# What? When creating circuits and proofs, check if the SINDRI_META environment variable is set and use its value in the `meta` option for those methods. This behavior should match the [sindri-js](https://github.com/Sindri-Labs/sindri-js/blob/e06a2a9989bd038645cfdf2197d83379f65e56b3/src/lib/utils.ts#L5-L122) implementation.
