We provide lot of routes to lists posts of a users or a company, retrieve comments of theses posts, retrieve who like this post, you can like the post or a comment or directly comment post. You can use search to search post with some keywords and filters too.

LinkedIn use multiple id for same post, its important to use "social_id" of the post on all action interaction to be 100% reliable, you can get it from list of posts of a user or if you have only an url of a post, you need to take id of post in URL, use retrieve post route with this id and take in result "social_id" to list or add any comment or reaction.

Example from URL

For the following post URL : https://www.linkedin.com/posts/unipile_nocode-automation-solopreneurs-activity-7332661864792854528-hcGT

You need to retrieve id part in URL 7332661864792854528 to perform retrieve post request.

For URL contain ugcPost (linkedin.com/posts/xxx-ugcPost-7336013677930006817-6jfq) you need to use this format : urn:li:ugcPost:7336013677930006817

curl --request GET \
  --url 'https://apiX.unipile.com:XXXX/api/v1/posts/7332661864792854528/?account_id=7ioiu6zHRO67yQBazvXDuQ' \
  --header 'X-API-KEY: XXXX'

{
  "object": "Post",
  "provider": "LINKEDIN",
  "social_id": "urn:li:activity:7332661864792854528",
  "share_url": "https://www.linkedin.com/posts/unipile_nocode-automation-solopreneurs-activity-7332661864792854528-hcGT?utm_source=social_share_send&utm_medium=member_desktop_web&rcm=ACoAAAcDMMQBODyLwZrRcgYhrkCafURGqva0U4E",
  "date": "3d",
  "parsed_datetime": "2025-05-26T19:01:02.468Z",
  "comment_counter": 0,
  "impressions_counter": 0,
  "reaction_counter": 6,
  "repost_counter": 0,
  "permissions": {
    "can_post_comments": true,
    "can_react": true,
    "can_share": true
  },
  "text": "What’s the #1 automation you rely on as a solo founder or no-code builder?\n\nWhether you're managing outreach, lead [...]",
  "attachments": [
    {
      "id": "D4D22AQE5ozOIW8_vfQ",
      "sticker": false,
      "size": { "height": 1002, "width": 800 },
      "unavailable": false,
      "type": "img",
      "url": "https://media.licdn.com/dms/image/v2/D4D22AQE5ozOIW8_vfQ/feedshare-shrink_800/B4DZb9tG7dHEAg-/0/1748013186578?e=1751500800&v=beta&t=4h3iZrbqUdd87EYUeISJ9wcw9fea8pMT9ONNId8hC3o"
    }
  ],
  "author": {
    "public_identifier": "unipile",
    "id": null,
    "name": "Unipile",
    "is_company": true
  },
  "is_repost": false,
  "id": "7332661864792854528"
}

In result you need to use "social_id":"urn:li:activity:7332661864792854528" to add or list comment or reaction
Example post a comment on this post.

curl --request POST \
  --url https://apiX.unipile.com:XXXX/api/v1/posts/urn:li:activity:7332661864792854528/comments \
  --header 'Content-Type: application/json' \
  --header 'X-API-KEY: XXXX' \
  --data '{
  "account_id": "7ioiu6zHRO67yQBazvXDuQ",
  "text": "Hey",
}'

Mentions & Thread comment

You can reply to a specific comment using "comment_id" parameter and use mentions with this syntax/

curl --request POST \
  --url https://apiX.unipile.com:XXXX/api/v1/posts/urn:li:activity:7332661864792854528/comments \
  --header 'Content-Type: application/json' \
  --header 'X-API-KEY: XXXX' \
  --data '{  
"account_id": "7ioiu6zHRO67yQBazvXDuQ",  
"text": "Hi {{ 0 }}, thanks",  
"comment_id": "7335000001439513601",  
"mentions": [  
{  
"name": "John Doe",  
"profile_id": "ACoAASss4UBzQV9fDt_ziQ45zzpCVnAhxbW"  
}  
]  
}'

Available actions on Posts :

Create a post : https://developer.unipile.com/reference/postscontroller_createpost

Add reaction : https://developer.unipile.com/reference/postscontroller_addpostreaction

Comment a post : https://developer.unipile.com/reference/postscontroller_sendcomment

List reactions : https://developer.unipile.com/reference/postscontroller_listallreactions

List Comments : https://developer.unipile.com/reference/postscontroller_listallcomments

List all post of a user or a company : https://developer.unipile.com/reference/userscontroller_listallposts

Retrieve a post : https://developer.unipile.com/reference/postscontroller_getpost