Get backtest logs

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

The complete execution log of a completed backtest, as structured lines (timestamp, severity, message).

Requires the partner scope.

Example request

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

Response

200 OK. Returns a PartnerBacktestLogs.

{
  "data": [
    {
      "timestamp": "2026-08-28T20:30:00Z",
      "severity": "info",
      "message": "Backtest started."
    },
    {
      "timestamp": "2026-08-28T21:05:00Z",
      "severity": "trade",
      "message": "Placed buy order at 25000."
    }
  ]
}

Fields

PartnerBacktestLogs

Field	Type	Description
data	array of PartnerBacktestLogEntry

PartnerBacktestLogEntry

Field	Type	Description
timestamp	string, nullable	When the line was logged (RFC 3339), or null if it carried no timestamp.
severity	string	info, trade, warning, error, or custom.
message	string

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 completed backtest with that id. (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"
}