April 2026
Upgrade to MATLAB R2026a on ThingSpeak
New features in MATLAB® are now available to ThingSpeak™ users. For details see the MATLAB Release Notes.
REST API host header compliance
The REST API host URL header now has compliance checks. The host header must
be api.thingspeak.com.
The validation of host header compliance was not enforced in the past. Now any request to the ThingSpeak REST API with an invalid host header will be rejected with an HTTP 403 error.
September 2025
Upgrade to MATLAB R2025b on ThingSpeak
New features in MATLAB are now available to ThingSpeak users. For details see the MATLAB Release Notes.
May 2025
Upgrade to MATLAB R2025a on ThingSpeak
New features in MATLAB are now available to ThingSpeak users. For details see the MATLAB Release Notes.
September 2024
Upgrade to MATLAB R2024b on ThingSpeak
New features in MATLAB are now available to ThingSpeak users. For details see the MATLAB Release Notes.
ThingTweet removed
The ThingTweet app has been removed.
The ThingTweet app is no longer available. As an alternative you can use the Alerts API. For an introduction to using a MATLAB Analysis app with a React app to sent an alert, see Act on Your Data.
June 2024
ThingTweet to be removed
The ThingTweet app will be removed in a future release.
Using the ThingTweet app results in an error.
March 2024
Upgrade to MATLAB R2024a on ThingSpeak
New features in MATLAB are now available to ThingSpeak users. For details see the MATLAB Release Notes.
September 2023
Upgrade to MATLAB R2023b on ThingSpeak
New features in MATLAB are now available to ThingSpeak users. For details see the MATLAB Release Notes.
March 2023
Upgrade to MATLAB R2023a on ThingSpeak
New features in MATLAB are now available to ThingSpeak users. For details see the MATLAB Release Notes.
September 2022
Upgrade to MATLAB R2022b on ThingSpeak
New features in MATLAB are now available to ThingSpeak users. For details see the MATLAB Release Notes.
June 2022
Write and View Images with Image Channels
With a paid license, you can now write JPEG images to a ThingSpeak image channel. For information on creating an image channel, see Create an Image Channel. New API functionality to support image data in these channels is described on the following pages:
A new Image Display widget allows you to view the latest image written to an image channel. See Image Display.
For more information, see the following new examples:
Note
To create an image channel you must have a paid license. See How to Buy.
April 2022
URL Encoding
Stricter requirements are in place so that query parameters sent as part of a
Write Data GET Request
now must be URL encoded (see application/x-www-form-urlencoded) to accommodate special
characters. For example, spaces in URLs either must be specified as
%20, or you can include the whole URL in quotes.
Simplified Response to POST
The server response to a channel update is simplified, without extraneous header text.
Performance Improvements
Several infrastructure enhancements deliver improved performance, better security, and bug fixes.
March 2022
Upgrade to MATLAB R2022a on ThingSpeak
New features in MATLAB are now available to ThingSpeak users. For details see the MATLAB Release Notes.
Legacy MQTT API Removed
The legacy MQTT API has been removed and is no longer supported. This includes the following changes:
The broker URL
mqtt.thingspeak.comis no longer supported. Usemqtt3.thingspeak.cominstead.MQTT API keys are no longer supported, and no longer appear in your ThingSpeak account profile. Instead use MQTT device credentials.
For information on updating your code and workflows to the new MQTT API, see MQTT3 Interface.
September 2021
Upgrade to MATLAB R2021b on ThingSpeak
New MATLAB features are now available to ThingSpeak users.