https://www.theverge.com/circuitbreaker/2018/8/29/17795872/sonos-audio-notifications-developer-program-ai

Alongside the announcement of its brand new Sonos Amp today, Sonos has also revealed an expansion of its developer program. On September 6th, the company plans to “fully open up to all potential partners,” granting third-party apps and connected home interfaces greater control over Sonos devices and its platform. “Hopefully in a year, we’re gonna be discussing all these interesting and innovative integrations that are coming out,” Lidiane Jones, Sonos’ VP of software product management at Sonos. One of the first partners that Sonos will have on board is IFTTT, the popular service that can chain together actions from hundreds of different apps and devices.

A new set of cloud-based APIs will be made available that, among other things, will allow line-in components in a Sonos system to be selected inside third-party control interfaces like those from Control4 and Creston. Third-party interfaces will also be able to access Sonos playlists for the first time. Volume passthrough is another of the new APIs that developers will be able to utilize. New APIs and capabilities will follow “on a regular basis” after the September launch. The “Works with Sonos” certification will remain separate from the main dev program and remains an invite-only stamp of excellence from the company.