Dub
Link management platform that uses Jev to flag malicious dub.sh URLs trained on historical abuse domains.
by @steventey
Overview
Dub (dub.co) is a link management and analytics platform. Steven Tey's weekend project clip describes building a malicious URL scanner for dub.sh using Jev, trained on ten thousand plus malicious domains Dub already caught historically.
Problem: Free short links attract lead gen traffic and abusive actors who paste phishing URLs through the same dub.sh funnel.
Built for: Teams running Dub link campaigns who need scalable abuse detection without paying chat-model prices per click.
First indexed on Jev Directory: 2026-09-20
Creator and team
- Name
- Steven Tey
- Organization
- Dub
- Handle
- @steventey
“Feed malicious domains into Jev, train it to flag malicious-looking URLs, and keep scanning cost negligible thanks to token-efficient Jev.”
How Jev is used
- Role in the product flow
- Abuse detection gate on new short links
- Primitives
- NoulScore
- State in
- Candidate URL text plus historical malicious domain patterns described in the launch thread (ten thousand plus known bad domains).
- Decision out
- Malicious or suspicious URL flag before the link spreads on dub.sh, per the attributed build clip.
- Collect historical malicious domains from Dub abuse operations
- Train or calibrate Jev scoring on malicious-looking URL features
- Run cheap Jev checks on incoming dub.sh links at creation time
Instead of calling a general LLM on every new short link, Dub's clip uses Jev as a fast structured classifier over URL text informed by prior abuse data. Token efficiency keeps marginal scan cost near zero at link volume. This profile does not claim undisclosed Dub internal APIs beyond Steven Tey's public post.
Sourced performance claims
- Built and shipped the scanner in about two hours after wrestling with abuse since day one.Source: Steven Tey X thread on malicious link scanner
Features and stack
Features
- Branded links and analytics at dub.co
- dub.sh free tier lead gen with abuse risk
- Jev-backed malicious URL scanner from public demo
Stack
- Dub platform
- dub.sh short links
- TypeSafe System One
Demo
Showcase clip with the same lightbox player as the homepage. Click to play.
Malicious dub.sh URL scanner
Ten thousand shady domains fed into Jev, dub.sh stops looking like a free pass for phishers. Steven solved a day-one abuse problem in one weekend sprint.
Links
FAQ
- Is the scanner live for all dub.sh links?
- This directory documents the pattern from Steven Tey's public clip. Confirm rollout scope on dub.co or Dub changelogs.
Related learn guides
Original Jev guidance that pairs with this product pattern.
- Jev vs LLM classification
When to gate with System One probabilities instead of asking a chat model to label things.
- Jev use cases
The patterns builders actually search for: moderation, routing, triage, RAG verify, and agent gates.
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