intercom.com
In short: Intercom App Store (intercom.com) accepts public intercom app listing. It is free to submit, takes a moderate amount of preparation, and scores 84/100 on our impact ranking (high impact).
Build a public your tool Intercom app and submit its OAuth-enabled listing.
Must solve a real Intercom workflow, use OAuth, include support/privacy details, and pass review.
Priority is high, which sets the band. It is free and moderate to complete, which adjusts it within that band. The score ranks your queue — it is not a measure of domain authority.