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

# Sheets

> Access individual pages extracted from PDF drawings.

Sheets are individual pages extracted from a [Drawing](/cms-api/resources/drawings). Each sheet is analyzed to detect [Blocks](/cms-api/resources/blocks) and extract metadata like sheet numbers, titles, and disciplines. See [Sheets](/guides/concepts/sheets) for the full concept.

## Endpoints

| Method  | Endpoint                                 | Description           |
| ------- | ---------------------------------------- | --------------------- |
| `GET`   | [`/sheets`](/cms-api/sheets/list)        | List sheets           |
| `GET`   | [`/sheets/{id}`](/cms-api/sheets/get)    | Get sheet details     |
| `PATCH` | [`/sheets/{id}`](/cms-api/sheets/update) | Update sheet metadata |

<Note>
  Sheets are created automatically during drawing processing. You cannot create or delete sheets directly.
</Note>

## Sheet Object

| Field          | Type     | Description                                   |
| -------------- | -------- | --------------------------------------------- |
| `id`           | string   | Unique identifier (e.g., `sht_01JABCD123`)    |
| `drawing_id`   | string   | Parent [Drawing](/cms-api/resources/drawings) |
| `index`        | integer  | Page number (0-indexed)                       |
| `uri`          | string   | High-resolution image URL                     |
| `sheet_number` | string   | Extracted sheet number (e.g., A-101)          |
| `title`        | string   | Extracted sheet title                         |
| `discipline`   | string   | Inferred discipline                           |
| `metadata`     | object   | Additional extracted data                     |
| `created_at`   | datetime | Creation timestamp                            |
| `updated_at`   | datetime | Last modification timestamp                   |

## Disciplines

Disciplines are inferred from the sheet number prefix:

| Prefix | Discipline      |
| ------ | --------------- |
| A      | Architectural   |
| S      | Structural      |
| M      | Mechanical      |
| E      | Electrical      |
| P      | Plumbing        |
| FP     | Fire Protection |
| C      | Civil           |
| L      | Landscape       |
| G      | General         |