> For the complete documentation index, see [llms.txt](https://docs.openpassport.app/docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.openpassport.app/docs/technical-docs.md).

# Technical docs

- [SDK class](https://docs.openpassport.app/docs/technical-docs/sdk-class.md)
- [OpenPassportVerifier](https://docs.openpassport.app/docs/technical-docs/sdk-class/openpassportverifier.md)
- [OpenPassport Attestation](https://docs.openpassport.app/docs/technical-docs/sdk-class/openpassport-attestation.md)
- [Mobile app](https://docs.openpassport.app/docs/technical-docs/mobile-app.md)
- [Circuits](https://docs.openpassport.app/docs/technical-docs/circuits.md)
- [Registry](https://docs.openpassport.app/docs/technical-docs/registry.md)