---
title: "Changes to Create span"
method: POST
path: "/v1/private/spans"
---

# Changes to Create span

`POST /v1/private/spans`

> Every recorded change to this endpoint, newest first.

## Timeline

Changed in 3 of 58 revisions.

- **2026-07-02** `3144ea40dac0` — 1 info
- **2026-05-08** `b9100cf75dd3` — 1 info
- **2026-05-04** `d606e84c75e4` — 1 breaking, 1 warning

## Changes

- **2026-07-02** `3144ea40dac0` — 1 info
  - added the new `evaluator` enum value to the request property `source`
- **2026-05-08** `b9100cf75dd3` — 1 info
  - added the new optional request property `environment`
- **2026-05-04** `d606e84c75e4` — 1 breaking, 1 warning
  - removed the enum value `evaluator` of the request property `source`
  - removed the request property `environment`

---

[Operation](https://skmtc.dev/comet-ml/apis/opik-rest-api/docs/v1/private/spans/post.md) · [API](https://skmtc.dev/comet-ml/apis/opik-rest-api.md) · [Page](https://skmtc.dev/comet-ml/apis/opik-rest-api/changes/v1/private/spans/post)