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 the auth requirement (service_areas:write scope), which is genuinely beyond the structured data. It stops short of saying whether the link removal cascades or 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?

Two short sentences, zero filler, action stated first and the prerequisite second. Nothing to trim.

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 single-parameter delete with no output schema and rich annotations, the description covers the operation and the auth scope. Only minor gaps remain, such as whether the removal is reversible or has side effects on related records.

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 coverage is 100%, so the single 'id' parameter is fully documented in the schema as the service area site link ID. The description adds no format or sourcing detail beyond that, so the 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 and resource — 'Remove a site link from a service area' — and the phrase 'site link' distinguishes it from delete_service_area (which removes the service area itself) and delete_site. An agent can tell this apart from siblings in that family without reading the 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?

The description names the required service_areas:write scope, which is a real prerequisite, but it gives no when-to-use guidance relative to alternatives such as delete_service_area or delete_service_area_system_class, and no note about what state the service area must be in. Usage is only implied.

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