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Package Install-Safety Preflight Check
x402
Package Install-Safety Preflight Check is a paid API for AI agents from api.agentstools.dev, paid per call via x402, $0.03/call, status unknown (last checked 2026-10-11).
Runs a pre-install safety check on an npm or PyPI package, returning a verdict (safe/caution/block) based on OSV malware flags, typosquat detection, hallucination corpus matching, and freshness metadata.
Price / call$0.03
Success—
StatusUnknown
How this service works
Install-safety preflight for one dependency BEFORE pip install / npm i. Returns a safe / caution / block verdict fusing existence, OSV malware flags, typosquat distance to a popular package, a known-hallucination corpus, and freshness metadata. Supply-chain indicators, not a guarantee.
Output
A JSON object containing a verdict field (safe, caution, or block), OSV malware flag status, typosquat distance score relative to popular packages, whether the package name appears in a known AI-hallucinated package corpus, freshness/existence metadata, and a note that these are supply-chain indicators rather than guarantees.
Example use cases
Example prompt
“Before I run pip install langchain-openai, can you do a preflight safety check on that PyPI package — tell me if it's safe, a possible typosquat, flagged for malware, or just a hallucinated name?”
Technical details
Endpoint
GEThttps://api.agentstools.dev/pkg/preflight?utm_source=zero.xyzWhen to prefer
Use this endpoint when an AI agent is about to suggest or execute a `pip install` or `npm install` command and needs a fast supply-chain safety gate before proceeding. Ideal for agentic coding workflows where hallucinated package names or typosquatted dependencies are a real risk. Prefer this over a generic vulnerability scanner when you need a single-call preflight that fuses existence, malware, typosquat, and hallucination signals in one verdict.
Side effects
- Unknown or unsupported ecosystem name — ecosystem must be 'npm' or 'pypi'
- Package name missing from query — 400-level error returned
- Registry lookup timeout causing incomplete verdict
- OSV database temporarily unavailable, resulting in partial signal
- Very new package with no metadata may return low-confidence freshness result
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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Zero review prompt (fires after every successful call)
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