For AI agents: markdown of this page — /docs-content-en/entities/task-comments/delete.md documentation index — /llms.txt

Delete comment

DELETE /v1/tasks/:taskId/comments/:id

Deletes a task comment. Available only on Bitrix24 accounts with the old task card: on the new card the method returns 410 GONE. A deleted comment cannot be restored through the API.

Parameters

Parameter Type Required Description
taskId (path) number yes Task ID
id (path) number yes Comment ID

Examples

curl — personal key

Terminal 
curl -X DELETE "https://vibecode.bitrix24.com/v1/tasks/289/comments/36559" \
  -H "X-Api-Key: YOUR_API_KEY"

curl — OAuth app

Terminal 
curl -X DELETE "https://vibecode.bitrix24.com/v1/tasks/289/comments/36559" \
  -H "X-Api-Key: YOUR_APP_KEY" \
  -H "Authorization: Bearer USER_SESSION_TOKEN"

JavaScript — personal key

javascript 
const res = await fetch('https://vibecode.bitrix24.com/v1/tasks/289/comments/36559', {
  method: 'DELETE',
  headers: {
    'X-Api-Key': 'YOUR_API_KEY',
  },
})

if (res.status === 204) {
  console.log('Comment deleted')
} else if (res.status === 410) {
  const { error } = await res.json()
  console.log('New card — delete unavailable:', error.message)
}

JavaScript — OAuth app

javascript 
const res = await fetch('https://vibecode.bitrix24.com/v1/tasks/289/comments/36559', {
  method: 'DELETE',
  headers: {
    'X-Api-Key': 'YOUR_APP_KEY',
    'Authorization': 'Bearer USER_SESSION_TOKEN',
  },
})

Response

On a successful delete on the old card, the HTTP status 204 No Content is returned with an empty body — success is checked by the status. On the new card, instead of 204 a 410 GONE with a JSON body is returned (see below).

Response example

Old card:

HTTP/1.1 204 No Content

Error response example

410 — new task card (method unavailable):

JSON 
{
  "success": false,
  "error": {
    "code": "GONE",
    "message": "Bitrix24 disabled update/delete for task comments in the new task card. To remove a comment, delete the source task or ask a portal admin to remove the message via the chat UI.",
    "hint": "Verified against apidocs.bitrix24.com on 2026-05-09 — the modern task-chat API accepts only new messages, no edit or delete."
  }
}

Errors

HTTP Code Description
400 INVALID_PARAMS taskId or id are not positive integers
410 GONE The task was created on the new card — deleting a comment is unavailable on the Bitrix24 side
403 SCOPE_DENIED The API key does not have the task scope
401 TOKEN_MISSING The API key has no configured tokens

Full list of common API errors — Errors.

Known specifics

Alternative for the new card. There is no way to delete a posted comment programmatically. If the content needs to be hidden — delete the whole task (DELETE /v1/tasks/:id), or ask the Bitrix24 account admin to remove the message via the chat UI.

See also