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schwarztim

PowerShell Empire MCP Server

by schwarztim

empire_agents

List and manage active Empire agents including retrieving details, renaming, killing, and inspecting check-ins, files, and tasks.

Instructions

List and manage active Empire agents

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
actionYesAction to perform
agent_idNoAgent ID or name (required for get, kill, rename, checkins, files, tasks)
new_nameNoNew name for the agent (required for rename)
Behavior2/5

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

No annotations exist, so the description must disclose behavioral traits. It does not mention that actions like kill are destructive or that rename modifies state. The description is too brief to convey side effects or required permissions.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness2/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is only six words, which is overly concise. It lacks essential detail about the tool's functionality and sacrifices completeness for brevity.

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?

Given the tool's complexity (3 parameters, 7 action enums) and no output schema, the description is insufficient. It does not explain the purpose of each action or the dependencies between parameters (e.g., agent_id required for most actions).

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 coverage is 100%, so baseline is 3. The description adds no additional meaning beyond the parameter descriptions already present in the schema.

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 the tool lists and manages active Empire agents, clearly identifying the resource and distinguishing it from sibling tools like empire_listeners or empire_hosts. However, 'manage' is vague and doesn't specify the range of actions (list, get, kill, etc.) shown in the schema.

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 is provided on when to use this tool versus alternatives. The description lacks context about which actions are appropriate for different tasks and doesn't mention 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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