> For the complete documentation index, see [llms.txt](https://docs.syncmate.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.syncmate.com/getting-started/workflow-env-variables.md).

# Workflow Env Variables

Workflow environment variables is a secure way of storing your sensitive data that you need to reference in the action JavaScript expressions.

<figure><img src="https://296734879-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FQlDOQVFjSsWJSm47zpFE%2Fuploads%2FqzyUuRwLh7My25BGYhNr%2FWorkflow%20environment%20variables.png?alt=media&amp;token=88863a80-5002-4aef-936c-c78421f2a4cd" alt=""><figcaption></figcaption></figure>

Later on in the code you can access those predefined environment variables, for example `env.apiKey` in this case.

<div align="left"><figure><img src="https://296734879-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FQlDOQVFjSsWJSm47zpFE%2Fuploads%2FUOrtLyAlBQ0lvTGzoFXA%2FHTTP%20headers.png?alt=media&amp;token=0904b3c6-aa17-45c8-bc39-072b006032fe" alt=""><figcaption></figcaption></figure></div>