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GET
/
api
/
v1
/
post
/
reactions
Get reactions on a post
curl --request GET \
  --url https://api.fetchin.io/api/v1/post/reactions \
  --header 'X-API-Key: <api-key>'
{
  "reactions": [
    {
      "reactionType": "LIKE",
      "actor": {
        "urn": "urn:li:fsd_profile:ACoAABBfDXAB9eK9V6vEHbzfQXZ-wcjke_QuT7g",
        "name": "Kevin Piacentini",
        "headline": "Lead Engineer | Scaled my SaaS to $250K ARR",
        "profileUrl": "https://www.linkedin.com/in/ACoAABBfDXAB9eK9V6vEHbzfQXZ-wcjke_QuT7g",
        "profilePictureUrl": "https://media.licdn.com/dms/image/..."
      }
    },
    {
      "reactionType": "EMPATHY",
      "actor": {
        "urn": "urn:li:fsd_profile:ACoAAElKiMcBWNSGaHLmNaJXyyVbUFfQNxR3jpM",
        "name": "Yasmine Damnati",
        "headline": "Apprentie ingenieur automatisme",
        "profileUrl": "https://www.linkedin.com/in/ACoAAElKiMcBWNSGaHLmNaJXyyVbUFfQNxR3jpM",
        "profilePictureUrl": "https://media.licdn.com/dms/image/..."
      }
    }
  ],
  "hasMore": false
}

​
Endpoint

GET /api/v1/post/reactions

​
Authentication

Include your API key in the request header: 
X-API-Key: your-api-key-here

​
Parameters

​
postUrlOrUrn
string
required
Professional post URL or URN.Examples:
  • https://www.linkedin.com/posts/username_some-post-slug-1234567890-abcd
  • urn:li:activity:7287782484287606784
  • urn:li:ugcPost:7287782484287606784
​
count
integer
default:"100"
Number of reactions to fetch per page.
  • Minimum: 1
  • Maximum: 100
  • Default: 100
​
start
integer
default:"0"
Offset for pagination.
  • Default: 0

​
Response

​
reactions
array
Array of reactions on the post
​
hasMore
boolean
Indicates whether there are more reactions to fetch.

​
Example Request

curl -X GET "https://api.fetchin.io/api/v1/post/reactions?postUrlOrUrn=https://www.linkedin.com/posts/username_post-slug-1234567890-abcd&count=100" \
  -H "X-API-Key: your-api-key-here"

​
Example Response

{
  "reactions": [
    {
      "reactionType": "LIKE",
      "actor": {
        "urn": "urn:li:fsd_profile:ACoAABBfDXAB9eK9V6vEHbzfQXZ-wcjke_QuT7g",
        "name": "Kevin Piacentini",
        "headline": "Lead Engineer | Scaled my SaaS to $250K ARR",
        "profileUrl": "https://www.linkedin.com/in/ACoAABBfDXAB9eK9V6vEHbzfQXZ-wcjke_QuT7g",
        "profilePictureUrl": "https://media.licdn.com/dms/image/..."
      }
    },
    {
      "reactionType": "EMPATHY",
      "actor": {
        "urn": "urn:li:fsd_profile:ACoAAElKiMcBWNSGaHLmNaJXyyVbUFfQNxR3jpM",
        "name": "Yasmine Damnati",
        "headline": "Apprentie ingenieur automatisme",
        "profileUrl": "https://www.linkedin.com/in/ACoAAElKiMcBWNSGaHLmNaJXyyVbUFfQNxR3jpM",
        "profilePictureUrl": "https://media.licdn.com/dms/image/..."
      }
    }
  ],
  "hasMore": false
}

​
Errors

See Error Handling for the full list of error codes and recommended handling.
  • 400 — MISSING_PARAMETER, INVALID_URN
  • 401 — INVALID_API_KEY
  • 404 — POST_NOT_FOUND
  • 429 — RATE_LIMITED, QUOTA_EXHAUSTED
  • 500 — INTERNAL_ERROR
  • 503 — SERVICE_UNAVAILABLE

​
Pagination

To fetch all reactions from a post with many reactions, use offset pagination:
  1. Make an initial request with start=0
  2. If hasMore is true, increment start by count in your next request
  3. Continue until hasMore is false
async function fetchAllReactions(postUrlOrUrn) {
  const allReactions = [];
  let start = 0;
  const count = 100;
  let hasMore = true;

  while (hasMore) {
    const params = new URLSearchParams({ postUrlOrUrn, count: String(count), start: String(start) });

    const response = await fetch(
      `https://api.fetchin.io/api/v1/post/reactions?${params}`,
      { headers: { 'X-API-Key': 'your-api-key-here' } }
    );

    const data = await response.json();
    allReactions.push(...data.reactions);
    hasMore = data.hasMore;
    start += count;
  }

  return allReactions;
}

​
Notes

This endpoint consumes 1 credit from your monthly quota per API call, regardless of the count parameter value.
You can pass either a professional post URL (e.g. https://www.linkedin.com/posts/...) or a post URN (e.g. urn:li:activity:...). When a URL is provided, the API automatically resolves it to the correct activity URN.

Authorizations

​
X-API-Key
string
header
required

Query Parameters

​
postUrlOrUrn
string
required

Professional post URL or URN

Example:

"https://www.linkedin.com/posts/username_post-slug-1234567890-abcd"

​
count
integer
default:100

Number of reactions to fetch (default: 100)

Required range: 1 <= x <= 100
​
start
integer
default:0

Offset for pagination (default: 0)

Required range: x >= 0

Response

Successfully fetched post reactions

​
reactions
object[]
​
hasMore
boolean

Whether more reactions are available