> ## 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.

# threadsByExternalId

> Fetch all threads that share the given external ID, returned as a paginated connection. Unlike `threadByExternalId`, this is not scoped to a customer: because `externalId` is only unique per-customer, the same external ID can appear on threads belonging to different customers, and this query returns all of them. Returns an empty connection if there are no matches. Requires the `thread:read` permission.