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license-check
x402
license-check is a paid API for AI agents from payai.agentstools.dev, paid per call via x402, $0.03/call, status unknown (last checked 2026-09-15).
Returns a license-compliance verdict (safe, attribution-required, copyleft-risk, or incompatible) for a single package and its entire transitive dependency tree, resolving deps.dev metadata and SPDX licenses.
Price / call$0.03
Success—
StatusUnknown
How this service works
License-compliance verdict for one package and its whole transitive dependency tree. Resolves the deps.dev graph plus the declared SPDX license of every node, finds copyleft contamination points, and returns a target-and-distribution-aware verdict of safe, attribution-required, copyleft-risk or incompatible. Automated indicators, not legal advice.
Output
A structured compliance verdict for the package and its transitive dependency tree, including: an overall verdict (safe, attribution-required, copyleft-risk, or incompatible), identified copyleft contamination points with package names and SPDX license identifiers, and per-node license data from the resolved deps.dev graph. Distribution mode and target license are factored into the verdict. Results are automated indicators, not legal advice.
Example use cases
Pre-ship SaaS compliance check
“Before we launch, can you check whether the pypi package 'celery' version 5.3.1 is license-compatible with our proprietary SaaS product? Flag any copyleft contamination in its dependency tree.”
Open-source project attribution audit
“I'm publishing an MIT-licensed library that depends on the npm package 'axios'. Check its full dependency tree and tell me if I need to add any attribution notices or if there are incompatible licenses lurking.”
Binary distribution risk scan
“We're shipping a compiled binary that bundles the cargo crate 'tokio'. Our project is Apache-2.0 — run a license check and tell me if distributing it as a binary creates any copyleft or incompatibility issues.”
Technical details
Endpoint
GEThttps://payai.agentstools.dev/license/checkWhen to prefer
Choose this endpoint when you need a quick, automated license-risk verdict for a single package with full transitive dependency analysis, especially when you need distribution-mode awareness (saas/binary/internal) and target-license compatibility checking. Prefer it over generic package metadata APIs when copyleft contamination detection across the full dep graph matters. Use the sibling batch-manifest endpoint instead when checking an entire lockfile or requirements.txt at once.
Side effects
- Package not found in the specified ecosystem — returns error if name/version doesn't exist in deps.dev
- Unsupported ecosystem enum value — request rejected with validation error
- Version resolution failure if omitted version cannot be resolved to a latest stable release
- Invalid or unrecognized SPDX license string for target_license — may return unclear verdict
- Dependency graph too large or circular — potential timeout or incomplete traversal
- Payment failure (x402) — call blocked if USDC payment not completed
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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