# Set document properties

`PATCH /v1/documents/{id}/properties`

Merges `set` into the document's properties and removes the keys in `unset`.

Scope: `docs:write`. Undoable.

## Request

```bash
curl -X PATCH "https://api.lydie.co/v1/documents/01JCQ3V5MZ8G4ZK2X7T9R6N1PB/properties" \
  -H "Authorization: Bearer $LYDIE_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{
    "set": {
      "status": "done"
    },
    "unset": [
      "due"
    ]
  }'
```

## Path parameters

- `id` (ULID, required)

## Body

- `set` (object, optional): Default: `{}`.
- `unset` (string[], optional): Default: `[]`.

## Response

- `id` (ULID, required)
- `workspaceId` (string, required): (1–64 chars)
- `parentId` (ULID, required, nullable)
- `title` (string, required): (1–255 chars)
- `sortKey` (string, required): (1–256 chars)
- `properties` (object, required)
- `createdAt` (timestamp, required)
- `updatedAt` (timestamp, required)
- `deletedAt` (timestamp, required, nullable)
- `createdBy` (string, optional, nullable): (≥ 1 chars)
- `updatedBy` (string, optional, nullable): (≥ 1 chars)

```json
{
  "id": "01JCQ3V5MZ8G4ZK2X7T9R6N1PB",
  "workspaceId": "01JCQ3TZ0WJ8K4M2X7T9R6N1PA",
  "parentId": null,
  "title": "Meeting notes",
  "sortKey": "a0",
  "properties": {
    "status": "draft"
  },
  "createdAt": "2026-11-12T09:30:00.000Z",
  "updatedAt": "2026-11-12T09:30:00.000Z",
  "deletedAt": null,
  "createdBy": null,
  "updatedBy": null
}
```

Errors use the envelope described at https://developers.lydie.co/errors.md.