> ## 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 |


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