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NVD CVE Lookup (x402-endpoints)
x402
NVD CVE Lookup (x402-endpoints) is a paid API for AI agents from x402-endpoints.onrender.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-12).
Looks up security vulnerabilities by exact CVE ID or keyword/product name against the official NIST National Vulnerability Database, returning severity, weaknesses, and references.
Price / call$0.01
Success—
StatusUnknown
How this service works
Security vulnerability lookup (CVE) against the official NVD (NIST) database — by exact CVE id or by keyword/product. Returns description, CVSS severity, CWE weaknesses and references. Worldwide.
Output
Returns structured vulnerability data from NVD including: the CVE description, CVSS severity score and vector, associated CWE weakness identifiers, and a list of official references. For keyword searches, returns up to the requested number of matching CVE records.
Example use cases
Example prompt
“Can you look up CVE-2021-44228 in the NVD database and tell me the CVSS severity score, what CWE weaknesses it has, and any official references?”
Technical details
Endpoint
GEThttps://x402-endpoints.onrender.com/cve/lookup?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need authoritative, official vulnerability data from NIST NVD — the gold standard for CVE information. Prefer this over third-party vuln databases when you need CVSS scores, CWE classifications, and canonical references. Best for security audits, patch prioritization, compliance checks, or enriching security alerts with official severity data.
Side effects
- CVE ID not found in NVD — returns empty or 404-equivalent response
- Invalid CVE ID format — may return error or no results
- Keyword too broad returning no useful results — try more specific term
- NVD upstream API unavailable — service may time out
- Limit parameter out of range (must be 1-20) — validation error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"cves": [
{
"id": "CVE-2021-44228",
"cvss": {
"vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H",
"version": "3.1",
"base_score": 10,
"base_severity": "CRITICAL"
},
"status": "Analyzed",
"published": "2021-12-10T10:15:09.143",
"references": [
"https://logging.apache.org/log4j/2.x/security.html"
],
"weaknesses": [
"CWE-502",
"CWE-917"
],
"description": "Apache Log4j2 JNDI features do not protect against attacker controlled LDAP and other JNDI related endpoints...",
"last_modified": "2026-06-17T04:12:05.460"
}
],
"count": 1,
"query": {
"cve_id": "CVE-2021-44228",
"keyword": null
},
"cached": false,
"source": "NVD — NIST National Vulnerability Database v2.0 (services.nvd.nist.gov)",
"timestamp": "2026-06-24T15:20:00Z",
"total_results": 1
}
}Tags
x402
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