On the computer
A browser extension
Chrome, Edge, Brave
Press Check on a post, an article or a sentence. Works on Facebook, X, Instagram, YouTube, TikTok and news sites.
Shuuleg · Шүүлэг
Check a post before you trust it.
Scam & misinformation filter
Press → to begin
A scam looks like any other post.
Free money, a move to Telegram, a short link. In a busy feed, the warning signs are easy to miss.
- 1Promises free money
- 2Moves the talk to Telegram
- 3A short link hides the address
ТТусламж Мэдээлэл 20262 цаг ·
🎁 Иргэн бүрт 500,000₮ тусламж1 олгож байна! Өнөөдөр л хүчинтэй. Асуух зүйл байвал Telegram-аар холбогдоорой2.
bit.lybit.ly/tuslamj-500k3
Two ways to check.
Б@Shuuleg is this real?
High risk · 86/100Likely a scam: it promises free money and moves the talk to Telegram.
On the phone
@Shuuleg on Facebook
No install
Mention @Shuuleg under a public post or in a comment. The Shuuleg page replies with the verdict and its reason.
The extension at work.
Point at a post, press Check, read why.
What it catches.
Scams
Fake giveaways, moves to Telegram, short links, look-alike domains. 18 scam, 6 bot and 6 account-risk rules run on every check.
Misinformation
Unsourced claims, made-up quotes or numbers, sensational framing, missing context, propaganda.
Health claims
45 health rules. The score shows risk signs and checking priority; medical accuracy always reads Unverified.
Fact-checks
A verdict, a confidence and its sources.
- True
- Mostly true
- Misleading
- False
- Unverified
Text in pictures
It reads the words inside images: Claude reads the first 4 pictures of a post.
Readers' reactions
Many Haha, many Angry, reactions with no comments. Context only, never part of the score.
On Facebook
On the phone, mention @Shuuleg.
Mention @Shuuleg under a public post or in a comment, and the Shuuleg page replies with the verdict and its reason: a scam, false information, a health claim.
- Scam
- False information
- Health claim
For people on phones, where the extension can't run.
How it works.
In the browser
The page
a post, an article, a sentence
Extension
reads what you chose
Local helper
rules and scoring
Claude
Haiku 5.5 · Sonnet 5.5 · Opus 5.5
Team database
Supabase Postgres
Dashboard
the team's view
The verdict streams back over a WebSocket, score first.
On Facebook
A mention
@Shuuleg
A reply
Private, and it shows its reasons.
- Nothing is sent until you press Check.
- The exact words are marked on the page, only where they really are.
- Comments are saved with the post, never sent to Claude.
- Claude runs with no tools on page checks.
- Every cited source is checked against the real search results.
- A guide for verifying, not a verdict.
Answers in seconds.
Measured with Claude Haiku 5.5. Results stream, so the score shows first.
- Scam post on Xabout 4 s
- Facebook post with an imageabout 7 s
- News articleabout 9 s
- Fact-check10–16 s
- A post checked beforeinstant
0 s4 s8 s12 s16 s
Cost per check
A page check
$0.0005–0.003
A fact-check
$0.01–0.03
On Haiku, in testing.
Tested end to end.
122
automated helper tests
160
end-to-end browser checks
All passing.
They run on look-alike pages modelled on Facebook, X, Instagram, YouTube and TikTok, not on the live sites. Accuracy hasn't been measured yet: there is no labelled test set.
One dashboard for the team.
- Every check in one place, as people saw it.
- Search every post by any word.
- Filter by risk and see the risk mix.
- Confirm a scam once; its copies get flagged.
Shuuleg
- Overview
- Feed
- Checks
- System
Search posts
AllHigh riskSuspiciousLow risk
Risk mix
High riskSuspiciousLow riskUnrated
- High risk
- Suspicious
- Low risk
Plans.
Placeholder prices for the demo. Nothing is charged.
Free
For anyone on Facebook.
0₮/ month
Free forever
- 20 checks a day
- Every red flag quoted from the post
- Money, phone numbers, short links, Telegram
- Facebook posts and news sites
Journalist
For reporters and fact-checkers.
19,900₮/ month
15,900₮ a month, billed yearly
- Unlimited checks
- Fact-checks with sources
- Health claims
- Text inside pictures
- History and CSV export
Business
For newsrooms, banks and brands.
99,000₮/ month
79,000₮ a month, billed yearly
- Everything in Journalist, 5 seats
- The team dashboard
- Confirm a scam once, flag its copies
- Look-alike domain checks
- Data export
What comes next.
Planned- 1Validate the health weights on real posts, with doctors and native speakers.
- 2Test on the live sites, not only look-alike pages.
- 3Firefox and Safari.
- 4Grow @Shuuleg replies on Facebook.
- 5A verified-brands list for look-alike domain checks.
Thank you.
Check a post before you trust it.
Try Shuuleg: shuuleg.catbyte.mn