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

The description is consistent with the readOnlyHint=true annotation and describes a safe read operation. It does not add meaningful behavioral context beyond the annotation, such as response shape, error behavior, or auth requirements, though the simplicity of the operation makes this a minor gap.

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?

One clean sentence with no filler. The verb and resource are front-loaded, and every word contributes to meaning.

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 getter with one fully documented required parameter and a readOnlyHint annotation, the definition provides everything an agent needs to select and invoke the tool correctly. No output schema exists, but the 'get' semantics sufficiently imply the returned resource.

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?

Schema description coverage is 100%, with the single parameter device_set_id documented as 'The device set id (pvs_...)'. The description only repeats 'by id' and adds no new parameter semantics beyond what the schema already provides, so the baseline of 3 applies.

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 ('Get') and resource ('preview device set') with the scoping qualifier 'by id,' making the operation unambiguous. It clearly stands apart from sibling tools like list_preview_device_sets, archive_preview_device_set, and replace_preview_device_set.

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 phrase 'by id' implies this tool is for retrieving a single known device set rather than enumerating or mutating one. However, it does not explicitly mention alternatives such as list_preview_device_sets or state when not to use this tool, so usage guidance is only implicit.

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