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

Annotations already declare destructiveHint=true and idempotentHint=true, so the safety profile is covered. The description adds a concrete, non-structured detail: the authorization gate 'service_areas:write scope', which is exactly the kind of auth-needs context that earns credit beyond annotations.

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 waste. The action and target are front-loaded and the prerequisite follows immediately.

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 whose annotations carry the destructive/idempotent semantics and whose schema documents the sole ID, the description supplies enough to invoke correctly. Adding what happens on a missing/stale link ID would make it fully 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?

Only one parameter with 100% schema description coverage ('Service area site link ID'), so the schema fully documents it. The description adds no format, source, or lookup guidance beyond what the schema already provides, making the baseline 3 appropriate.

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'), which implicitly distinguishes it from delete_service_area and delete_site by making clear only the association is severed, not either entity. It does not, however, name those closely-related siblings explicitly.

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 implied by the name and scope statement, but there is no explicit when-to-use guidance or routing to alternatives such as list_service_area_sites or create_service_area_site. The precondition (write scope) is present but no exclusions are offered.

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