Filter experiment traces

curl -X POST "https://api.respan.ai/api/v2/experiments/experiment_id/logs/list/?sort_by=-start_time" \
     -H "Authorization: Bearer <respanApiKey>" \
     -H "Content-Type: application/json" \
     -d '{}'

{
  "count": 150,
  "results": [
    {
      "id": "trace_456",
      "trace_unique_id": "trace_456",
      "root_span_unique_id": "string",
      "environment": "prod",
      "customer_identifier": "string",
      "name": "Dataset Entry 1",
      "input": null,
      "output": null,
      "expected_output": null,
      "status": "success",
      "comparison_key": "string",
      "start_time": "2024-01-15T09:30:00Z",
      "end_time": "2024-01-15T09:30:00Z",
      "duration": 1.1,
      "span_count": 1,
      "llm_call_count": 1,
      "total_cost": 0.0012,
      "total_tokens": 1,
      "total_prompt_tokens": 1,
      "total_completion_tokens": 1,
      "error_count": 1,
      "scores": {}
    }
  ],
  "next": "string",
  "previous": "string",
  "current_filters": {}
}

List experiment traces using POST-for-filtering. Supports status, cost, comparison key, timestamp, metadata, and score filters.

Authentication

AuthorizationBearer

Use your Respan API key for Respan API authentication. Enter only the Respan API key value; clients send Authorization: Bearer <RESPAN_API_KEY>. For /api/responses, provider credentials such as Perplexity, OpenAI, or Azure OpenAI go in Settings -> Providers or respan_params.credential_override in the request body, not in this authentication field.

AuthorizationBearer

Use a dashboard JWT only for dashboard-authenticated endpoints. Respan API-key endpoints use the respanApiKey auth field instead.

Path parameters

experiment_idstringRequired

Experiment ID returned as id in experiment responses.

Query parameters

pageintegerOptional>=1

Page number.

page_sizeintegerOptional1-100

Number of results to return per page. Maximum 100.

sort_bystringOptional

Field to sort by. Prefix with - for descending order.

start_timedatetimeOptional

Filter results at or after this timestamp.

end_timedatetimeOptional

Filter results before this timestamp.

detailenumOptional

Set to 1 or true to include span tree details in list responses.

Allowed values:

preview_lengthintegerOptional<=100000

Truncate input, expected_output, and output to this many characters. Omitted, non-positive, or unparseable values return full text; ignored when detail is set.

Request

This endpoint expects an object.

filtersobjectOptional

Filter criteria using the standard Respan filter format.

is_exportingbooleanOptionalDefaults to false

Reserved for dashboard exports.

Response

Paginated filtered list of experiment traces.

countinteger

Total number of matching results.

resultslist of objects

nextstring or nullOptional

URL for the next page, if any.

previousstring or nullOptional

URL for the previous page, if any.

current_filtersobjectOptional

Normalized filters applied to this request.

Errors

400

Bad Request Error

401

Unauthorized Error

404

Not Found Error

413

Content Too Large Error