Post comments

When to use this

Pass a public post, video or reel url. Returns the comments Facebook shows logged-out visitors on the post's page, its "most relevant" first page (usually 10), and comment_count, the post's total. There's no cursor: later pages need Facebook's GraphQL, which it refuses to our servers. Replies aren't included; reply_count says how many each comment has.

Parameters

All parameters go in the query string.

Example request

Replace YOUR_API_KEY with your key, or set LURKAPI_KEY for the code. Get a free key.

curl "https://api.lurkapi.com/v1/facebook/post/comments?url=https%3A%2F%2Fwww.facebook.com%2FNASA%2Fposts%2Fpfbid0jzaSu71udHuXXhr9dE2wWtP3B23baKHFfD3dfAKXCoFQ3gCR8UpZa6iErzsiq77zl" \
  -H "x-api-key: YOUR_API_KEY"

const params = new URLSearchParams({
  url: "https://www.facebook.com/NASA/posts/pfbid0jzaSu71udHuXXhr9dE2wWtP3B23baKHFfD3dfAKXCoFQ3gCR8UpZa6iErzsiq77zl",
});
const res = await fetch(`https://api.lurkapi.com/v1/facebook/post/comments?${params}`, {
  headers: { "x-api-key": process.env.LURKAPI_KEY },
});
const data = await res.json();
if (!data.success) throw new Error(`${data.code}: ${data.error}`);
console.log(data.comments);

import os
import requests

res = requests.get(
    "https://api.lurkapi.com/v1/facebook/post/comments",
    params={
        "url": "https://www.facebook.com/NASA/posts/pfbid0jzaSu71udHuXXhr9dE2wWtP3B23baKHFfD3dfAKXCoFQ3gCR8UpZa6iErzsiq77zl",
    },
    headers={"x-api-key": os.environ["LURKAPI_KEY"]},
    timeout=60,
)
data = res.json()
if not data["success"]:
    raise RuntimeError(f"{data['code']}: {data['error']}")
print(data["comments"])

Example response

A real response from this endpoint, captured from the live API and trimmed to a couple of items. Strings over 96 characters (mostly signed media URLs) are cut short and end in ….

{
  "success": true,
  "credits_remaining": 999988,
  "credits_charged": 1,
  "comments": [
    {
      "id": "1862694261574416",
      "text": "This looks like a PS2 cut scene",
      "created_at": 1792197064,
      "author": {
        "id": "pfbid02miHVvvByo5tZubddt29nYwro7DNwUNP4p4qWKEC8hk8oxtsYPnVQdC6tXqhwjwvxl",
        "name": "Alberto Sánchez",
        "url": null
      },
      "reaction_count": 292,
      "reply_count": 2
    },
    {
      "id": "1116632204174565",
      "text": "It's a rocket induced nebula.",
      "created_at": 1792183476,
      "author": {
        "id": "pfbid02uHxufd7XaHVUqtAeSQZZJejKBDV3ZYLCJMKnBNdvjq8dxSvdLaW1Zw79AtRBSZ66l",
        "name": "Christian Bradley Hubbs",
        "url": "https://www.facebook.com/c.b.hubbs.102"
      },
      "reaction_count": 210,
      "reply_count": 7
    }
  ],
  "comment_count": 2565
}

Response fields

Every field of a successful response. [] marks a list: a[].b is the b of each item in a. nullable fields can be null; optional fields can be missing.

Caching and freshness

Responses are cached for up to 5 minutes, so a repeat call within that window can return the same data. It still costs 1 credit.

Errors

Errors return { success: false, error, code, docs } with the HTTP status below. Validation errors, 401/402/429 rejections and 5xx failures are free; not_found is charged (how charging works). All error codes.

Use it in Claude

Once LurkAPI is connected to Claude, this endpoint is the facebook_post_comments tool. Ask in plain English, for example:

Use LurkAPI's facebook_post_comments with url "https://www.facebook.com/NASA/posts/pfbid0jzaSu71udHuXXhr9dE2wWtP3B23baKHFfD3dfAKXCoFQ3gCR8UpZa6iErzsiq77zl" and summarize what you find.

Claude calls facebook_post_comments with arguments like these, and each call costs 1 credit:

{
  "url": "https://www.facebook.com/NASA/posts/pfbid0jzaSu71udHuXXhr9dE2wWtP3B23baKHFfD3dfAKXCoFQ3gCR8UpZa6iErzsiq77zl"
}

Tool results are compact to save tokens: no nulls or empty lists, one URL per image or video, transcripts as plain text unless you pass timestamps=true. A result over 45,000 characters comes in parts: its _note gives the offset for the rest, and later parts are free for 15 minutes. trim=false returns the full response.