Reply to conversation
Send a reply to the customer on the channel of the last message.
POST https://cotlet.dev/api/v1/kustomer/conversations/{conversation_id}/replies
write Confirm
Sends a reply in the conversation, which reaches the customer on the channel of the last message. A reply is limited to 10,240 characters on email and chat, 1,600 on text/SMS and 2,000 on Facebook DM, and the call fails with the limit if your text is longer. The conversation status is not changed, so use snooze_conversation or mark_conversation_done after it. By default you confirm each call; you can switch that off for this tool.
Parameters
| Name | Type | Description |
|---|---|---|
| conversation_id string required | string | Conversation ID from search_conversations. |
| body string required | string | Reply text, sent to the customer. |
Request
curl -X POST https://cotlet.dev/api/v1/kustomer/conversations/6718d2e4a1b2c3d4e5f60733/replies \
-H "Authorization: Bearer $COTLET_API_KEY" \
-H "Content-Type: application/json" \
-d '{"body":"Hi Dana, just checking in. To fix the export we still need the order number from your confirmation email. Reply here when you have it."}'result = client.call("kustomer", "reply_to_conversation", {"conversation_id":"6718d2e4a1b2c3d4e5f60733","body":"Hi Dana, just checking in. To fix the export we still need the order number from your confirmation email. Reply here when you have it."})const result = await cotlet.call('kustomer', 'reply_to_conversation', {"conversation_id":"6718d2e4a1b2c3d4e5f60733","body":"Hi Dana, just checking in. To fix the export we still need the order number from your confirmation email. Reply here when you have it."});cotlet call kustomer reply_to_conversation --data '{"conversation_id":"6718d2e4a1b2c3d4e5f60733","body":"Hi Dana, just checking in. To fix the export we still need the order number from your confirmation email. Reply here when you have it."}'Example response
{
"conversation_id": "6718d2e4a1b2c3d4e5f60733",
"message_id": "6720b1c7a1b2c3d4e5f60844",
"channel": "email",
"direction": "out",
"status": "snoozed",
"created_at": "2026-10-17T09:00:00Z"
}