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wjgoarxiv

vmd-hydrate-mcp

by wjgoarxiv

rotate_view

Rotate the 3D camera view around the x, y, or z axis by a specified number of degrees. Updates the display in real-time when using the graphical interface.

Instructions

Rotate the camera by degrees about an axis ('x'/'y'/'z'). In GUI/attended mode (VMD_HYDRATE_MCP_DISPLAY=gui) the visible window updates live.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
axisNoy
degreesNo
Behavior3/5

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

No annotations provided, so description carries the full burden. It discloses that the display updates live in GUI mode, but does not mention side effects, prerequisites, or whether rotation is relative or absolute. Adequate but could be more comprehensive.

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?

Two sentences, no wasted words. Front-loaded with the action, making it easy to scan. Ideal conciseness for a simple command.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness4/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

For a simple rotation tool with no output schema, the description covers the core behavior (rotation, axis, degrees) and a conditional display detail. Missing return value description is acceptable given the action-oriented nature.

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 description coverage is 0%, so description compensates by explaining axis ('x'/'y'/'z') and stating that degrees quantify rotation. Adds meaning beyond default values, though range or sign for degrees is omitted.

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 action (rotate the camera) and the specific parameters (degrees, axis). It is a specific verb-resource combination, and no sibling tool rotates the view, so it distinguishes itself effectively.

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?

The description gives a conditional usage hint ('In GUI/attended mode...') but does not explicitly state when to use this tool versus alternatives like zoom_view or reset_view. Usage context is implied rather than explicit.

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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