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nks1097

Splunk Enterprise MCP Server

by nks1097

splunk_investigate_ip

Investigate an IP address across firewall, proxy, authentication, and web logs to surface suspicious activity and threats within a specified time window.

Instructions

Forensic investigation of an IP address across firewall, proxy, authentication, and web logs.

Args: ip_address: Target IP address to investigate. earliest_time: Time window to scan (default '-24h@h'). count: Maximum events to return.

Input Schema

NameRequiredDescriptionDefault
countNo
ip_addressYes
earliest_timeNo-24h@h

Output Schema

NameRequiredDescriptionDefault
dataNoOutput payload or results
errorNoError message if execution failed
successNoWhether the tool execution succeeded
metadataNoExecution timing, pagination and environment details
warningsNoOperational warnings or notices
request_idNoCorrelation ID for audit trail and observability

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observedv1.0.0

TDQS

A3.6/5.0
Behavior3/5

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

No annotations exist, so the description carries the full burden. It discloses the log sources queried, which is real behavioral context, but never states that this is a read-only operation, what permissions are needed, or how costly a multi-sourcetype scan may be.

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?

One front-loaded sentence of purpose followed by a compact args block. No filler, and the structure makes the required vs. optional distinction immediately visible.

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?

An output schema exists so return values need not be explained, and all three parameters are covered. But for a forensic-investigation tool with zero annotations, the description omits read-only status, the kind of correlation performed across sources, and any performance expectations.

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 0%, so the description must compensate and does: it names all three parameters and explains each ('earliest_time' as the scan window with its default, 'count' as the event cap). It falls short of documenting Splunk time-modifier syntax or acceptable ranges for count.

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?

States a specific verb and resource: forensic investigation of an IP address, and adds the distinctive scope of scanning firewall, proxy, authentication, and web logs. It is distinguishable from splunk_investigate_user and splunk_investigate_host by name, but the description never explicitly contrasts them.

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?

'Forensic investigation' implies an incident-response/triage context, but there is no explicit when-to-use or when-not guidance. Alternatives that overlap heavily (splunk_search_ioc, splunk_investigate_host, splunk_detect_brute_force) are never mentioned, leaving the agent to infer selection.

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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