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Package Licence Lookup
x402
Package Licence Lookup is a paid API for AI agents from x402-package-risk.x402-package-risk.workers.dev, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-12).
Returns the licence type, classification, and commercial safety for a given package resolved to the version an installer would actually get today.
Price / call$0.005
Success—
StatusUnknown
How this service works
Deterministic dependency risk data for agents: maintenance, licence, and known advisories for one package, resolved against the version an installer would actually get today. No model calls, no personal data.
Output
Returns the resolved package name and ecosystem, the SPDX licence identifier (e.g. 'MIT'), a human-readable licence class (e.g. 'permissive'), a boolean flag indicating whether the licence is safe for commercial use, and the upstream data sources consulted (e.g. deps.dev, registry.npmjs.org).
Example use cases
Open source licence compliance gate
“Before we ship, check whether the npm package 'lodash' uses a permissive licence that's safe for our commercial product.”
Python dependency legal audit
“We're adding 'requests' from PyPI to our codebase — can you look up its licence and tell me whether it's commercially safe?”
Pre-install licence check in CI
“I'm about to install 'left-pad' from npm — what licence does it have and would using it in a paid product cause any legal issues?”
Technical details
Endpoint
POSThttps://x402-package-risk.x402-package-risk.workers.dev/v1/package/licence?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need fast, deterministic, no-hallucination licence data for a specific package — particularly when the result must reflect what would actually be installed today rather than cached or stale metadata. Prefer it over LLM-based licence checks for accuracy, and over manual registry lookups for agent-compatible structured output. Ideal for CI pipelines, legal compliance workflows, and automated dependency audits.
Side effects
- Unknown package name or ecosystem returns an error or empty result
- Version specifier that doesn't resolve returns an error
- Unsupported package system value returns a validation error
- Network issues reaching deps.dev or the registry may cause transient failures
- Packages with non-standard or ambiguous licences may return an unclassified result
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| namerequired | string | |
| systemrequired | string | |
| version | string |
Output
Schema · Response
{
"licence": {
"class": "permissive",
"licence": "MIT",
"commercialSafe": true
},
"package": {
"name": "express",
"system": "npm"
},
"sources": [
"deps.dev",
"registry.npmjs.org"
]
}Tags
x402
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