# CVE Vulnerability Intelligence Lookup

> CVE Vulnerability Intelligence Lookup is a paid API for AI agents from api.agentstools.dev, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-11).

Returns fused vulnerability intelligence for a single CVE ID, combining CVSS scores, CISA KEV status, EPSS exploitation probability, OSV affected/fixed versions, and a patch-priority score into one JSON response.

## Facts

- Endpoint: GET https://api.agentstools.dev/cve/lookup?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-11
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/cve-vulnerability-intelligence-lookup-599c8b86
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_qa2B9AAY5dAnvSaprFX7u

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-vulnerability-intelligence-lookup-599c8b86
```

Example prompt: Can you pull the full vulnerability intelligence for CVE-2021-44228 — I need its CVSS score, whether it's on the CISA KEV list, the EPSS exploitation probability, and which versions are affected and fixed?

## When to prefer this

Choose this endpoint when you need a single, unified risk profile for a specific CVE that fuses multiple authoritative sources (NVD, CISA KEV, EPSS, OSV) into one response with a pre-computed patch-priority score, rather than querying each source separately and aggregating manually. Ideal for vulnerability triage workflows, security dashboards, or agent-driven patch management pipelines.

## Known failure modes

- Invalid or malformed CVE ID format returns a 4xx error
- CVE ID not found in NVD or source databases returns empty or null result
- One or more upstream sources (e.g. EPSS, OSV) may be unavailable, resulting in partial data
- Rate limiting or payment failure may return 402 or 429 status
- Very new CVEs may have incomplete data across sources

## How this service works

Vulnerability intelligence for a single CVE id. Fuses NVD (CVSS base score and vector, CWE, patch links), CISA KEV known-exploited status, EPSS exploitation probability and OSV.dev affected and fixed versions into one cited JSON with a deterministic patch-priority score. Risk indicators, not advice.

## Output

A JSON object containing: CVSS base score and vector string, CWE identifiers, official patch/advisory links from NVD, a boolean or status indicating if the CVE is in the CISA KEV known-exploited list, an EPSS exploitation probability score, OSV-sourced lists of affected and fixed package versions, and a computed patch-priority score derived from combining these signals.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "cve_id"
     ],
     "properties": {
      "cve_id": {
       "type": "string",
       "description": "CVE identifier, e.g. CVE-2021-44228"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/cve-vulnerability-intelligence-lookup-599c8b86/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.agentstools.dev](https://www.zero.xyz/host/api.agentstools.dev/llms.txt)