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

Annotations already declare readOnlyHint=true and destructiveHint=false, so the safety profile is covered. The description adds genuinely useful context beyond that — that vehicle/appliance/pet packs carry linked entities and a suggested anchor date — but most of its remaining content enumerates return fields that the output schema already documents.

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?

Front-loaded with the purpose and example packs before the longer enumeration of returned fields. It is a single dense sentence plus one short routing sentence, though the field-by-field listing of pack items partially duplicates the output schema and could be trimmed.

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 parameterless read-only listing with an output schema present, the definition covers everything an agent needs: what the tool returns, how packs relate to owned entities, and where it fits in the apply flow. No gaps remain 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?

The tool takes zero parameters, so the baseline is 4. There is nothing for the description to disambiguate, and it correctly avoids inventing filter or pagination arguments that do not exist.

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 and resource ('List the ready-made task packs the household can add') and immediately scopes it with concrete examples (moving house, new baby, car maintenance). An agent can distinguish this from list_tasks, list_recurring_tasks, and apply_task_pack without opening any 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?

Ends with an explicit sequencing instruction: 'Use it before apply_task_pack,' which names the sibling it feeds and the condition that selects it. It does not state when not to use it or mention any alternative discovery path, but for a read-only catalog listing the routing guidance is clear.

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