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Typosquat & Homoglyph Domain Check
x402
Typosquat & Homoglyph Domain Check is a paid API for AI agents from payai.agentstools.dev, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-14).
Performs offline pure-compute analysis of a hostname to detect typosquatting, homoglyph spoofing, brand-in-subdomain lures, punycode/IDN abuse, and throwaway TLD usage — 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 containing: is_typosquat (boolean verdict), the nearest matching brand name from the curated list, the edit distance between the input domain and that brand, and a list of reasons explaining the detection (e.g. homoglyph characters found, brand-in-subdomain pattern, punycode/IDN abuse, abused free-hosting suffix, throwaway TLD). No network calls are made — result is computed purely offline.
Example use cases
Example prompt
“Before I click that payment link, can you check if 'paypa1-secure.xyz' is a typosquat or homoglyph spoof of a known brand — I want to know the nearest brand it resembles and why it looks suspicious?”
Technical details
Endpoint
GEThttps://payai.agentstools.dev/domain/typosquatWhen to prefer
Use this endpoint when you need a fast, free-of-network-call, purely computational check on a hostname before transacting with it or clicking a link — especially when you suspect visual spoofing, brand impersonation, or throwaway TLD abuse. Prefer this over full phishing verdict endpoints when you only need the typosquat/homoglyph dimension and want instant, cheap results without any DNS or reputation network lookups.
Side effects
- Missing 'domain', 'host', or 'url' query parameter — returns 400 bad request
- Domain string is malformed or unparseable — may return error or low-confidence result
- Brand not in curated list — legitimate lookalike domains may be missed (false negative)
- Very new or obscure brands not in the curated list will not be detected
- Punycode domains must be passed as-is for IDN detection to work correctly
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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