This property provides a link to the dedicated plans page that applies to an API, providing information about access tiers, rate limits, and features available for an API as part of a wider API business plan
APIs.json Apis Properties Plans Info
Message: Has API Plans
Policies
Plans
Plans are where the business of APIs becomes explicit. Tiers, rate limits, features, and pricing laid out clearly is how you build a sustainable API program that consumers can understand and trust.