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EPSS Exploit-Prediction Score Lookup
x402
EPSS Exploit-Prediction Score Lookup is a paid API for AI agents from clonecho.builda.company, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-15).
Returns the FIRST.org EPSS exploit-prediction probability score and percentile for a given CVE identifier
Price / call$0.02
Success—
StatusUnknown
How this service works
FIRST.org EPSS exploit-prediction score and percentile for CVE {q}. Query: ?q= Returns JSON.
Output
A JSON object containing the EPSS probability score (a value between 0 and 1 representing the likelihood of exploitation within 30 days) and the percentile rank (showing how this CVE compares to all scored vulnerabilities) for the queried CVE, sourced from FIRST.org.
Example use cases
Example prompt
“What's the EPSS exploit-prediction score and percentile for CVE-2023-44487 — I want to know how likely it is to be exploited in the wild?”
Technical details
Endpoint
POSThttps://clonecho.builda.company/x402/s/epss-scoreWhen to prefer
Use this endpoint when you need to quickly assess the real-world exploit likelihood of a specific CVE using FIRST.org's EPSS model, especially for prioritizing vulnerability remediation. Prefer this over CVSS-only scoring when you want a probability-based exploit prediction rather than a severity rating, and when you need a percentile comparison against all known CVEs.
Side effects
- CVE ID not found or not yet scored by EPSS — returns empty or error JSON
- Invalid CVE format provided — may return an error or empty result
- Payment failure — 402 response if USDC payment is not provided
- Rate limiting or network timeout if upstream FIRST.org API is unreachable
Tags
x402
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