> For the complete documentation index, see [llms.txt](https://docs.fantom.foundation/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.fantom.foundation/build-on-opera/providers/api.md).

# API

- [The Graph](https://docs.fantom.foundation/build-on-opera/providers/api/the-graph.md)
- [Covalent](https://docs.fantom.foundation/build-on-opera/providers/api/covalent.md)
- [Moralis](https://docs.fantom.foundation/build-on-opera/providers/api/moralis.md)