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kasireddy-sec

Tenable Security MCP

get_nessus_scan_history

Retrieve historical runs of a Nessus scan by scan ID to track past scan activity, compare results, and support audit or remediation reviews.

Instructions

Get historical runs of a Nessus scan.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
scan_idYes

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
resultYes

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observedv0.1.0

TDQS

C2.8/5.0
Behavior2/5

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

No annotations are provided, so the description carries the full behavioral burden. It does not disclose whether this is a safe read-only operation, authentication requirements, pagination behavior, or any other operational trait. 'Get' implies read-only, but that is left to inference.

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?

A single concise sentence with the resource front-loaded and no wasted words.

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

Completeness2/5

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

The tool is simple and has an output schema, so return values need not be described. However, the description fails to distinguish this from get_nessus_scan_history_details and provides no parameter or usage context, leaving key selection ambiguity.

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

Parameters2/5

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

Schema description coverage is 0% for the single required scan_id parameter. The description mentions 'a Nessus scan' but adds no format, type, or meaning beyond what the schema title already conveys.

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

Purpose4/5

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

The description states a clear verb and resource: getting historical runs of a Nessus scan. It does not, however, differentiate itself from likely sibling get_nessus_scan_history_details or explain what kind of history is returned.

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

Usage Guidelines2/5

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

There is no explicit when-to-use guidance, no mention of alternatives, and no exclusions. Usage is only implied by the verb 'Get historical runs'.

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