Get Mastodon post replies

Try in Playground

Retrieve the conversation around a public Mastodon post: the posts it replies to and up to 60 replies. Rebuild the reply tree from in_reply_to_id.

GET/v1/mastodon/post/repliesx-api-key

Headers

Get your API key

x-api-keystringrequiredheader

Your ScrapeAtlas customer key. Create one on /account/ and set SCRAPEATLAS_API_KEY.

Query parameters

urlstringrequiredquery

Required post URL on a supported server: https://server/@user/ID, https://server/@user@remote/ID (that server's copy of a remote post) or https://server/users/user/statuses/ID. Query strings and fragments are ignored.

max 2048 chars

Examplehttps://mastodon.social/@example/113000000000000001

Response fields

requestIdstring

Request correlation UUID.

Upstream requests, decoded response bytes and elapsed milliseconds.

accounting.upstreamRequestsinteger

Always included.

≥ 0

accounting.responseBytesinteger

Always included.

≥ 0

accounting.durationMsnumber

Always included.

≥ 0

successboolean

True when usable data is returned; inspect status and coverage for omissions.

statusenum

success, partial, failed or challenged. HTTP 200 can be partial.

one of: success, partial

sourceUrlstring

Public Mastodon page the data describes.

absolute HTTPS URL

fetchedAtstring

UTC retrieval time.

serverstring

Mastodon server that answered. IDs, cursors and counters are as that server reports them.

min 1 chars

complete is false when a warning names an omission, such as federated_view, counters_hidden or reply_limit.

coverage.sourcestring

Always included.

coverage.completeboolean

Always included.

coverage.warningsstring[]

Always included.

ancestorsobject[]

Posts above the requested post, oldest first, at most 40.

up to 40 items

repliesobject[]

Replies below the requested post in conversation order, at most 60. Each reply’s in_reply_to_id names the requested post or another returned reply.

up to 60 items

HTTP 200 returns the success variant. Check status: partial means usable data with warnings, and failed or challenged requests carry a failure object described in Errors & responses.

Error codes

HTTP	failure.code	Meaning
200	`partial`	Usable data with federated_view, counters_hidden, reply_limit, ancestor_limit, activity_unavailable or unsupported_*_omitted warnings.
400	`invalid_request`	Missing, duplicate, unsafe or unsupported parameters, a post URL outside the supported servers or an invalid cursor.
401	`unauthorized`	Missing or invalid worker API key.
403	`restricted_page`	The server does not share this data without login, or the account hides its followers and following.
404	`not_found`	Unknown or removed account, post or hashtag.
429	`upstream_rate_limited`	The server’s rate limit is exhausted for every available network identity.
502	`upstream_challenged`	The server answered with a challenge or non-JSON page.
502	`unsupported_page`	Malformed, mismatched or looping source data.
502	`response_too_large` `payload_too_complex`	Response exceeded byte or parsing limits.
502	`unsafe_redirect` `request_limit` `upstream_error`	Bounded source retrieval could not complete.
503	`busy`	All worker slots and queue places are occupied.
504	`timeout`	Total request deadline expired.

Code example

curl "https://api.scrapeatlas.com/v1/mastodon/post/replies?url=https%3A%2F%2Fmastodon.social%2F%40example%2F113000000000000001" \
  -H "x-api-key: YOUR_API_KEY"

const response = await fetch(
  "https://api.scrapeatlas.com/v1/mastodon/post/replies?url=https%3A%2F%2Fmastodon.social%2F%40example%2F113000000000000001",
  {
    headers: {
      "x-api-key": "YOUR_API_KEY"
    }
  }
);

const data = await response.json();
console.log(data.status, data);

type Result = {
  status: "success" | "partial" | "failed" | "challenged";
  requestId: string;
  [field: string]: unknown;
};

const response = await fetch(
  "https://api.scrapeatlas.com/v1/mastodon/post/replies?url=https%3A%2F%2Fmastodon.social%2F%40example%2F113000000000000001",
  {
    headers: {
      "x-api-key": process.env.SCRAPEATLAS_API_KEY!
    }
  }
);

