No, destination insert functions are currently available as cloud-mode destinations only. Segment is in the early phases of exploration and discovery for supporting customer "web plugins" for custom device-mode destinations and other use cases, but this is unsupported today.

No, an insert function can only be connected to one destination.

If you are a partner, looking to publish your destination and distribute your app through Segment catalog, visit the[Developer Center](https://segment.com/partners/developer-center/){:target="_blank"} and check out the Segment[partner docs](/docs/partners/).