# Create chat message

**POST /data/entities/{entity_id}/chat/messages**

Create a new chat message for a specific entity. Supports both JSON and form data with optional file attachments. Only chat participants can send messages.


## Servers
- http://api.example.com: http://api.example.com ()


## Authentication methods
- Jwt authorization


## Parameters

### Path parameters
- **entity_id** ()
  ID of the entity related to the chat


### Body: application/json (object)

- **message** (string)
  Message content to send


## Responses
### 201
Chat message successfully created

#### Body: application/json (object)
- **id** (string(uuid))
  Created message unique identifier
- **message** (string)
  Message content
- **person_id** (string(uuid))
  ID of the message sender
- **created_at** (string(date-time))
  Message creation timestamp
- **attachments** (array[object])
  Array of attached files


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