> ## Documentation Index
> Fetch the complete documentation index at: https://www.plain.com/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# threadFieldSchema

> Fetches a single thread field schema by its ID. Returns null if no schema with the given ID exists. Selecting the `createdBy`/`updatedBy` actor down to its `user` additionally requires the `user:read` permission.