Full Integration: Threads must fully integrate ActivityPub support, enabling interoperability with other platforms using this protocol.

Universal Accessibility: The feature must be enabled by default for all Threads users, ensuring broad accessibility without requiring users to opt-in manually.

Selective Federation: Threads may implement selective federation, allowing or blocking interaction with certain Mastodon instances or other ActivityPub platforms. However, for this criterion to be satisfied, Threads must publicly explain the criteria and process for such decisions, ensuring transparency in its federation policies.