---
title: "List traces"
method: POST
path: "/api/traces/list/"
tags: ["Traces"]
---

# List traces

`POST /api/traces/list/`

## Request

- Base URL: `https://api.respan.ai`
- URL: `https://api.respan.ai/api/traces/list/`
- Auth: one of:
  - HTTP bearer
  - HTTP bearer

Returns traces matching the Filters API payload, with pagination. Metadata keys beginning with `_` are reserved for platform use and omitted from span and trace read responses.

## Query parameters

- `page` integer
- `page_size` integer
- `sort_by` string
- `start_time` string, date-time
- `end_time` string, date-time
- `environment` string

## Request body

- object
  - `filters` Filters: Each key is a field to filter on, and each value is a condition: `{"<field>": {"operator": "<operator>", "value": [...]}}`. A result must match every condition. To set two conditions on one field, such as a range, pass a list of conditions. **Operators:** `""` (equals, the default), `not`, `in`, `not_in`, `lt`, `lte`, `gt`, `gte`, `contains`, `not_contains`, `icontains` (ignores case), `startswith`, `not_startswith`, `endswith`, `not_endswith`, `empty`, `not_empty`. Put values in a list: `""` and `in` match any of the listed values, and `not` and `not_in` match none of them. Other operators take one value; for `empty` and `not_empty`, send `[""]`. The fields you can filter on depend on the endpoint; `metadata__<key>` filters custom metadata where the endpoint supports it.
    - `status` FilterValue: A filter condition with an operator and value.
      - `operator` '' | 'not' | 'in' | 'not_in' | 'lt' | 'lte' | 'gt' | 'gte' | 'contains' | 'not_contains' | 'icontains' | 'startswith' | 'not_startswith' | 'endswith' | 'not_endswith' | 'empty' | 'not_empty': Comparison operator. An empty string means equals.
      - `value` unknown[], required: Value(s) to filter by.
        - unknown
    - `status_code` FilterValue: A filter condition with an operator and value.
      - `operator` '' | 'not' | 'in' | 'not_in' | 'lt' | 'lte' | 'gt' | 'gte' | 'contains' | 'not_contains' | 'icontains' | 'startswith' | 'not_startswith' | 'endswith' | 'not_endswith' | 'empty' | 'not_empty': Comparison operator. An empty string means equals.
      - `value` unknown[], required: Value(s) to filter by.
        - unknown
    - `unique_id` FilterValue: A filter condition with an operator and value.
      - `operator` '' | 'not' | 'in' | 'not_in' | 'lt' | 'lte' | 'gt' | 'gte' | 'contains' | 'not_contains' | 'icontains' | 'startswith' | 'not_startswith' | 'endswith' | 'not_endswith' | 'empty' | 'not_empty': Comparison operator. An empty string means equals.
      - `value` unknown[], required: Value(s) to filter by.
        - unknown
    - `customer_identifier` FilterValue: A filter condition with an operator and value.
      - `operator` '' | 'not' | 'in' | 'not_in' | 'lt' | 'lte' | 'gt' | 'gte' | 'contains' | 'not_contains' | 'icontains' | 'startswith' | 'not_startswith' | 'endswith' | 'not_endswith' | 'empty' | 'not_empty': Comparison operator. An empty string means equals.
      - `value` unknown[], required: Value(s) to filter by.
        - unknown
    - `thread_identifier` FilterValue: A filter condition with an operator and value.
      - `operator` '' | 'not' | 'in' | 'not_in' | 'lt' | 'lte' | 'gt' | 'gte' | 'contains' | 'not_contains' | 'icontains' | 'startswith' | 'not_startswith' | 'endswith' | 'not_endswith' | 'empty' | 'not_empty': Comparison operator. An empty string means equals.
      - `value` unknown[], required: Value(s) to filter by.
        - unknown
    - `custom_identifier` FilterValue: A filter condition with an operator and value.
      - `operator` '' | 'not' | 'in' | 'not_in' | 'lt' | 'lte' | 'gt' | 'gte' | 'contains' | 'not_contains' | 'icontains' | 'startswith' | 'not_startswith' | 'endswith' | 'not_endswith' | 'empty' | 'not_empty': Comparison operator. An empty string means equals.
      - `value` unknown[], required: Value(s) to filter by.
        - unknown
