get_screenshot_of_window_as_json

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

The readOnlyHint annotation already signals that this is a safe read operation, and the description adds useful context about the specific data returned (layout, areas, active object, selection). However, it does not disclose any further behavioral details, such as whether it reflects only the current state or how window layout is represented.

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?

The description is a single, focused sentence with no filler or redundant wording. It front-loads the action and immediately specifies the resource and scope, making it easy for an agent to parse quickly.

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?

For a no-parameter, read-only tool with an output schema present, the description covers the essential information: what the tool returns and the scope of that return. It could be slightly more explicit about how this differs from the image screenshot variants, but the available structured context compensates for most gaps.

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 has zero parameters and the schema is empty, so the baseline for this dimension is 4. The description does not need to explain parameters, and no documentation gap exists for parameter semantics.

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 uses a specific verb ('Return') and clearly identifies the resource and scope: a JSON description of the Blender window layout, areas, active object, and selection. The mention of 'JSON description' helps distinguish it from the image-returning siblings like get_screenshot_of_window_as_image, though it does not name them.

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 guidance on when to use this tool versus alternatives such as get_screenshot_of_window_as_image or get_object_detail_summary. The JSON output implies a non-image result, but the description does not explicitly state when to prefer this tool or what it should not be used for.

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