Skip to main content
Glama

set_module_style

Set the visual style of a module box in a Stella system dynamics model diagram, modifying border color, background fill, font size/color, and label position.

Instructions

Set module box visual style in the diagram view

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
model_idNoSession-scoped model ID. Optional; defaults to the current model for this session.
module_nameYesModule name
border_colorNoModule border/line color
backgroundNoModule fill/background color
font_colorNoModule label font color
font_sizeNoModule label font size (e.g., 9pt)
label_sideNoModule label position: top, bottom, left, or right
Behavior2/5

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

Annotations already indicate the tool is not read-only (readOnlyHint=false) and not destructive (destructiveHint=false). The description adds no additional behavioral details beyond stating it 'sets' the style, which is already implied by the tool name and annotations.

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, efficient sentence that is concise and front-loaded with the core purpose. No redundant information.

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 property setter with 7 parameters, the description is adequate but does not elaborate on persistence, default behavior, or how it interacts with sibling tools like set_module_view. Lacks completeness in explaining side effects or dependencies.

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%, so the baseline is 3. The description does not add any extra meaning beyond what the schema already provides for each parameter.

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 (set) and the resource (module box visual style in diagram view). It distinguishes itself from sibling tools like set_module_view which handles view modes, not visual styles.

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, or any prerequisites. The description only states the purpose without context on usage scenarios.

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

Install Server

Other Tools

Latest Blog Posts

MCP directory API

We provide all the information about MCP servers via our MCP API.

curl -X GET 'https://glama.ai/api/mcp/v1/servers/bradleylab/stella-mcp'

If you have feedback or need assistance with the MCP directory API, please join our Discord server