# ESMValCore

> ESMValCore is the core of ESMValTool: it finds, fixes, and preprocesses Earth system model data according to a YAML recipe and runs diagnostic scripts.


2026, ESMValTool Development Team

## Pages in this subsection

- [How-to guides](index.html.md): This is work in progress as we are currently working on adding more
- [How to make a release](how-to-make-a-release.html.md): The release manager makes the release, assisted by the release manager of the

## Optional

- [Top-level llms.txt](../llms.txt): Complete documentation index.