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

Annotations already declare readOnlyHint=true, idempotentHint=true, and destructiveHint=false, so the safety profile is covered. The description adds 'Read-only: it does not create anything,' which reinforces the annotation but provides no additional behavioral depth such as response format, potential errors, or limitations. With annotations present, this does not go beyond the minimum.

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 sentences, front-loads the core purpose and inputs, and explicitly notes the read-only nature. Every sentence contributes useful information without redundancy or filler, making it highly concise and well-structured.

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 description gives a high-level summary of inputs and output, but the schema lists zero required parameters, which conflicts with the description's implication that the US state and membership are always needed. It also does not clarify what constitutes a 'package' or what happens with partial inputs, and no output schema exists to fill this gap. The presence of sibling get_llc_options further suggests that more usage context would be valuable.

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%, so each parameter is already documented in the input schema. The description only summarizes the parameter classes (state, membership, services) without adding any new meaning about formats, defaults, optionality, or interdependencies. It meets the baseline but adds no value beyond the schema.

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 clearly states the tool's function: it recommends an LLC package based on US state, membership count, and needed services, and explains why. However, it does not explicitly differentiate itself from the sibling get_llc_options tool, which likely also deals with package selection, so it misses the additional clarity that naming a sibling would provide.

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 usage by specifying the required inputs ('Given the US state, whether the LLC has more than one member, and which services the user needs'), but it provides no explicit guidance on when to choose this tool over alternatives like get_llc_options, and does not mention any exclusion conditions or fallback paths.

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