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

Annotations declare readOnlyHint=false, idempotentHint=false, and destructiveHint=false, so safety is largely covered. The description adds one genuinely useful side-effect clarification ('Nothing scheduled is affected'), but says nothing about reversibility (can it be re-added?) or whether repeating the call is harmless despite idempotentHint=false.

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 short sentences, effect stated first and the side-effect caveat second. No padding or repetition; 'Drop' is slightly informal relative to the tool name but no information is wasted.

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 two-parameter mutation, the description covers the what and one side effect, and annotations carry the safety profile. However, with no output schema and a 50%-documented schema, the origin of suggestionId and reversibility remain unexplained.

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 coverage is only 50%: 'site' is documented in the schema while 'suggestionId' is bare (minLength only). The description does not compensate by saying where suggestion IDs come from (e.g., get_plan) or what an invalid ID does, so the undocumented parameter stays opaque.

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?

States a specific verb ('Drop') and resource ('one of the plan's suggestions') with a stated outcome ('stops being offered'). An agent can infer this is the inverse of accept_plan_suggestion, though the sibling is not named explicitly.

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 outcome clause implies the use case (removing an unwanted suggestion), but there is no explicit when-to-use guidance and no differentiation from near-name siblings like dismiss_topic, dismiss_update, or remove_plan_entry. The agent must infer the boundary from names alone.

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