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

Annotations already declare destructiveHint=true, idempotentHint=true, and readOnlyHint=false, so the safety profile is covered. The description adds genuinely new context beyond them: the associated share link stops working, which tells the agent the blast radius extends to other users. It stops short of stating whether deletion is recoverable or whether non-owners are rejected.

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 sentence, front-loaded with the verb and scope, with the side effect appended rather than buried. No filler.

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 rich annotations and a fully documented schema, the description covers identity, scope, and the key side effect. Only irreversibility and ownership/permission behavior are left unstated, which are minor gaps given the annotation coverage.

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?

Only one parameter and schema coverage is 100%, with the schema itself pointing to list_my_comparisons as the source of the id. The description adds no format, provenance, or error semantics beyond that, so baseline 3 applies.

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 (deletes) and a precisely scoped resource (the signed-in person's saved comparisons), which separates it from siblings like delete_list and delete_price_watch without needing their schemas. The clause about the share link adds a concrete distinguishing effect.

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?

Usage is only implied: an agent can infer 'call this when you want a saved comparison gone,' but the description never states when to choose this over delete_list or whether confirmation is expected. No exclusions or alternative routing are given.

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