---
title: "Changes to Create an alert rule"
method: POST
path: "/v1/platform/alerts/{session_id}"
---

# Changes to Create an alert rule

`POST /v1/platform/alerts/{session_id}`

> Every recorded change to this endpoint, newest first.

## Timeline

Changed in 3 of 48 revisions.

- **2026-04-13** `e86be67718ee` — 1 breaking, 2 warning, 2 info
- **2026-03-31** `9b9d7777d6a9` — 1 warning, 1 info
- **2026-03-24** `6b0ee17295ef` — 2 warning, 2 info

## Changes

- **2026-04-13** `e86be67718ee` — 1 breaking, 2 warning, 2 info
  - the `rule/window_minutes` response property's max was increased from `15.00` to `60.00` for the response status `201`
  - the `rule/window_minutes` request property's min was set to `1.00`
  - added the new `total_cost` enum value to the `rule/attribute` response property for the response status `201`
  - added the new `total_cost` enum value to the request property `rule/attribute`
  - the `rule/window_minutes` request property's max was increased from `15.00` to `60.00`
- **2026-03-31** `9b9d7777d6a9` — 1 warning, 1 info
  - added the new `dynatrace` enum value to the `actions/items/target` response property for the response status `201`
  - added the new `dynatrace` enum value to the request property `actions/items/target`
- **2026-03-24** `6b0ee17295ef` — 2 warning, 2 info
  - added the new `gt` enum value to the `rule/operator` response property for the response status `201`
  - added the new `lt` enum value to the `rule/operator` response property for the response status `201`
  - added the new `gt` enum value to the request property `rule/operator`
  - added the new `lt` enum value to the request property `rule/operator`

---

[Operation](https://skmtc.dev/langchain-ai/apis/langsmith/docs/v1/platform/alerts/:session_id/post.md) · [API](https://skmtc.dev/langchain-ai/apis/langsmith.md) · [Page](https://skmtc.dev/langchain-ai/apis/langsmith/changes/v1/platform/alerts/:session_id/post)