# Send a message in a conversation

Send a message in a domain conversation. Messages are encrypted at rest.

Endpoint: POST /mcp/v1/actions/ud_lead_message_send
Version: 1.0.0
Security: bearerAuth

## Request fields (application/json):

  - `conversationId` (number, required)
    The conversation ID

  - `content` (string, required)
    Message content (1-1000 characters)

## Response 200 fields (application/json):

  - `message` (object)

  - `message.id` (number)
    Message ID

  - `message.content` (string)

  - `message.senderUserId` (number)

  - `message.createdAt` (string)

  - `conversationId` (number)


## Response 401 fields