    - `group_identifier` FilterValue: A filter condition with an operator and value.
      - `operator` '' | 'not' | 'in' | 'not_in' | 'lt' | 'lte' | 'gt' | 'gte' | 'contains' | 'not_contains' | 'icontains' | 'startswith' | 'not_startswith' | 'endswith' | 'not_endswith' | 'empty' | 'not_empty': Comparison operator. An empty string means equals.
      - `value` unknown[], required: Value(s) to filter by.
        - unknown
    - `prompt_id` FilterValue: A filter condition with an operator and value.
      - `operator` '' | 'not' | 'in' | 'not_in' | 'lt' | 'lte' | 'gt' | 'gte' | 'contains' | 'not_contains' | 'icontains' | 'startswith' | 'not_startswith' | 'endswith' | 'not_endswith' | 'empty' | 'not_empty': Comparison operator. An empty string means equals.
      - `value` unknown[], required: Value(s) to filter by.
        - unknown
    - `trace_unique_id` FilterValue: A filter condition with an operator and value.
      - `operator` '' | 'not' | 'in' | 'not_in' | 'lt' | 'lte' | 'gt' | 'gte' | 'contains' | 'not_contains' | 'icontains' | 'startswith' | 'not_startswith' | 'endswith' | 'not_endswith' | 'empty' | 'not_empty': Comparison operator. An empty string means equals.
      - `value` unknown[], required: Value(s) to filter by.
        - unknown
    - `span_parent_id` FilterValue: A filter condition with an operator and value.
      - `operator` '' | 'not' | 'in' | 'not_in' | 'lt' | 'lte' | 'gt' | 'gte' | 'contains' | 'not_contains' | 'icontains' | 'startswith' | 'not_startswith' | 'endswith' | 'not_endswith' | 'empty' | 'not_empty': Comparison operator. An empty string means equals.
      - `value` unknown[], required: Value(s) to filter by.
        - unknown
    - `is_root_span` FilterValue: A filter condition with an operator and value.
      - `operator` '' | 'not' | 'in' | 'not_in' | 'lt' | 'lte' | 'gt' | 'gte' | 'contains' | 'not_contains' | 'icontains' | 'startswith' | 'not_startswith' | 'endswith' | 'not_endswith' | 'empty' | 'not_empty': Comparison operator. An empty string means equals.
      - `value` unknown[], required: Value(s) to filter by.
        - unknown
    - `span_workflow_name` FilterValue: A filter condition with an operator and value.
      - `operator` '' | 'not' | 'in' | 'not_in' | 'lt' | 'lte' | 'gt' | 'gte' | 'contains' | 'not_contains' | 'icontains' | 'startswith' | 'not_startswith' | 'endswith' | 'not_endswith' | 'empty' | 'not_empty': Comparison operator. An empty string means equals.
      - `value` unknown[], required: Value(s) to filter by.
        - unknown
    - `span_name` FilterValue: A filter condition with an operator and value.
      - `operator` '' | 'not' | 'in' | 'not_in' | 'lt' | 'lte' | 'gt' | 'gte' | 'contains' | 'not_contains' | 'icontains' | 'startswith' | 'not_startswith' | 'endswith' | 'not_endswith' | 'empty' | 'not_empty': Comparison operator. An empty string means equals.
      - `value` unknown[], required: Value(s) to filter by.
        - unknown
    - `model` FilterValue: A filter condition with an operator and value.
      - `operator` '' | 'not' | 'in' | 'not_in' | 'lt' | 'lte' | 'gt' | 'gte' | 'contains' | 'not_contains' | 'icontains' | 'startswith' | 'not_startswith' | 'endswith' | 'not_endswith' | 'empty' | 'not_empty': Comparison operator. An empty string means equals.
      - `value` unknown[], required: Value(s) to filter by.
        - unknown
    - `log_type` FilterValue: A filter condition with an operator and value.
      - `operator` '' | 'not' | 'in' | 'not_in' | 'lt' | 'lte' | 'gt' | 'gte' | 'contains' | 'not_contains' | 'icontains' | 'startswith' | 'not_startswith' | 'endswith' | 'not_endswith' | 'empty' | 'not_empty': Comparison operator. An empty string means equals.
      - `value` unknown[], required: Value(s) to filter by.
        - unknown
    - `stream` FilterValue: A filter condition with an operator and value.
      - `operator` '' | 'not' | 'in' | 'not_in' | 'lt' | 'lte' | 'gt' | 'gte' | 'contains' | 'not_contains' | 'icontains' | 'startswith' | 'not_startswith' | 'endswith' | 'not_endswith' | 'empty' | 'not_empty': Comparison operator. An empty string means equals.
