> For the complete documentation index, see [llms.txt](https://relationlabs.gitbook.io/relation-graph/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://relationlabs.gitbook.io/relation-graph/g-zh/api.md).

# API

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