ensure_gui

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

No annotations are supplied, so the description carries the full burden. It usefully discloses the control port (9099) and that an interactive window must appear on the user's monitor, which tells the agent this is a side-effecting environment-setup operation. However, it does not say whether the tool launches a process, whether it is idempotent when the GUI is already running, whether it blocks until the window appears, or how failure is signalled.

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

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

A single front-loaded sentence with the verb first and no filler. The only friction is that it is written in Indonesian while the surrounding tool ecosystem and sibling names are English, which adds a small parsing cost rather than verbosity.

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

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

With no parameters, no output schema, and no annotations, the description is the sole source of behavioral information, and it omits the practically important details: blocking vs non-blocking behaviour, what is returned on success, and what happens on failure (e.g. no display available). Adequate to know what the tool does, but not complete enough to predict its runtime behaviour.

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

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

The tool takes zero parameters, so the baseline is 4; there is nothing to misdocument. The description correctly implies a parameterless call whose behaviour is fully determined by the fixed port 9099 and the user's monitor.

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

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

The description states a concrete verb and resource ('Pastikan FigCraft GUI berjalan aktif' — ensure the FigCraft GUI is actively running) plus specifics: an interactive window on the user's monitor and control port 9099. That is enough to distinguish it from siblings like figcraft_screenshot or figcraft_open_file. It stops short of explicitly contrasting itself with related GUI/session tools, so it is clear but not differentiated by name.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Does the description explain when to use this tool, when not to, or what alternatives exist?

There is no when-to-use guidance, no statement of prerequisites, and no mention of alternatives. The agent must infer that this should be called before GUI-dependent operations, and it is told nothing about whether it is safe or necessary to call when the GUI is already running. Usage is only weakly implied by the word 'ensure'.

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