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Typosquat & Homoglyph Domain Check
x402
Typosquat & Homoglyph Domain Check is a paid API for AI agents from api.agentstools.dev, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-14).
Performs a pure-compute check on a hostname for typosquatting, homoglyphs, brand impersonation, punycode/IDN abuse, and throwaway TLDs — returning a verdict, nearest brand, edit distance, and reasons.
Price / call$0.005
Success—
StatusUnknown
How this service works
Pure-compute typosquat and homoglyph check on a hostname: edit-distance to a curated brand list, look-alike character normalization, brand-in-subdomain lures, punycode/IDN, abused free-hosting suffixes and throwaway TLDs. Returns is_typosquat plus the nearest brand, edit distance and reasons. No network — instant, cheap.
Output
Returns a JSON object with: is_typosquat (boolean verdict), the nearest matching brand name from a curated list, edit distance from that brand, and a list of human-readable reasons explaining the detection (e.g. homoglyph substitution, punycode encoding, throwaway TLD, brand-in-subdomain lure).
Example use cases
Phishing link safety check
“I just got an email with a link to 'arnazon-login.net' — can you check if that domain is trying to impersonate a real brand and tell me why it looks sketchy?”
Bulk domain screening pipeline
“We're ingesting thousands of newly registered domains every hour — can you flag any that appear to be typosquats or lookalikes of well-known brands, and explain what makes each one suspicious?”
Homoglyph attack detection
“Someone submitted 'microsоft.com' (with a Cyrillic 'о') to our form — can you analyze that hostname for homoglyph tricks or punycode abuse and tell me if it's impersonating Microsoft?”
Technical details
Endpoint
GEThttps://api.agentstools.dev/domain/typosquatWhen to prefer
Use this endpoint when you need instant, zero-latency, no-network typosquat detection — ideal for high-volume screening pipelines, real-time link safety checks, or agent workflows that must avoid external DNS/WHOIS lookups. Prefer this over full WHOIS or DNS-based checks when speed and cost matter and pure textual analysis is sufficient.
Side effects
- Missing domain/host/url query parameter — returns 400 or error response
- Domain string is malformed or unparseable — may return error or low-confidence result
- Brand not in curated list — may return is_typosquat=false even for real impersonation of unknown brands
- Very long or unusual hostnames may produce unexpected edit-distance results
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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