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

# Block

> The Block interface shape representing one user blocking another

A block record represents a directed edge where one user (the blocker) has blocked another (the blocked). A block simply exists or doesn't — there is no status column. Blocks are part of the trust & safety [moderation bundle](/sdk/moderation/overview#blocking); the table is provisioned only in projects that have that bundle installed.

Blocks are **private to the blocker** — only the blocker can read their own block list, and the block-status read is outbound-only, so the block is never disclosed to the blocked user.

## Properties

| Property    | Type     | Description                               |
| ----------- | -------- | ----------------------------------------- |
| `id`        | `string` | Unique block identifier (UUID).           |
| `blockerId` | `string` | The ID of the user who created the block. |
| `blockedId` | `string` | The ID of the user being blocked.         |
| `createdAt` | `Date`   | When the block was created.               |

<Note>
  The pair `(blockerId, blockedId)` is unique. Blocking someone already blocked is an idempotent no-op. Deleting either user removes their block edges in both directions.
</Note>

## See Also

* [Moderation — Blocking](/sdk/moderation/overview#blocking) — enforcement behavior
* [useBlockManager hook](/hooks/blocks/use-block-manager)
* [Block User](/api-reference/users/blocks/block-user)
* [Fetch Blocked Users](/api-reference/blocks/fetch-blocks)