      - `value` unknown[], required: Value(s) to filter by.
        - unknown
    - `has_tool_calls` FilterValue: A filter condition with an operator and value.
      - `operator` '' | 'not' | 'in' | 'not_in' | 'lt' | 'lte' | 'gt' | 'gte' | 'contains' | 'not_contains' | 'icontains' | 'startswith' | 'not_startswith' | 'endswith' | 'not_endswith' | 'empty' | 'not_empty': Comparison operator. An empty string means equals.
      - `value` unknown[], required: Value(s) to filter by.
        - unknown
    - `cache_bit` FilterValue: A filter condition with an operator and value.
      - `operator` '' | 'not' | 'in' | 'not_in' | 'lt' | 'lte' | 'gt' | 'gte' | 'contains' | 'not_contains' | 'icontains' | 'startswith' | 'not_startswith' | 'endswith' | 'not_endswith' | 'empty' | 'not_empty': Comparison operator. An empty string means equals.
      - `value` unknown[], required: Value(s) to filter by.
        - unknown
    - `cache_key` FilterValue: A filter condition with an operator and value.
      - `operator` '' | 'not' | 'in' | 'not_in' | 'lt' | 'lte' | 'gt' | 'gte' | 'contains' | 'not_contains' | 'icontains' | 'startswith' | 'not_startswith' | 'endswith' | 'not_endswith' | 'empty' | 'not_empty': Comparison operator. An empty string means equals.
      - `value` unknown[], required: Value(s) to filter by.
        - unknown
    - `prompt_tokens` FilterValue: A filter condition with an operator and value.
      - `operator` '' | 'not' | 'in' | 'not_in' | 'lt' | 'lte' | 'gt' | 'gte' | 'contains' | 'not_contains' | 'icontains' | 'startswith' | 'not_startswith' | 'endswith' | 'not_endswith' | 'empty' | 'not_empty': Comparison operator. An empty string means equals.
      - `value` unknown[], required: Value(s) to filter by.
        - unknown
    - `completion_tokens` FilterValue: A filter condition with an operator and value.
      - `operator` '' | 'not' | 'in' | 'not_in' | 'lt' | 'lte' | 'gt' | 'gte' | 'contains' | 'not_contains' | 'icontains' | 'startswith' | 'not_startswith' | 'endswith' | 'not_endswith' | 'empty' | 'not_empty': Comparison operator. An empty string means equals.
      - `value` unknown[], required: Value(s) to filter by.
        - unknown
    - `total_tokens` FilterValue: A filter condition with an operator and value.
      - `operator` '' | 'not' | 'in' | 'not_in' | 'lt' | 'lte' | 'gt' | 'gte' | 'contains' | 'not_contains' | 'icontains' | 'startswith' | 'not_startswith' | 'endswith' | 'not_endswith' | 'empty' | 'not_empty': Comparison operator. An empty string means equals.
      - `value` unknown[], required: Value(s) to filter by.
        - unknown
    - `cost` FilterValue: A filter condition with an operator and value.
      - `operator` '' | 'not' | 'in' | 'not_in' | 'lt' | 'lte' | 'gt' | 'gte' | 'contains' | 'not_contains' | 'icontains' | 'startswith' | 'not_startswith' | 'endswith' | 'not_endswith' | 'empty' | 'not_empty': Comparison operator. An empty string means equals.
      - `value` unknown[], required: Value(s) to filter by.
        - unknown
    - `latency` FilterValue: A filter condition with an operator and value.
      - `operator` '' | 'not' | 'in' | 'not_in' | 'lt' | 'lte' | 'gt' | 'gte' | 'contains' | 'not_contains' | 'icontains' | 'startswith' | 'not_startswith' | 'endswith' | 'not_endswith' | 'empty' | 'not_empty': Comparison operator. An empty string means equals.
      - `value` unknown[], required: Value(s) to filter by.
        - unknown
    - `positive_feedback` FilterValue: A filter condition with an operator and value.
      - `operator` '' | 'not' | 'in' | 'not_in' | 'lt' | 'lte' | 'gt' | 'gte' | 'contains' | 'not_contains' | 'icontains' | 'startswith' | 'not_startswith' | 'endswith' | 'not_endswith' | 'empty' | 'not_empty': Comparison operator. An empty string means equals.
      - `value` unknown[], required: Value(s) to filter by.
        - unknown

