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pkgpulse Typosquat Check
x402
pkgpulse Typosquat Check is a paid API for AI agents from pkgpulse.letom1176.workers.dev, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-11).
Checks an npm package name for typosquatting risk by comparing it against popular packages using edit-distance analysis and npm claim status
Price / call$0.003
Success—
StatusUnknown
How this service works
Dependency intelligence for AI coding agents, paid per-call via x402 (USDC on Base): npm package health scores with a disclosed rubric, typosquat checks, dependency audits. Free index at /, free sample at /api/sample.
Output
Returns a JSON object with the queried package name, a boolean 'suspicious' flag, a 'risk_level' string (e.g. 'medium', 'high', 'low'), a list of 'reasons' explaining the suspicion, and a 'lookalike_matches' array containing popular package names, their edit distances, and their weekly download counts.
Example use cases
AI coding agent dependency guard
“Before installing 'requesst' as a dependency in my project, check whether it's a typosquat of some popular npm package and tell me the risk level.”
Security audit of hallucinated package
“My LLM suggested I install 'axois' via npm — can you run a typosquat check to see if it resembles 'axios' and whether it's unclaimed or potentially malicious?”
CI pipeline supply chain check
“As part of our CI process, check whether the npm package 'mongoos' is flagged as a typosquat — I need the risk level and which popular packages it looks like.”
Technical details
Endpoint
GEThttps://pkgpulse.letom1176.workers.dev/api/typosquat-check?utm_source=zero.xyzWhen to prefer
Use this endpoint when an AI coding agent needs to validate an npm package name before installation, especially when the package was suggested by an LLM (which may hallucinate plausible-sounding but nonexistent package names). It is the right choice for detecting supply chain attacks, catching typosquatted dependencies in CI/CD pipelines, or auditing package names in AI-generated code. Prefer it over generic vulnerability databases when the specific concern is name-similarity spoofing rather than known CVEs.
Side effects
- Missing 'name' query parameter returns an error
- Package name not found on npm may still be flagged as suspicious if it resembles a popular name
- Very short or generic names may produce false positives
- Payment failure via x402 protocol returns 402 with payment instructions
- Rate limiting or worker quota exceeded returns 429 or 503
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"name": "expresss",
"reasons": [
"resembles express (edit distance 1)",
"name is unclaimed on npm — a hallucinated install command using it could be squatted at any time"
],
"risk_level": "medium",
"suspicious": true,
"lookalike_matches": [
{
"popular_name": "express",
"edit_distance": 1,
"popular_weekly_downloads": 30000000
}
]
}
}Tags
x402
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