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Dependency Risk Preflight
x402
Dependency Risk Preflight is a paid API for AI agents from dependency-risk-preflight.dependency-risk-preflight.workers.dev, paid per call via x402, $0.05/call, status unknown (last checked 2026-10-10).
Checks a single npm or PyPI package+version for vulnerabilities, CISA KEV status, deprecation, license, and yanked releases, returning a PASS/WARN/BLOCK/UNKNOWN verdict before install or upgrade.
Price / call$0.05
Success—
StatusUnknown
How this service works
Deterministic npm/PyPI dependency vulnerability preflight for a single package+version -- a package security check before install/update. Checks OSV.dev vulnerabilities, the CISA Known Exploited Vulnerabilities catalog, and registry deprecation/license/yanked-release metadata in one call, returning a PASS/WARN/BLOCK/UNKNOWN verdict with reason codes. Built for autonomous coding agents and CI/package-update agents to call before installing or upgrading a dependency.
Output
Returns a JSON object with a top-level verdict (PASS, WARN, BLOCK, or UNKNOWN), an array of reason_codes explaining the verdict, a list of vulnerabilities with IDs, aliases, severity, fixed versions, and known_exploited flag, a recommended_version pointing to the lowest version resolving all findings, registry metadata (deprecated, yanked, deprecation_message), license info with SPDX status, and a checked_at timestamp with source availability for OSV, CISA KEV, and the registry.
Example use cases
CI gate before dependency install
“We're about to install numpy version 1.24.0 from PyPI in our pipeline — can you run a preflight check for known CVEs, CISA exploited vulnerabilities, and any yanked-release flags, and block the build if the verdict isn't PASS?”
Autonomous agent upgrade safety check
“My coding agent wants to bump axios from 0.21.1 to 0.21.2 in our npm project — check whether 0.21.2 is safe: any vulnerabilities, exploits in the wild, or deprecation issues before it commits the change?”
License and vulnerability audit before PR merge
“Before we merge this PR that adds requests 2.27.1 as a PyPI dependency, do a preflight check on it — I need to know the license, whether it's been yanked, and if there are any MODERATE or higher severity vulnerabilities with a recommended safe version.”
Technical details
Endpoint
POSThttps://dependency-risk-preflight.dependency-risk-preflight.workers.dev/v1/dependency/preflight?utm_source=zero.xyzWhen to prefer
Use this endpoint when an autonomous coding agent, CI pipeline, or package-update bot needs a deterministic, single-call safety gate before installing or upgrading any npm or PyPI dependency. It is purpose-built for agentic workflows, combining OSV vulnerabilities, CISA KEV known-exploit status, and registry metadata (deprecation, license, yanked releases) into one structured verdict — eliminating the need to stitch together multiple security APIs yourself. Prefer it over generic vulnerability scanners when you need a machine-readable PASS/WARN/BLOCK/UNKNOWN verdict with reason codes that an agent can act on without further parsing.
Side effects
- Package or version not found in registry — verdict returns UNKNOWN with appropriate reason code
- OSV or CISA KEV source unavailable — sources array shows checked:false, verdict may be UNKNOWN
- Invalid ecosystem value — request rejected with validation error
- Malformed or missing package/version fields — returns error response
- Network timeout to upstream data sources — partial results with unavailable source flags
Input
Schema · Request body
{
"input": {
"type": "object",
"required": [
"ecosystem",
"package",
"version"
],
"properties": {
"package": {
"type": "string",
"maxLength": 214,
"minLength": 1
},
"version": {
"type": "string",
"maxLength": 100,
"minLength": 1
},
"ecosystem": {
"enum": [
"npm",
"PyPI"
],
"type": "string",
"description": "Case-sensitive."
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"schema_version",
"request",
"verdict",
"reason_codes",
"vulnerabilities",
"checked_at"
],
"properties": {
"verdict": {
"enum": [
"PASS",
"WARN",
"BLOCK",
"UNKNOWN"
],
"type": "string"
},
"reason_codes": {
"type": "array",
"items": {
"type": "string"
}
},
"schema_version": {
"type": "string",
"const": "1"
},
"recommended_version": {
"type": [
"string",
"null"
]
},
"vulnerability_count": {
"type": "integer"
}
}
}
}Output
Schema · Response
{
"example": {
"license": {
"raw": "MIT",
"source": "npm-registry",
"status": "known",
"spdx_validated": false
},
"request": {
"package": "lodash",
"version": "4.17.15",
"ecosystem": "npm"
},
"sources": [
{
"name": "OSV",
"status": "available",
"checked": true
},
{
"name": "CISA_KEV",
"status": "available",
"checked": true,
"catalog_version": "2026.08.11"
},
{
"name": "NPM_REGISTRY",
"status": "available",
"checked": true
}
],
"verdict": "WARN",
"registry": {
"exists": true,
"deprecated": false,
"project_status": null,
"release_yanked": null,
"deprecation_message": null
},
"checked_at": "2026-08-13T00:00:00.000Z",
"reason_codes": [
"MODERATE_VULNERABILITY"
],
"schema_version": "1",
"vulnerabilities": [
{
"id": "GHSA-example-0000",
"aliases": [
"CVE-2020-28500"
],
"severity": "MODERATE",
"fixed_versions": [
"4.17.21"
],
"known_exploited": false
}
],
"recommended_version": "4.17.21",
"vulnerability_count": 1,
"recommended_version_basis": "lowest version resolving all known findings",
"vulnerabilities_truncated": false
}
}Tags
x402
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