# Delete a library block

> The delete_library_entry MCP tool: delete a library block.

`delete_library_entry` · writes · destructive

[REST: `DELETE /v1/library/entries/{entryId}`](https://api.bymundi.com/docs/reference/library.entries.delete.md)

## What the model reads

Deletes a library entry. Trips that already inserted it keep their copy. undo_change re-creates it, same id.

Permissions: catalog:write.
Undo: the result names a change id; undo_change reverts it.

## Input

| Field | Type | Required | Description |
|---|---|---|---|
| `entryId` | uuid | yes |  |

## Input schema (JSON)

```json
{
  "type": "object",
  "properties": {
    "entryId": {
      "type": "string",
      "format": "uuid"
    }
  },
  "required": [
    "entryId"
  ],
  "additionalProperties": false
}
```