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

Annotations already declare destructive, idempotent and non-read-only, so the safety profile is covered. The description still adds two genuinely non-obvious facts: the operation is free (no credits), and an already-approved community copy survives the deletion. It stops short of saying whether the preset itself is recoverable.

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?

Three short sentences with no filler; the cost signal is front-loaded and the exception clause follows the main action. The leading 'Free.' is slightly abrupt but earns its place by answering the cost question early.

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 one-parameter destructive tool with annotations covering reversibility and idempotence, the description covers cost and the community-copy side effect. The unresolved 'id' semantics and the lack of any guidance on locating or confirming the target preset keep it at minimum-viable rather than complete.

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% and the single 'id' property is undocumented. The description only hints that the id refers to one of the caller's own saved presets; it does not state the identifier format, where to obtain it (e.g. list_custom_presets), or what happens with another user's id.

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 ('Delete') and resource ('one of your saved custom presets'), which implicitly separates it from delete_brand_preset and delete_glossary by scope. It does not explicitly name a sibling, so the differentiation rests on the reader's inference.

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?

'one of your saved custom presets' implies an ownership precondition, and the gallery note clarifies a boundary case. But there is no explicit guidance on when to use this versus delete_brand_preset or how it relates to submit_custom_preset/update_custom_preset.

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