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

# Standard Registry Users, Schemas, and Policies

The Standard Registry is a user that establishes policy requirements and specifications for the quantification, monitoring, reporting, verification, registration, and issuance of project-based emissions, offsets, reductions, and credits. The sections below cover: