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

Annotations already declare readOnlyHint, idempotentHint, destructiveHint=false and openWorldHint=false, so the safety profile is covered structurally. The description adds zero context beyond that — it doesn't say what a checklist contains, whether it's static or derived from eventType, or how results are presented.

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?

Only three words, so there is no padding, but the brevity comes from under-specification rather than economy. Nothing is front-loaded because nothing substantive is said.

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 tool with no output schema and an undocumented enum parameter, the description would need to explain what a checklist result looks like and how eventType affects it. Neither is present, leaving the agent unable to predict 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?

The single parameter eventType has 0% schema description coverage and the description never mentions it. The enum values (wedding, birthday, conference, other) hint at behavior, but nothing explains how the chosen type changes the returned checklist, so the description fails to compensate for the coverage gap.

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?

"Event checklist planner" essentially restates the tool name and annotation title rather than stating a concrete operation. It implies a domain (event checklists) but gives no specific verb or output, and does not distinguish itself from siblings like planning_event_budget or planning_event_schedule.

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?

There is no when-to-use guidance at all — nothing about what triggers this tool versus planning_relocation_checklist, planning_packing_list, or the other event-planning siblings. The agent must infer purpose entirely from the name.

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