Add a comment to a card
POST
/boards/{board}/cards/{card}/comments
const url = 'https://projects.work.optidata.cloud/api/boards/1/cards/1/comments';const options = { method: 'POST', headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'}, body: '{"content":"Looks good — ship it 🚀"}'};
try { const response = await fetch(url, options); const data = await response.json(); console.log(data);} catch (error) { console.error(error);}curl --request POST \ --url https://projects.work.optidata.cloud/api/boards/1/cards/1/comments \ --header 'Authorization: Bearer <token>' \ --header 'Content-Type: application/json' \ --data '{ "content": "Looks good — ship it 🚀" }'Adds a comment authored by the caller. Requires interact permission
(comment-create policy). Blocked with 422 while the card has
unsatisfied required custom fields.
Authorizations
Section titled “Authorizations”Parameters
Section titled “ Parameters ”Path Parameters
Section titled “Path Parameters”board
required
integer
Board id.
card
required
integer
Card id (must belong to the board).
Request Bodyrequired
Section titled “Request Bodyrequired”Media typeapplication/json
object
content
required
Comment body (may contain @-mention markup).
string
Example
{ "content": "Looks good — ship it 🚀"}Responses
Section titled “ Responses ”The created comment.
Media typeapplication/json
object
id
integer
card_id
integer
user_id
Author user id.
integer
content
string
created_at
string format: date-time
updated_at
string format: date-time
Example
{ "id": 7001, "card_id": 9001, "user_id": 7, "content": "Looks good — ship it 🚀", "created_at": "2026-07-20T14:05:00.000000Z", "updated_at": "2026-07-20T14:05:00.000000Z"}Missing, invalid or expired bearer passport.
Media typeapplication/json
object
error
string
Example
{ "error": "JWT passport exception: Missing bearer token in request"}The authenticated user lacks the required board permission.
Media typeapplication/json
object
message
string
Example
{ "message": "This action is unauthorized."}Resource not found, or a nested resource does not belong to its parent in the path.
Media typeapplication/json
object
message
string
Example
{ "message": "Not found."}Validation failed.
Media typeapplication/json
object
message
First validation error message.
string
errors
Map of field name → list of error messages.
object
key
additional properties
Array<string>
Example
{ "message": "The name field is required.", "errors": { "name": [ "The name field is required." ] }}