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

Annotations already declare readOnlyHint=true and openWorldHint=true, so the safety profile needs no restating. The one added piece of behavior is that the response includes the set's rows, which is genuine context beyond the annotations, but there is nothing about pagination, row volume, or error behavior for an unknown id.

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?

It is one short fragment with zero waste, but this is under-specification rather than concision – there is no leading verb or scope statement to front-load, so the brevity costs clarity.

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?

The tool is simple (1 required param, full schema coverage, annotations present), so little is needed. However, with no output schema, the description should say more about what a 'reference data set with its rows' contains to set expectations for the response.

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?

There is a single parameter at 100% schema description coverage, and the schema already explains that the id comes from gocanvas_list_reference_data. The description adds no further meaning, 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 phrase 'One reference data set with its rows' identifies the resource and its cardinality (single set, including child rows), which implicitly contrasts with the list sibling. But there is no verb, and the reader must infer from the tool name that this is a fetch operation rather than something that returns derived/aggregated data.

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?

No guidance on when to call this versus gocanvas_list_reference_data or other get_* tools. The only routing hint ('id from gocanvas_list_reference_data') lives in the schema parameter description, not in the tool description.

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