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

Annotations already establish read-only and closed-world behavior, so the description adds useful context by stating the VIP requirement and clarifying that the output involves aggregate counts and score summaries. It does not contradict the annotations, though it omits further behavioral details such as rate limits or month-default behavior.

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 two compact sentences with no filler. The comparison purpose is front-loaded, followed by the VIP prerequisite.

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 two-parameter read-only tool with no output schema, the description covers purpose, aggregate return content, and VIP access. It remains incomplete on parameter formats and month optionality/default behavior, which are important for correct invocation.

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 0%, so the description must compensate, but it only generically refers to 'one occupation' and 'one month'. It does not document that occupation must be a 6-digit code, that month must follow MM/YYYY format, or that month is optional.

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 gives a specific verb and resource: compare published visa and state pathways for one occupation in one month. It distinguishes the scope from broader siblings like compare_occupations by restricting to a single occupation, but it does not explicitly name any sibling tool.

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 description implies when to use the tool by scoping it to one occupation and one month, and it states a prerequisite ('VIP required'). However, it does not explicitly say when to choose it over siblings such as compare_pathways or compare_occupations.

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