# OSF Cyber Threats Search — CVE & CISA KEV Lookup

> OSF Cyber Threats Search — CVE & CISA KEV Lookup is a paid API for AI agents from api.osf-master-server.com, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-13).

Search live cybersecurity threat intelligence (CVEs, CISA KEV, vulnerability data) by keyword, vendor, product, or CVE ID, returning matched records with severity scores

## Facts

- Endpoint: GET https://api.osf-master-server.com/x402/cyber/threats/%7Bquery%7D
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/osf-cyber-threats-search-cve-cisa-kev-lookup-23cd79b2
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_2V75b1d7UoqsThevrnUK_

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 osf-cyber-threats-search-cve-cisa-kev-lookup-23cd79b2
```

Example prompt: Search for known cybersecurity vulnerabilities and CISA KEV entries for Apache Log4j and tell me the severity scores for any matches you find.

## When to prefer this

Choose this endpoint when an agent needs to look up structured, provenance-stamped cybersecurity vulnerability data from authoritative government sources (NVD, CISA KEV) by keyword, CVE ID, vendor, or product name. Prefer this over general web search when you need machine-readable severity scores and verifiable source attribution. Best suited for automated threat intelligence workflows, patch management pipelines, and vendor risk assessments where data provenance matters.

## Known failure modes

- No matches found for obscure or misspelled queries — returns empty match list
- Invalid or malformed CVE ID format may return zero results
- Query too generic (e.g. single common word) may return noisy or irrelevant matches
- Payment failure via x402 micropayment will block record retrieval
- Rate limiting if too many requests are made in quick succession

## How this service works

OSF is a live marketplace of provenance stamped public domain government and scientific data, built for autonomous agents that pay per record over x402 micropayments on Base. A paid MCP server in the official MCP Registry, discoverable on the Coinbase CDP Bazaar.

## Output

Returns a JSON object with a result status (e.g. MATCHES_FOUND), a list of matched vulnerability records each containing CVE ID, title, source database (e.g. CISA_KEV or NVD), an internal record ID, and a severity or CVSS score, plus a total match count.

## 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"
    },
    "pathParams": {
     "type": "object",
     "required": [
      "query"
     ],
     "properties": {
      "query": {
       "type": "string",
       "description": "Keyword(s): vendor, product, CVE id, or technique. E.g. 'Microsoft Exchange' or 'SQL injection'."
      }
     }
    },
    "queryParams": {
     "type": "object",
     "properties": {}
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "result": "MATCHES_FOUND",
  "matches": [
   {
    "id": "CVE-2021-44228",
    "title": "Apache Log4j2 RCE",
    "source": "CISA_KEV",
    "record_id": 12345,
    "severity_or_score": 10
   }
  ],
  "match_count": 2
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/osf-cyber-threats-search-cve-cisa-kev-lookup-23cd79b2/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.osf-master-server.com](https://www.zero.xyz/host/api.osf-master-server.com/llms.txt)