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

Annotations cover destructive/idempotent/openWorld, and the description adds non-obvious context: protected records are refused, the exact auth scope required, and a documented 403 failure mode for unclaimed sandbox workspaces. That is real operational detail an agent cannot get from the 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?

Three short sentences, front-loaded with the action, then the constraint, then the preconditions. Every sentence carries information the caller needs.

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 3-parameter destructive tool with no output schema, the description covers action, constraint, auth, and error path. It does not say what a successful removal returns or whether it cascades, but nothing essential to calling it correctly is missing.

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 100% and each parameter already points at its discovery tool (list_storefronts, add_storefront_domain, list_storefront_dns_records). The description adds no parameter-level meaning, 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 DNS record") and scopes it to domains the workspace registered through Last Price, which cleanly separates it from add_storefront_dns_record and list_storefront_dns_records. It stops short of naming those 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?

Gives a clear when-not ("Records the storefront needs cannot be removed") plus the two prerequisites (workspace-settings write credential, claimed workspace with sandbox keys refused 403). No alternatives are named for the case where the record is protected, which keeps it below a 5.

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