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GreyNoise-Intelligence

greynoise-mcp-server

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Get CVE Details

get-cve-details
Read-only

Retrieve GreyNoise intelligence for a single CVE, including CVSS and EPSS scores, KEV status, exploitation statistics, and observed IP activity categorized as benign or threat.

Instructions

Get GreyNoise vulnerability intelligence for one CVE: CVSS/EPSS scores, KEV status, exploitation stats, and observed benign/threat IP activity. cve_id must match 'CVE-YYYY-NNNNN' (e.g. CVE-2023-6549); case-insensitive.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
cve_idYesCVE ID in 'CVE-YYYY-NNNNN' format (e.g. CVE-2023-6549)

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
idYes
detailsYes
timelineYes
exploitation_statsNo
exploitation_detailsYes
exploitation_activityNo
Behavior5/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

The description discloses that the tool provides vulnerability intelligence (read-only operation) and lists returned data categories (scores, stats, IP activity). No contradictions with annotations (readOnlyHint, openWorldHint).

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Single sentence, front-loaded with the core purpose, followed by specific details. No redundant words; every clause adds value.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness5/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given the single parameter and presence of an output schema, the description fully covers what the tool does and how to invoke it. No additional details needed.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters4/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema coverage is 100% for the single parameter. The description adds format validation and case-insensitivity guidance, enhancing understanding beyond the schema's description.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly identifies the tool's purpose: retrieving GreyNoise vulnerability intelligence for a single CVE. It lists specific data points (CVSS/EPSS scores, KEV status, etc.) and distinguishes itself from sibling tools that handle sessions, IP lookups, or bulk operations.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines4/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description specifies the required format for cve_id ('CVE-YYYY-NNNNN') and notes case-insensitivity. It implies single-CVE usage but does not explicitly state when not to use it or mention alternatives, though sibling context makes the scope clear.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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