# CVE Details Lookup via NIST NVD

> CVE Details Lookup via NIST NVD is a paid API for AI agents from api.strale.io, paid per call via x402, $0.0324/call, status unknown (last checked 2026-10-30).

Look up a single CVE identifier in the NIST National Vulnerability Database to retrieve description, CVSS score/vector, CWE IDs, CISA known-exploited status, affected products, and references.

## Facts

- Endpoint: POST https://api.strale.io/x402/cve-details?utm_source=zero.xyz
- Price: $0.0324/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-30
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/cve-details-lookup-via-nist-nvd-8af22e70
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_kHSk6CK9Z-iohxUfeP5zF

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability cve-details-lookup-via-nist-nvd-8af22e70 -d '<json body>'
```

Example prompt: Can you pull up the full details for CVE-2021-44228 — I need the CVSS score, CWE IDs, whether it's on the CISA known-exploited list, and any references?

## When to prefer this

Use this endpoint when you need structured, authoritative vulnerability data for a single known CVE ID, especially when you need CVSS scores, CWE categories, CISA known-exploited status, and affected product lists in one call. Prefer this over scraping the NVD website or using general web search when you need machine-readable, consistently structured vulnerability intelligence for automation, triage, or reporting workflows.

## Known failure modes

- Invalid or malformed CVE ID format — returns error indicating bad input
- CVE not found in NVD — returns empty or not-found status
- NVD upstream unavailable — returns timeout or service error
- Very recently published CVE not yet indexed — may return no results

## How this service works

Look up one CVE in the NIST National Vulnerability Database: description, CVSS score and vector, CWE ids, CISA known-exploited status, affected products and references.

## Output

Returns a structured object containing: the CVE ID, human-readable description, CVSS score and vector object, array of CWE IDs, boolean indicating CISA known-exploited status, published date, NVD URL for the vulnerability, and an array of reference URLs/advisories.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "cve_id"
 ],
 "properties": {
  "cve_id": {
   "type": "string",
   "description": "CVE identifier, e.g. CVE-2021-44228"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "cvss": {
  "type": "object"
 },
 "cve_id": {
  "type": "string"
 },
 "status": {
  "type": "string"
 },
 "cwe_ids": {
  "type": "array"
 },
 "nvd_url": {
  "type": "string"
 },
 "published": {
  "type": "string"
 },
 "references": {
  "type": "array"
 },
 "description": {
  "type": "string"
 },
 "known_exploited": {
  "type": "boolean"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/cve-details-lookup-via-nist-nvd-8af22e70/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.strale.io](https://www.zero.xyz/host/api.strale.io/llms.txt)