---
title: "List trace spans"
method: GET
path: "/traces/{trace_id}/spans"
tags: ["Traces"]
---

# List trace spans

`GET /traces/{trace_id}/spans`

Returns spans for a ready trace.

## Path parameters

- `trace_id` string, required

## Response `200`

Trace spans

- object[]
  - `id` string, required
  - `otel_span_id` string, required
  - `parent_otel_span_id` string, nullable, required
  - `name` string, required
  - `kind` string, nullable, required
  - `start_time_ns` string, nullable, required
  - `end_time_ns` string, nullable, required
  - `duration_ms` number, nullable, required
  - `status_code` string, nullable, required
  - `status_description` string, nullable, required
  - `input_tokens` number, nullable, required
  - `output_tokens` number, nullable, required
  - `model_name` string, nullable, required
  - `tps` number, nullable, required
  - `attributes` object
  - `events` unknown

## Other responses

- `404` — Not found

---

[API](https://skmtc.dev/uselemma/apis/lemma-platform-api.md) · [All operations](https://skmtc.dev/uselemma/apis/lemma-platform-api/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/uselemma/lemma-platform-api/revisions/5242165d7015/schema)