You can create custom entities for matching data specific to your agent.
For example, you could define a vegetable 
entity type
that can match the types of vegetables
available for purchase with a grocery store agent.
Where to find this data
When building an agent, it is most common to use the Dialogflow ES console ( visit documentation , open console ). The instructions below focus on using the console. To access custom entity data:
- Go to the Dialogflow ES console .
- Select an agent.
- Select Entitiesin the left sidebar menu.
- Select the Customtab for custom entities.
If you are building an agent using the API instead of the console, see the EntityTypes reference . The API field names are similar to the console field names. The instructions below highlight any important differences between the console and the API.
Create custom entities
To create a custom map entity :
- Click Create entity.
- Enter a name for the entity.
- Note that Define synonymsis already checked.
- Click the first row and provide a reference value in the left column.
- Click the next column or press Enterand provide synonyms.
- Continue adding rows for other entity entries.
- Click Save.

Batch operations
You can move, copy, or delete multiple entities using batch operations:
- Copy: Copies selected entities to the target agent.
- Move: Moves selected entities to the target agent.
- Delete: Permanently deletes the selected entities. This cannot be undone.
The following additional options are prompted for copy and move operations:
- Copy related entities: Moves or copies entities used in composite entities .
- Overwrite entities: Overwrites entities with the same name.
To copy, move, or delete multiple entities:
- Hover you mouse over the list and select one or more entities. This reveals the batch options.
- Choose the desired action.
- Select the desired options in the dialog.
- Click Start.
Limitations
The following limitations apply:
- Custom entity type names are unique for each agent.
Entity type names should start with a letter
and can contain the following: A-Z,a-z,0-9,_(underscore),-(dash). Entity reference and synonym values have no such limitation.

