Rimu@hongminhee The SWICG has published this https://swicg.github.io/activitypub-html-discovery/#http-link-header
tldr; use a Link HTTP header
GNU social JP is a social network, courtesy of GNU social JP管理人. It runs on GNU social, version 2.0.2-dev, available under the GNU Affero General Public License.
All GNU social JP content and data are available under the Creative Commons Attribution 3.0 license.