against
  production with a live JWT. What it does publish is two genuine rehearsal surfaces at the product
  level (paper trading through Alpaca, and backtesting) plus a public iframe test target for the
  embedded UI. Recorded as what it is, not upgraded into a sandbox it is not.
api_sandbox:
  published: false
  test_host: null
  test_key_prefix: null
  test_fixtures: []
  time_simulation: false
  note: >-
    The Broker API documentation describes one base URL (https://hub2.trylevel2.com/) and one auth
    path. The provider-published Postman collection carries a {{base_url}} and a {{local_url}}
    variable but ships no values for either and supplies no test credentials.
rehearsal_surfaces:
  - name: Virtual trading (paper trading)
    kind: product-level dry run
    url: https://learn.trylevel2.com/docs/technical/virtual-trading
    description: >-
      A strategy can be deployed with virtual funds and no downside risk before it is deployed live.
      The documented path is to connect a free Alpaca account; orders from Level2 are then executed
      on Alpaca rather than against the trader's real broker. The docs explicitly recommend virtual
      trading for a period before any live deployment, on the grounds that a backtest can be
      over-optimised to historic data.
  - name: Backtest
    kind: historical simulation
    url: https://learn.trylevel2.com/docs/Broker/backtest
    operations:
      - backtest_strategy_backtest_strategy_post
      - backtest_on_different_timeframe_backtest_on_different_timeframe_get
      - broker_get_recent_backtest_details_broker_get_recent_backtest_details_get
    description: >-
      Two documented modes. Realtime Backtest computes over 1,500 historical datapoints for a fast
      result; Comprehensive Backtest uses more datapoints and is slower. Market data for a broker
      integration comes from the broker's own APIs.
  - name: Embedded UI test target
    kind: hosted test instance
    url: https://iframe-compat.trylevel2.com/
    status: 200
    description: >-
      A publicly reachable Level2 instance the broker-integration documentation names for testing the
      iframe embed before the broker receives its own customised iframe link. No credentials are
      required to load it.
test_values: []
test_values_note: >-
  No test cards, magic identifiers, sandbox account numbers or fixture tokens are published. Nothing
  is invented here.