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greynoise-mcp-server

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quick-check-ip

Perform a lightweight check of an IP address using GreyNoise to assess threat level and identify potential malicious activity.

Instructions

Get a fast, lightweight check of an IP address from GreyNoise

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
ipYesIP address to look up
Behavior2/5

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

No annotations are provided, and the description only uses 'fast, lightweight check' without disclosing what the check returns, any rate limits, or behavioral traits like caching or data freshness.

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?

The description is a single sentence, concise, and front-loaded with the key qualifiers 'fast' and 'lightweight', making it efficient and easy to parse.

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

Completeness3/5

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

Given the simple structure (1 parameter, no output schema) and the presence of many similar sibling tools, the description is minimally adequate but lacks information about return values or when to prefer this over alternatives.

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

Parameters3/5

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

The schema has 100% coverage with a single 'ip' parameter described as 'IP address to look up'. The description adds no additional meaning beyond the schema, so a baseline of 3 is appropriate.

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 uses a specific verb 'Get' and clearly states the resource 'fast, lightweight check of an IP address'. It implies differentiation from siblings like 'lookup-ip-context' and 'multi-ip-check' by emphasizing speed and simplicity.

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

Usage Guidelines3/5

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

The description hints at usage for quick checks but does not explicitly state when to use this tool versus alternatives, nor does it provide exclusions or prerequisites.

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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