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

Annotations already declare destructiveHint=true and readOnlyHint=false, so the basic safety profile is covered. The description adds a genuine business rule beyond that: the delete is refused if it would leave a category requiring more choices than remain, and the error explanation names the offending category. It does not say what happens to historical orders referencing the choice.

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?

Two tight sentences, zero filler, with the operation stated first and the failure condition second. Every clause carries information an agent needs.

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 destructive delete with no output schema and annotations covering the safety profile, the description is nearly sufficient: it states scope and the one non-obvious refusal condition. Minor gap is the absence of any cascade/impact note.

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% and both parameters already point at their source lookups (get_modifier, get_modifiers). The description adds nothing about parameter format or provenance, so the baseline 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?

Specific verb plus resource with explicit cardinality ('Remove one choice from a modifier'), which also implicitly separates it from hub_delete_modifier (the whole modifier) and hub_add_modifier_choice. An agent can route to this tool without opening the schema.

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 refusal precondition signals when the call will fail, which is useful, but the description never names the alternatives an agent should consider instead (hub_update_modifier_choice to rename, hub_reorder_modifier_choices to reorder, hub_delete_modifier for the whole set). Usage is only implied by the verb.

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