Create a comment on a post

Add a comment to a post. Supports @mentions using the format @[Display Name](userId). Tagged users must be workspace members. The commenter and any tagged users are automatically subscribed to the post.

POST/posts/{postId}/comments

Authorization

AuthorizationBearer token · headerrequired

API key authentication. Generate an API key from your workspace settings.

Path parameters

postIdstring<uuid>required

Post ID (UUID)

Request body

requiredapplication/json

messagestringrequired

The comment text. Cannot be empty. Supports @mentions using the format @[Display Name](userId)

min length 1

Responses

200

Comment created successfully

idstring<uuid>

Unique identifier for the comment

messagestring

The comment text. Mentions use the format @[Display Name](userId)

postIdstring<uuid>

The post this comment belongs to

createdAtstring<date-time>

When the comment was created

updatedAtstring<date-time>

When the comment was last updated

userCommentUser

User who created a comment

Show properties

idstring<uuid>

firstNamestring | null

lastNamestring | null

emailstring<email>

400

Bad Request - Invalid input parameters

codestring

messagestring

dataobject

Show properties

errorsobject

401

Unauthorized - Missing or invalid API key

codestring

messagestring

404

Not Found - Resource does not exist

codestring

messagestring

Try it

Server

Base URLCustom base URLOverrides the selected server when set.

Authorization

Bearer tokenRemember on this deviceInclude my values in samples

Parameters

postIdpath*Post ID (UUID)

Bodyapplication/json

messagestring*The comment text. Cannot be empty. Supports @mentions using the format @[Display Name](userId)

Request

curl -X POST 'https://app.tryordinal.com/api/v1/posts/497f6eca-6276-4993-bfeb-53cbbbba6f08/comments' \
  -H 'Authorization: Bearer YOUR_TOKEN' \
  -H 'Content-Type: application/json' \
  -d '{
  "message": "Looks good! @[Jane Smith](550e8400-e29b-41d4-a716-446655440002) can you review the first paragraph?"
}'

const response = await fetch("https://app.tryordinal.com/api/v1/posts/497f6eca-6276-4993-bfeb-53cbbbba6f08/comments", {
  method: "POST",
  headers: {
    "Authorization": "Bearer YOUR_TOKEN",
    "Content-Type": "application/json"
  },
  body: "{\n  \"message\": \"Looks good! @[Jane Smith](550e8400-e29b-41d4-a716-446655440002) can you review the first paragraph?\"\n}"
});

import requests

response = requests.post(
    "https://app.tryordinal.com/api/v1/posts/497f6eca-6276-4993-bfeb-53cbbbba6f08/comments",
    headers={
        "Authorization": "Bearer YOUR_TOKEN",
        "Content-Type": "application/json"
    },
    data="{\n  \"message\": \"Looks good! @[Jane Smith](550e8400-e29b-41d4-a716-446655440002) can you review the first paragraph?\"\n}",
)

Response

{
  "id": "b2c3d4e5-6f7a-8b9c-0d1e-2f3a4b5c6d7e",
  "message": "Looks good! @[Jane Smith](550e8400-e29b-41d4-a716-446655440002) can you review the first paragraph?",
  "postId": "d4f8e2a1-3b7c-4e9d-8f2a-1c5b9e7d3a6f",
  "createdAt": "2026-02-04T11:00:00.000Z",
  "updatedAt": "2026-02-04T11:00:00.000Z",
  "user": {
    "id": "550e8400-e29b-41d4-a716-446655440001",
    "firstName": "John",
    "lastName": "Doe",
    "email": "john@example.com"
  }
}

{
  "code": "BAD_REQUEST",
  "message": "Bad Request",
  "data": {
    "errors": {
      "publishAt": [
        "Invalid date format"
      ],
      "status": [
        "Invalid enum value"
      ]
    }
  }
}

{
  "code": "UNAUTHORIZED",
  "message": "Invalid or unauthorized API key"
}

{
  "code": "NOT_FOUND",
  "message": "Post not found or does not belong to this workspace"
}