Description: Teams managing channel classifiers across multiple Amplitude projects can now do it programmatically via a public REST API. Keep classifier logic in sync with external campaign tools and replicate rules across projects — no more manual project-by-project updates.

With this release, you can:

• List all classifiers in a project
• Fetch a classifier by name
• Create new classifiers programmatically
• Update existing classifiers, including waterfall logic and multi-value matching

Where: Access via https://amplitude.com/api/2/channel-classifiers. Authentication uses your project API key and secret via HTTP Basic auth, scoped per project. When: This feature is available now on all plans.