const data = (await response.json()) as Result;
if (data.status === "failed" || data.status === "challenged") {
  throw new Error(`Mastodon request failed: ${data.requestId}`);
}
console.log(data);

import requests

response = requests.get(
    "https://api.scrapeatlas.com/v1/mastodon/post/replies",
    headers={"x-api-key": "YOUR_API_KEY"},
    params={
        "url": "https://mastodon.social/@example/113000000000000001"
    },
    timeout=60,
)
data = response.json()
print(data["status"], data)

package main

import (
	"encoding/json"
	"fmt"
	"net/http"
)

func main() {
	req, _ := http.NewRequest("GET", "https://api.scrapeatlas.com/v1/mastodon/post/replies?url=https%3A%2F%2Fmastodon.social%2F%40example%2F113000000000000001", nil)
	req.Header.Set("x-api-key", "YOUR_API_KEY")
	resp, err := http.DefaultClient.Do(req)
	if err != nil {
		panic(err)
	}
	defer resp.Body.Close()

	var data map[string]interface{}
	json.NewDecoder(resp.Body).Decode(&data)
	fmt.Println(data["status"], data)
}

import java.net.URI;
import java.net.http.HttpClient;
import java.net.http.HttpRequest;
import java.net.http.HttpResponse;

public class Main {
    public static void main(String[] args) throws Exception {
        var client = HttpClient.newHttpClient();
        var request = HttpRequest.newBuilder()
            .uri(URI.create("https://api.scrapeatlas.com/v1/mastodon/post/replies?url=https%3A%2F%2Fmastodon.social%2F%40example%2F113000000000000001"))
            .GET()
            .header("x-api-key", "YOUR_API_KEY")
            .build();
        var response = client.send(request, HttpResponse.BodyHandlers.ofString());
        System.out.println(response.body());
    }
}

Use your sa_live_… customer key at https://api.scrapeatlas.com.

Responses

Successful result. Synthetic example validated against the runtime contract.

{
  "success": true,
  "status": "success",
  "requestId": "00000000-0000-4000-8000-000000000001",
  "sourceUrl": "https://mastodon.social/@example/113000000000000001",
  "fetchedAt": "2026-09-29T00:00:00.000Z",
  "server": "mastodon.social",
  "coverage": {
    "source": "public_api",
    "complete": true,
    "warnings": []
  },
  "accounting": {
    "upstreamRequests": 2,
    "responseBytes": 18000,
    "durationMs": 420
  },
  "ancestors": [],
  "replies": [
    {
      "id": "113000000000000002",
      "created_at": "2026-09-28T12:00:00.000Z",
      "in_reply_to_id": "113000000000000001",
      "in_reply_to_account_id": "1001",
      "sensitive": false,
      "spoiler_text": "",
      "visibility": "public",
      "language": "en",
      "uri": "https://fosstodon.org/users/friend/statuses/112999999999999998",
      "url": "https://mastodon.social/@friend@fosstodon.org/113000000000000002",
      "replies_count": 0,
      "reblogs_count": 0,
      "favourites_count": 2,
      "quotes_count": 0,
      "edited_at": null,
      "content": "<p>Synthetic reply</p>",
      "reblog": null,
      "application": null,
      "account": {
        "id": "2002",
        "username": "friend",
        "acct": "friend@fosstodon.org",
        "handle": "friend@fosstodon.org",
        "display_name": "Friend",
        "url": "https://fosstodon.org/@friend",
        "avatar": "https://files.example.test/avatar.png",
        "bot": false
      },
      "media_attachments": [],
      "mentions": [],
      "tags": [],
      "emojis": [],
      "card": null,
      "poll": null
    }
  ]
}

Missing, duplicate, unsafe or unsupported parameters, a post URL outside the supported servers or an invalid cursor.

{
  "requestId": "9d2f1c0a-6b1e-4c7d-9a8e-2f3b4c5d6e7f",
  "accounting": {
    "upstreamRequests": 0,
    "responseBytes": 0,
    "durationMs": 0
  },
  "success": false,
  "status": "failed",
  "failure": {
    "code": "invalid_request",
    "message": "Invalid request: missing, duplicate, unsupported or malformed parameters."
  }
}