epss_score
FIRST EPSS exploit prediction score for a CVE. Returns probability (0-1) of exploitation in the next 30 days plus the percentile rank.
This record as markdown: /tools/io-github-blackboxfoundry-livedatalink/epss-score.md
What epss_score does on Livedatalink
AI agents call epss_score to retrieve information from Livedatalink without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
| Parameter | Type | Required | Description |
|---|---|---|---|
cve_id | string | Yes | CVE identifier. |
Parameters from the server's own tool schema.
Why epss_score is rated Low
The epss_score tool queries an external database (FIRST EPSS) to retrieve exploit prediction metrics for a given CVE identifier. This is a read-only retrieval operation that retrieves and returns information without side effects. No data is created, modified, deleted, or executed.
From the tool's definition Tool description states it 'Returns probability (0-1) of exploitation in the next 30 days plus the percentile rank' — a pure data retrieval operation with no modification, deletion, execution, or financial impact.
Attacks that exploit this kind of access
The rule that runs epss_score safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Livedatalink, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For epss_score, this is the rule to start with:
epss_score is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect Livedatalink, apply this rule, and every epss_score call is checked against it from then on.
Questions about epss_score
FIRST EPSS exploit prediction score for a CVE. Returns probability (0-1) of exploitation in the next 30 days plus the percentile rank. It is categorised as a Read tool in the Livedatalink MCP Server, which means it retrieves data without modifying state.
epss_score accepts 1 parameter: cve_id. Required: cve_id. The full parameter table on this page comes from the server's own tool schema.
Register the Livedatalink MCP server in PolicyLayer and add a rule for epss_score: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Livedatalink. Nothing to install.
epss_score is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the epss_score rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.
Set action: deny in the PolicyLayer policy for epss_score. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.
epss_score is provided by the Livedatalink MCP server (https://livedatalink.ai/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
More on Livedatalink, and thousands of servers like it.
This server
Across the catalogue