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

Annotations already declare readOnlyHint=true and openWorldHint=false, so the safety profile is covered. The description adds a useful data-scope guarantee ('Internal billing and provider records are never exposed'), which is real value beyond the annotations, but says nothing about pagination behavior or result volume for a paged list tool.

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 tight sentence with no waste; scope, ordering, and payload are front-loaded and the data-exclusion caveat follows naturally.

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 read-only listing tool with no output schema and fully documented parameters, the description covers what is returned and what is deliberately withheld. Only the pagination/traversal behavior is left unaddressed, which is a minor gap given the schema documents page and limit.

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% — page and limit are both documented with defaults and bounds in the schema. The description adds no syntax, default, or constraint detail beyond it, so the baseline of 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 ('Lists the workspace's done-for-you orders') plus ordering and returned contents (status, cost breakdown, domains, mailboxes). The plural scope implicitly separates it from get_dfy_order, but no sibling or alternative is named explicitly, so it stops short of a 5.

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?

No when-to-use context, no prerequisites, and no routing to alternatives such as get_dfy_order for a single order or search_dfy_domains for domain lookup. The agent must infer usage purely from the name.

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