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schwarztim

Rubeus MCP Server

by schwarztim

rubeus_asrep2kirbi

Convert an AS-REP response to a kirbi ticket format using the provided decryption key.

Instructions

Convert an AS-REP response to kirbi ticket format.

Takes a raw AS-REP response and converts it to a usable kirbi ticket using the provided key.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
asrepYesBase64 AS-REP or file path
keyNoDecryption key (password)
keyhexNoDecryption key (hex)
enctypeNoEncryption type
pttNoPass-the-ticket after conversion
luidNoTarget LUID for PTT
outfileNoOutput file for kirbi
nowrapNoDon't wrap base64 output
Behavior2/5

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

No annotations are provided, and the description does not disclose behavioral traits such as whether the conversion writes to a file or returns data, whether it is destructive, or any error conditions. The tool likely modifies state (e.g., creating a file), but this is not clarified.

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 extremely concise, with two short sentences that state purpose and basic action. No unnecessary details, and the key information is front-loaded.

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?

Without an output schema, the description should explain what the agent receives after conversion (e.g., base64 string, file path). It only says 'usable kirbi ticket' without specifics. Additionally, interplay of optional parameters like ptt or outfile is not explained.

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 input schema covers all 8 parameters with descriptions, achieving 100% coverage. The description does not add new meaning beyond what the schema provides, but the schema itself is adequate, 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 clearly states the tool converts an AS-REP response to kirbi ticket format, with a specific verb and resource. The tool name itself is descriptive, and the purpose is unambiguous.

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?

No guidance on when to use this tool versus alternatives like rubeus_kirbi or other conversion utilities. The description does not mention prerequisites or exclusions, leaving the agent to infer usage context.

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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