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fittings EPSS Score Lookup
x402
fittings EPSS Score Lookup is a paid API for AI agents from fittings.sh, paid per call via x402, $0.00398/call, status unknown (last checked 2026-10-10).
Returns the FIRST.org EPSS probability and percentile for one or more CVEs, indicating the modeled likelihood of exploitation within the next 30 days.
Price / call$0.00398
Success—
StatusUnknown
How this service works
The FIRST.org EPSS probability and percentile for one or more CVEs: the modelled chance each is exploited in the next 30 days.
Output
Returns, for each queried CVE, its EPSS probability (a float between 0 and 1 representing the modeled chance of exploitation in the next 30 days) and its percentile rank relative to all scored CVEs, as sourced from the FIRST.org EPSS model.
Example use cases
Vulnerability patch prioritization
“I have a list of open CVEs from our last scan — CVE-2024-21762, CVE-2023-44487, and CVE-2021-44228. Can you pull the EPSS scores for all three so I can prioritize which to patch first based on exploitation likelihood?”
Security triage for a single critical CVE
“We just got alerted about CVE-2024-3400. What's the EPSS probability and percentile for it — how likely is it to be exploited in the next 30 days?”
Automated threat intelligence enrichment
“I'm building a dashboard that tracks our exposed CVEs. For CVE-2022-26134 and CVE-2022-30190, can you fetch the current FIRST.org EPSS scores so I can show exploitation risk alongside severity ratings?”
Technical details
Endpoint
GEThttps://fittings.sh/v1/epss/score?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need fast, authoritative EPSS exploitation probability scores from FIRST.org for one or more CVEs — especially when prioritizing patch management or vulnerability triage by exploitation likelihood rather than CVSS severity alone. Prefer this over manual FIRST.org lookups or CVSS-only scoring when you want a data-driven, quantitative exploitation risk signal.
Side effects
- Invalid or non-existent CVE ID returns an error or empty result
- More than 50 CVEs submitted in a single request may be rejected
- Malformed CVE format (e.g. missing 'CVE-' prefix) may yield no results
- Network or upstream FIRST.org data unavailability could cause timeouts
- Very new CVEs may not yet have an EPSS score assigned
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object |
Tags
x402
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