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ptrel1

NapCat MCP Server

by ptrel1

get_version_info

Retrieve the NapCat server's version details to confirm the current release and verify compatibility for API operations.

Instructions

Get version information

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault

No arguments

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observedv0.3.0

TDQS

C2.6/5.0
Behavior1/5

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

With no annotations provided, the description must carry the full burden of behavioral disclosure. It only states that it retrieves version information, but says nothing about whether it's read-only (likely), any side effects, authentication requirements, or the format/structure of the returned data. This is a significant gap.

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

Conciseness4/5

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

The description is a single, concise sentence that is appropriately front-loaded. It avoids verbosity and wasteful filler. However, the brevity borders on under-specification given the low amount of contextual information, though for a simple tool it's acceptable.

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 no output schema, no annotations, and a terse description, the tool is incomplete. An agent would not know what the response will contain (e.g., a version string, object with version numbers, platform details) or any behavioral nuances. For such a simple tool, a couple of sentences clarifying the return value would be sufficient, but they are missing.

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?

The tool accepts zero parameters, and the schema confirms this with an empty properties object. Per the baseline rule for 0 params, no parameter documentation is needed, and the description doesn't need to add meaning beyond the schema. It correctly implies no input is required.

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

Purpose3/5

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

The description states a clear verb ('Get') and resource ('version information'), so it's not a tautology. However, it doesn't specify what kind of version information (system, application, API version) or differentiate from many sibling get_* tools like get_status or get_login_info. The purpose is clear but overly generic.

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 given on when to use this tool versus the many related get_* tools. There are no explicit conditions, exclusions, or alternatives mentioned. The intended use is implied by the name, but there's no context about the correct scenario (e.g., when you need the software version vs. runtime status).

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