---
title: "Watch a measurement (Lab 'My Channels')"
method: POST
path: "/cell_measurements/{measurement_id}/watch"
tags: ["Cell Measurements"]
---

# Watch a measurement (Lab 'My Channels')

`POST /cell_measurements/{measurement_id}/watch`

## Request

- Base URL: `https://api.ionworks.com`
- URL: `https://api.ionworks.com/cell_measurements/{measurement_id}/watch`
- Auth: none declared

Start watching a measurement for the current user.

Idempotent -- watching an already-watched measurement is a no-op. Watching
the live measurement on a channel is how a user adds that channel to their
"My Channels" view.

## Path parameters

- `measurement_id` string, uuid, required

## Response `204`

Successful Response

## Other responses

- `422`: Validation Error

## Changes

- **2026-09-30** `ea3d377fec1a`: 1 breaking
  - for the `path` request parameter `measurement_id`, the format changed from no format to `uuid`

[Operation history](https://skmtc.dev/ionworks/apis/ionworks-api/changes/cell_measurements/:measurement_id/watch/post.md)

---

[API](https://skmtc.dev/ionworks/apis/ionworks-api.md) - [All operations](https://skmtc.dev/ionworks/apis/ionworks-api/llms.txt) - [OpenAPI document](https://skmtc.dev/ionworks/apis/ionworks-api/revisions/abebbbc5f60a?raw)