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

Annotations declare readOnlyHint=false and destructiveHint=true, so safety is covered structurally, but the description never explains what existing CRM data may be overwritten, whether a prior lifecycle setting is replaced, or what the destructive aspect entails. It adds no behavioral context beyond the annotation flags.

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?

A single short phrase with no wasted words, but it is a noun fragment rather than a sentence with a clear subject and effect, so brevity comes at the cost of specification.

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?

A destructive, non-read-only mutation with zero schema descriptions, no output schema, and a language mismatch relative to the tool name — this needs far more explanation than one ambiguous line. An agent cannot confidently call it without guessing parameter meanings.

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 0% across 4 params, so the description carries full burden, yet it only loosely gestures at driving patterns and 'contact info' while no contact parameter exists in the schema. car_model, driving_distance (with default '모름'), and the required driving_time_or_freq are never clarified.

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 Korean phrase indicates reserving a replacement-cycle notification based on driver driving patterns and contact details, which is a concrete action but never states what 'replacement cycle' refers to (vehicle part? filter?) or how it relates to the tool name 'set_crm_lifecycle'. The name/description mismatch (lifecycle setting vs. notification reservation) leaves the resource being modified ambiguous.

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?

No indication of when to use this versus the sibling tools such as get_hvac_filter_info or search_carsafe, and no prerequisites (e.g., must the user already exist in the CRM). The agent is left to infer usage entirely.

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