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

Annotations already declare destructiveHint=true, so the deletion risk is covered structurally; the description adds two things beyond that — that the operation is restricted to owners, and that references to the removed fee resolve against the remaining fees. What's missing is reversibility (no restore_fee sibling exists) and behavior when the id is unknown.

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?

Extremely short and front-loaded with the action, then the consequence, then the permission gate — good ordering with no filler. The middle clause is compressed to the point of being slightly cryptic, which costs a point on communication rather than length.

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 the safety profile, the description supplies the auth requirement and post-deletion semantics. It stops short of stating irreversibility and error behavior, but nothing essential to invoking it correctly is absent.

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?

Single required parameter with 100% schema coverage, so the schema already explains 'id'. The description adds nothing about id format, source, or how to obtain it (e.g., from get_fee or query_fees), which is the baseline-3 outcome when the schema does the work.

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?

Names a specific verb and resource with explicit singular scope ('Remove one fee'), which separates it from the list/query siblings like query_fees and get_fee. It doesn't explicitly contrast with save_fee, so an agent must infer that save_fee is the edit path rather than delete-and-recreate.

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?

'Owner only' gives a real precondition for calling it, which is useful selection guidance. However, there is no explicit statement of when to remove versus when to modify via save_fee, nor any guidance on what to do if the fee is still referenced elsewhere.

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