> For the complete documentation index, see [llms.txt](https://guides.regen.network/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://guides.regen.network/technical-documentation/data-access-and-apis.md).

# Data Access & APIs

Regen’s data access layer exposes registry information through a combination of **metadata resolution APIs** and **indexed application APIs**. Together, these interfaces allow developers to retrieve the metadata associated with credit classes, projects, and credit batches, as well as the off-chain information about projects, and retirement certificates stored the Regen Application server and indexing backend.

This section provides the essential endpoints for accessing registry data in the current version of the system.


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