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schwarztim

Mimikatz MCP Server

by schwarztim

mimikatz_kerberos_list

List active Kerberos tickets in the current session, revealing cached credentials for security assessments. Optionally export tickets to .kirbi files for offline use.

Instructions

List Kerberos tickets in current session

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
exportNoExport tickets to .kirbi files

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observedv1.0.0

TDQS

B3.3/5.0
Behavior2/5

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

There are no annotations, so the description carries the full burden of behavioral disclosure. It implies a read-only listing but does not disclose ticket output format, privilege requirements, or side effects such as writing .kirbi files when export is enabled. The export behavior appears only in the schema.

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, front-loaded sentence with no filler or repetition. It states the action, the resource, and the scope efficiently.

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?

For a simple list tool with one optional parameter and no output schema, the description plus parameter schema is minimally viable. However, without annotations it lacks behavioral context, and it offers no guidance on how this relates to sibling mimikatz commands.

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?

Schema description coverage is 100%, and the single optional export parameter is already documented in the schema. The description adds no additional meaning about parameters, so the baseline score 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 states a clear verb ('List'), a specific resource ('Kerberos tickets'), and a scope ('in current session'). This distinguishes it from the many sibling mimikatz tools, especially mutation-focused ones like golden, silver, ptt, and purge.

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?

The description provides no explicit guidance on when to choose this tool over its siblings, nor any exclusions or prerequisites. 'In current session' gives scope but does not help an agent decide between this and related kerberos or sekurlsa tools.

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