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Dependency Gate – Package Security & License Policy Check
x402
Dependency Gate – Package Security & License Policy Check is a paid API for AI agents from x402-canary.nicolas-x402-16f380a7.workers.dev, paid per call via x402, $0.015/call, status unknown (last checked 2026-09-14).
Validates npm and PyPI packages against vulnerability databases and license policies, returning an ALLOW/DENY decision for each package and the set as a whole.
Price / call$0.015
Success—
StatusUnknown
How this service works
Free need-to-tool routing plus pay-per-call npm docs and TypeScript API signatures, npm breaking-change diffs, JavaScript-rendered browser snapshots and deterministic coding-agent checks via AgentCash/x402.
Output
Returns a top-level ALLOW or DENY decision, an install_allowed boolean, and per-package details including resolved version, vulnerability count, and individual ALLOW/DENY decisions, sourced from deps.dev and OSV.dev.
Example use cases
CI gate before npm install
“I'm about to install express@4.18.2 and lodash@4.17.21 from npm — can you run them through the dependency gate and block the install if either has known vulnerabilities?”
License compliance for enterprise repo
“Check react@18.2.0 and next@14.0.0 on npm against our policy: deny any GPL, LGPL, or AGPL licenses and block if there are any direct vulnerabilities — tell me if we're clear to install.”
PyPI package audit before deployment
“Before we deploy, validate that requests@2.31.0 and cryptography@41.0.4 from PyPI are safe — flag anything deprecated and block if any direct security vulnerabilities are found.”
Technical details
Endpoint
POSThttps://x402-canary.nicolas-x402-16f380a7.workers.dev/v1/agent/dependency-gateWhen to prefer
Use this endpoint when a coding agent needs a deterministic, policy-enforceable ALLOW/DENY decision on npm or PyPI packages backed by live vulnerability (OSV.dev) and metadata (deps.dev) data. Prefer it over manual npm audit or Snyk when you need a structured JSON gate result within an automated agent workflow, especially when license policy enforcement is also required.
Side effects
- Package not found in registry – returns error or DENY for that package
- Version string not resolvable – unrecognized version may cause lookup failure
- Exceeds maxItems limit (5 packages per call) – request rejected with validation error
- Unsupported ecosystem value – must be 'npm' or 'pypi'
- Upstream deps.dev or OSV.dev unavailable – may return degraded or error response
- Payment not included or insufficient – x402 payment required at $0.015 USDC per call
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| policy | object | |
| packages | array |
Output
Schema · Response
{
"type": "json",
"example": {
"data": {
"decision": "ALLOW",
"packages": [
{
"name": "hono",
"decision": "ALLOW",
"ecosystem": "npm",
"resolved_version": "4.13.2",
"vulnerability_count": 0
}
],
"provenance": [
"deps.dev v3",
"OSV.dev v1"
],
"package_count": 1,
"install_allowed": true
},
"meta": {
"engine": "dependency-gate"
}
}
}Tags
x402
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