Get backtest logs

GET https://rest.haasapi.com/v1/backtests/{backtest_id}/logs

The execution log of a finished backtest: the script’s own log output plus the engine’s report summary, in execution order. Returned whole.

Requires the read scope.

Example request

curl "https://rest.haasapi.com/v1/backtests/{backtest_id}/logs" \
  -H "Authorization: Bearer hk_live_YOUR_KEY"

Response

200 OK. Returns a BacktestLogs.

{
  "data": [
    {
      "at": "2026-08-29T20:30:00Z",
      "message": "Backtest start date: 8/28/2026 8:30:00 PM GTM+0"
    },
    {
      "at": "2026-08-29T20:30:00Z",
      "message": "Gross profits: 0.00000000 USDT"
    }
  ]
}

Fields

BacktestLogs

Field	Type	Description
data	array of BacktestLogLine	The log lines, in execution order.

BacktestLogLine

Field	Type	Description
at	string, nullable	The simulated candle time the line was logged at, RFC 3339 UTC. null when the line carries no timestamp.
message	string	The log message.

Errors

All errors are RFC 9457 problem documents.

Status	Description
400	The request is malformed (invalid limit, unusable cursor, …). (code: invalid_request)
401	Missing, malformed, disabled, or revoked API key. (code: invalid_api_key)
404	No backtest with that id, or it is still executing. (code: backtest_not_found)
500	An unexpected error inside the API. Nothing about the request caused it; retry, and quote the instance value if it persists. (code: internal_error)
502	An internal service answered in a way the API could not serve. Retry. (code: upstream_error)
503	The request could not be served right now. Retry with the same key - do not discard it. (code: temporarily_unavailable)
504	An internal service did not answer within the deadline. Retry with backoff. (code: upstream_timeout)

{
  "type": "https://docs.haasapi.com/errors/invalid_request",
  "title": "Invalid request",
  "status": 400,
  "detail": "The request is malformed (invalid limit, unusable cursor, …).",
  "code": "invalid_request"
}