[API Proposal] Eligibility-Info/ Pre-flight API

[shilpa-padgaonkar]

Description

Eligibility Info (also referred to as Preflight API)
Today, when an API consumer wants to use a network API (e.g., Number Verification), they must first initiate an authorization flow — only to discover at the end that the subscriber is ineligible or the API provider doesn't support the requested combination.
This wasted round-trip degrades user experience and forces application developers to build error-handling logic around failures that were entirely predictable.
The Eligibility Check API solves this by moving the eligibility determination before the actual API request.

Use cases

Applications can perform graceful fallback
An application checks eligibility before initiating an API flow. If the subscriber is ineligible or API provider doesn't support the service, the application silently falls back to an alternative solution rather than presenting a broken or confusing user experience. The end user never sees an error. Without the preflight check, the application would only discover ineligibility after a failed attempt, having already disrupted the user flow.

[HuubAppelboom]

@shilpa-padgaonkar In the Netherlands, we have a similar functionality integrated into the Telco finder. It may be better to integrate such functionality into the Telco finder, because then you can get a quicker result (in stead of making 2 calls, you only need to make one).