dpo2012b_capture_screenshot

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

Annotations indicate readOnlyHint=true and destructiveHint=false, and the description adds that the operation uses the HARDCopy START command and returns Base64 image data. This gives useful behavioral context beyond the annotations, although it does not elaborate on return structure beyond the output schema.

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, front-loaded sentence with no filler. It conveys the action, target, mechanism, and output format efficiently.

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 simple read-only screenshot tool with an output schema and annotations, the description covers the essential information: what is captured, how (HARDCopy START), and the output format. It lacks parameter detail, but given the simplicity of the tool, the overall context is reasonably complete.

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 schema has one parameter, image_format, with no description, and the description does not explain valid format values or how they affect the output. Since schema description coverage is 0%, the description should compensate but only mentions 'Base64 image data' without relating it to image_format.

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 'Capture' and resource 'DPO2012B screen', and adds the method 'HARDCopy START' and output format 'Base64 image data'. This clearly distinguishes it from sibling tools like dpo2012b_acquire_waveform and dpo2012b_measure.

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?

The purpose statement implies this tool is for screen snapshots, distinct from waveform acquisition or measurement tools, but it provides no explicit when-to-use guidance or alternative tool names. An agent must infer usage from the tool name and sibling context.

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