SocialToAIStart freeConsole
POST/v1/call/x.mentions

X (Twitter) user mentions API

Only on X.

The X (Twitter) user mentions API returns a page of the posts that mention an X user, newest first. One call costs 4 credits ($0.008 to $0.013 depending on the pack); failed calls are free. Call it over HTTP or from your AI client over MCP. Last tested 2026-10-17.

Start for freeSign in to run
100 credits on sign-up, no card needed
4 creditsper call
Up to 20 per pageone page per call
2026-10-17last tested
1008 Bsample response, 1 item

Last updated:

Request and response

curl https://api.socialtoai.com/v1/call/x.mentions \  -H "Authorization: Bearer $SOCIALTOAI_KEY" \  -H "Content-Type: application/json" \  -d '{    "username": "NASA"  }'
import osimport requestsresponse = requests.post(    "https://api.socialtoai.com/v1/call/x.mentions",    headers={"Authorization": f"Bearer {os.environ['SOCIALTOAI_KEY']}"},    json={        "username": "NASA",    },)print(response.json())
# Connected over MCP? Ask in plain words.Use the X user mentions interface (x.mentions) with username: NASA.# Your AI calls the call tool with:{  "username": "NASA"}
Sign in to run4 creditsOpens in the Playground with these parameters after you sign in. It never runs by itself.
200 OK1008 B4 credits
{  "op": "x.mentions",  "platform": "x",  "status": "ok",  "items": [    {      "platform": "x",      "id": "…",      "ref": "…",      "approx": [],      "type": "content",      "url": "https://example.com/…",      "format": "text",      "title": null,      "text": "…",      "published_at": "2026-10-12T10:42:39.000Z",      "author": {        "id": "…",        "username": "…",        "name": "…",        "verified": true,        "followers": 49937      },      "metrics": {        "likes": 0,        "comments": 0,        "shares": null,        "collects": 0,        "views": 155,        "reposts": 0      },      "images": [],      "hashtags": [],      "is_pinned": null    }  ],  "unavailable": ["title", "metrics.shares", "is_pinned"],  "page": {    "has_more": true,    "cursor": "cur_…",    "cursor_expires_at": "2026-10-12T19:35:48.000Z"  },  "cost_credits": 4}
@…·49,937 followers·
likes 0comments 0shares nullcollects 0views 155reposts 0

Names and text were removed from the sample; the numbers are as recorded.

Sample data1 of the 20 items recorded

2 parameters.
1 required.

Send them as a JSON body with POST. Your key goes in the Authorization header, never in the URL.

NameTypeRequiredDefaultDescription
usernamestringRequired—X handle, without the @
cursorstringOptional—Pass page.cursor from the last response to get the next page.

Where to get what you send.

username

X handle, without the @ (e.g. NASA)

Every item these return carries its username; send it as it is:

The fields of each item.
What X cannot give is marked.

FieldTypeMeaning
items[].urlstringA link that opens the item.
items[].formatstringvideo, image, text or article.
items[].titlestringalways nullThe title.
items[].textstringThe body text or caption.
items[].published_atstringWhen it was published, ISO 8601 in UTC.
items[].author.idstringThe author's account ID.
items[].author.usernamestringThe author's handle.
items[].author.namestringThe author's display name.
items[].author.verifiedbooleanWhether the author is verified.
items[].author.followersintegerThe author's follower count.
items[].metrics.likesintegerLikes.
items[].metrics.commentsintegerComments.
items[].metrics.sharesintegeralways nullShares.
items[].metrics.collectsintegerSaves.
items[].metrics.viewsintegerViews or plays.
items[].metrics.repostsintegerReposts.
items[].imagesstring[]Image addresses.
items[].hashtagsstring[]Hashtags, without the #.
items[].is_pinnedbooleanalways nullWhether the author pinned it.
nullFields X cannot give

Read null as “X did not give this”, not as zero. These are always null on this call:

  • titleThe title.
  • metrics.sharesShares.
  • is_pinnedWhether the author pinned it.

Every item also has platform, id, ref, approx and type; the response around the items is the same on every call. Response format

What to expect.

One call returns a page of up to 20 items. When page.has_more is true, send page.cursor back as cursor for the next page; each page costs 4 credits and a cursor works for 30 minutes.
A call that runs and finds nothing is a successful call: status is "empty", items is empty, and it costs 4 credits.
On this call X cannot tell a post that does not exist from one with no data: both come back as empty, and both are charged.

1 call per second per key, 5 after a purchase; going over is not charged. Rate limits

A failed call costs 0 credits and is never retried on its own. Error codes

Once connected over MCP, these questions use it.

  1. Get a page of the posts that mention an X user, newest first: NASA.
    call {"op":"x.mentions","username":"NASA"}
    4 credits
  2. Find X accounts about "Smithsonian", then for the first 3: get a page of the posts that mention an X user, newest first.
    search {"platform":"x","query":"Smithsonian","type":"user"}call {"op":"x.mentions","username":"<username>"} × 3
    17 credits

Questions.
Short answers.

Everything on X
Do I need a X account or X's own API access?
No. You only need a SocialToAI key. The call returns content and account information publicly visible on X; you never sign in to X or apply for anything there.

Your AI is one URL away
from all of social media.

Start for freeDocs

100 credits on sign-up, no card needed