---
title: "Changes to Trigger a task run"
method: POST
path: "/v2/tasks/{task_id}/trigger"
---

# Changes to Trigger a task run

`POST /v2/tasks/{task_id}/trigger`

> Every recorded change to this endpoint, newest first.
> 16 revisions in range; 1 not diffed.

## Timeline

Changed in 3 of 16 revisions.

- **2026-08-28** `f63ac334fd4a` — 1 warning
- **2026-08-27** `9263b98aaefb` — 1 info
- **2026-08-12** `1103033ea050` — 2 breaking

## Changes

- **2026-08-28** `f63ac334fd4a` — 1 warning
  - the `anyOf[#/components/schemas/TriggerRunExperimentTaskRunRequest]/experiment_name` request property's maxLength was set to `255`
- **2026-08-27** `9263b98aaefb` — 1 info
  - added the new optional request property `anyOf[#/components/schemas/TriggerRunExperimentTaskRunRequest]/query_filter`
- **2026-08-12** `1103033ea050` — 2 breaking
  - the `anyOf[#/components/schemas/TriggerRunExperimentTaskRunRequest]/experiment_name` request property's minLength was increased from `0` to `1`
  - added the pattern `^[^"\\]*$` to the request property `anyOf[#/components/schemas/TriggerRunExperimentTaskRunRequest]/experiment_name`

---

[Operation](https://skmtc.dev/arize-ai/apis/arize-rest-api/docs/v2/tasks/:task_id/trigger/post.md) · [API](https://skmtc.dev/arize-ai/apis/arize-rest-api.md) · [Page](https://skmtc.dev/arize-ai/apis/arize-rest-api/changes/v2/tasks/:task_id/trigger/post)