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Grey Ridge Signals — Tech Risk & Vulnerability Enrichment API
x402
Grey Ridge Signals — Tech Risk & Vulnerability Enrichment API is a paid API for AI agents from x402-data-api.sigrunner.workers.dev, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-16).
Returns a vulnerability risk summary for a website's detected tech stack, including CVEs, CVSS/EPSS scores, and a pass/review/fail verdict, paid per-call via x402 on Base.
Price / call$0.05
Success—
StatusUnknown
How this service works
Agent-native pay-per-call data on Base (USDC via x402). No API keys, no signup. Discovery: /.well-known/x402
Output
A JSON object with: a verdict (pass/review/fail), detected tech stack components (e.g. nginx, PHP), a plain-English risk summary, and an array of vulnerabilities each containing CVE ID, whether it's in the CISA KEV catalog, CVSS score, EPSS score, plain-text description, and exploit availability flag.
Example use cases
Vendor security due diligence check
“Before we onboard this SaaS vendor, can you pull a tech risk report on their website and tell me if there are any critical CVEs in their stack I should worry about?”
Acquisition target cyber risk screening
“We're evaluating acquiring this company — can you check their public-facing site for known vulnerabilities, give me the CVE details and CVSS scores, and let me know if they get a pass or review verdict?”
Continuous third-party risk monitoring
“Run a tech risk scan on our top supplier's website and flag any new high-severity CVEs or exploits that weren't there last week.”
Technical details
Endpoint
GEThttps://x402-data-api.sigrunner.workers.dev/enrich/tech-riskWhen to prefer
Choose this endpoint when you need per-call, keyless vulnerability enrichment for a specific website's tech stack without committing to a subscription. Ideal for one-off due diligence, ad-hoc security checks, or agentic workflows that need to assess third-party risk programmatically. Prefer over full DAST scanners when you only need passive CVE/CVSS/EPSS intelligence rather than active probing.
Side effects
- Missing or malformed 'properties' input returns an error or empty stack
- Domain not resolvable or no tech stack detected returns empty vulnerabilities array
- Payment failure via x402 returns HTTP 402 before any data is served
- CVE database may not include very recent CVEs disclosed within the last few days
- EPSS scores may lag NVD publish date by 1-2 days
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| properties | string |
Output
Schema · Response
{
"type": "json",
"example": {
"verdict": "review",
"tech_stack": [
"nginx",
"PHP"
],
"risk_summary": "nginx, PHP — 2 high-severity CVEs. Prioritize patching.",
"vulnerabilities": [
{
"id": "CVE-2024-24989",
"in_kev": false,
"cvss_score": 7.5,
"epss_score": 0.0234,
"description": "Description text",
"exploit_available": false
}
]
}
}Tags
x402
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