# API

- [Relation One 用户 Profile](/relation-graph/g-zh/api/profile.md)
- [查询用户持有的NFT](/relation-graph/g-zh/api/nft-list.md)
- [查询用户持有的SBT](/relation-graph/g-zh/api/sbt-list.md)
- [用户标签](/relation-graph/g-zh/api/user-tag.md)
- [关系图谱](/relation-graph/g-zh/api/relationship-graph.md)
- [多维推荐](/relation-graph/g-zh/api/multi-dimensional-recommendation.md)
- [跨平台身份链接](/relation-graph/g-zh/api/cross-platform-identity-linking.md)
- [共同好友](/relation-graph/g-zh/api/mutual-friend.md)
- [共同交互合约](/relation-graph/g-zh/api/mutual-contract-interaction.md)
- [同一身份验证](/relation-graph/g-zh/api/unified-dentity-verification.md)