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kanishka-namdeo

electron-mcp-server

get_main_window_info

Retrieve details about an Electron application's main window using a session ID to inspect window state, title, bounds, and properties for automated testing.

Instructions

Get information about the Electron main window

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
sessionIdYes

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observedv1.0.3

TDQS

C2.6/5.0
Behavior2/5

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

No annotations are provided, so the description carries the full burden. 'Get information' implies a read-only operation, but the description does not disclose side effects, required permissions, safety profile, or return behavior.

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 front-loaded sentence with no wasted words. It is structurally clean, though its brevity contributes little beyond the tool name.

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?

With no annotations and no output schema, the description should explain what information is returned and how sessionId matters. It states only the general purpose, leaving key invocation and return details absent.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters1/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 0%, and the only parameter (sessionId) is not mentioned in the description. The description adds no meaning beyond the schema's type definition, leaving the parameter's role and context unclear.

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 a specific verb and resource: 'Get information about the Electron main window'. It clearly distinguishes itself from sibling action tools like focus_main_window, minimize_main_window, and maximize_main_window, though it does not specify what information is returned.

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?

There is no guidance on when to use this tool versus alternatives such as get_page_info or get_protocol_info. Usage is only implied by the resource name, with no explicit conditions or exclusions.

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