## Response `200`

Paginated list of traces.

- object
  - `count` integer, required: Number of results on this page, not the total. Request pages until `next` is null to get every result.
  - `next` string, nullable: URL for the next page of results.
  - `previous` string, nullable: URL for the previous page of results.
  - `results` object[], required: Current page of traces.
    - `id` string: Trace identifier.
    - `trace_unique_id` string: Unique trace identifier.
    - `root_span_unique_id` string: Root span ID for the trace.
    - `unique_organization_id` string: Organization unique ID.
    - `organization_id` string: Alias of `unique_organization_id`.
    - `organization_name` string: Organization name when available.
    - `organization_key_id` string: API key identifier used to create the trace.
    - `environment` string: Environment for the trace.
    - `customer_identifier` string: Customer or user identifier.
    - `start_time` string, date-time: When the trace started.
    - `end_time` string, date-time: When the trace ended.
    - `duration` number: Total duration in seconds.
    - `span_count` integer: Total spans in the trace.
    - `llm_call_count` integer: Number of LLM-call spans.
    - `total_cost` number: Total cost in USD.
    - `total_prompt_tokens` integer: Sum of prompt tokens.
    - `total_completion_tokens` integer: Sum of completion tokens.
    - `total_tokens` integer: Sum of all tokens.
    - `error_count` integer: Number of error spans.
    - `name` string: Root span name.
    - `input` string: Root span input. API key responses may include full storage-enriched content.
    - `output` string: Root span output. API key responses may include full storage-enriched content.
    - `metadata` object: Customer metadata. Keys beginning with `_` are reserved and omitted from customer-facing responses.
    - `trace_group_identifier` string: Workflow or trace-group identifier.
    - `session_identifier` string: Session identifier when present.
    - `model` string: Primary/root model used.
    - `storage_object_key` string: Storage object key for the root span payload when present.

## Other responses

- `400`: Bad Request
- `403`: The API key is missing, invalid or expired.
- `413`: The query exceeded the service's memory or execution-time limit. Narrow the time range or add filters before retrying.
- `429`: Rate Limited
- `500`: Internal Server Error

## Changes

- **2026-10-21** `c30bcb383ee8`: 5 breaking, 4 info
  - request body became required
  - the response property `next` became nullable for the status `200`
  - the response property `previous` became nullable for the status `200`
  - the `results/items/duration` response's property format changed from `double` to no format for status `200`
  - …5 more
- **2026-10-02** `b830b79cfd52`: 46 breaking, 5 warning, 142 info
  - removed the enum value `iexact` of the request property `filters/cache_key/operator`
  - removed the enum value `iexact` of the request property `filters/completion_tokens/operator`
  - removed the enum value `iexact` of the request property `filters/cost/operator`
  - removed the enum value `iexact` of the request property `filters/custom_identifier/operator`
  - …189 more
- **2026-09-17** `6fa8242da8c2`: 1 warning, 1 info
  - deleted the `header` request parameter `Authorization`
  - the endpoint scheme security `RespanApiKey` was added to the API
- **2026-09-12** `22b868ef3f22`: 1 info
  - api operation id `list-traces` removed and replaced with `traces_listTraces`

[Operation history](https://skmtc.dev/respan/apis/respan-api/changes/api/traces/list/post.md)

---

[API](https://skmtc.dev/respan/apis/respan-api.md) - [All operations](https://skmtc.dev/respan/apis/respan-api/llms.txt) - [OpenAPI document](https://skmtc.dev/respan/apis/respan-api/revisions/900841387635?raw)