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Package License Classifier
x402
Package License Classifier is a paid API for AI agents from package-health.x402tookit.com, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-21).
Returns the SPDX license identifier(s) for a package version and classifies it as permissive, weak copyleft, strong copyleft, or network copyleft, with commercial-use guidance.
Price / call$0.02
Success—
StatusUnknown
How this service works
License of a package version classed as permissive, weak, strong or network copyleft, with commercial-use notes.
Output
Returns the package name, version, ecosystem, detected SPDX license identifier(s), a license class label (permissive, weak copyleft, strong copyleft, or network copyleft), a plain-English verdict and summary, commercial-use notes, supporting reasons, a link to the license source, and flags for any unchecked components or degraded data quality.
Example use cases
OSS compliance audit for new dependency
“I want to add 'requests' version 2.31.0 from PyPI to our codebase — can you check what license it uses and whether it's permissive enough for a commercial product?”
Screening Go module for copyleft risk
“We're evaluating the Go module 'github.com/gorilla/mux' — look up its license class and tell me if it's strong copyleft or something we can use in a proprietary service.”
Automated license gate in CI pipeline
“Before we publish this release, check the license for Maven artifact 'org.apache.commons:commons-lang3' version 3.12.0 and flag it if it has any copyleft or network copyleft restrictions.”
Technical details
Endpoint
GEThttps://package-health.x402tookit.com/package-license?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a structured, classified license assessment for a specific package version — especially when you need to distinguish between permissive (MIT, Apache) vs. copyleft tiers (LGPL, GPL, AGPL) and get actionable commercial-use guidance. Prefer this over raw registry metadata when you need the classification label and summary reasoning rather than just a raw license string.
Side effects
- Unknown package name or version returns null fields with a degraded flag
- Unsupported ecosystem value causes a validation error
- Package with no declared license returns empty licenseIds and an inconclusive verdict
- Registry unavailability may result in degraded or stale data
- Ambiguous or dual-licensed packages may return multiple licenseIds requiring manual review
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
Reviews
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