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

Annotations already declare readOnlyHint=true and openWorldHint=false, so the safe-read profile is covered. The description adds genuine behavioral context: personal data is only returned to the access_token holder (an auth constraint), and it enumerates what portion of order state comes back, including "missing items".

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 with zero filler; the returned-content inventory is front-loaded before the routing hint and the auth note. Every sentence earns its place.

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?

With no output schema, the description compensates by enumerating the major returned elements (field values, documents, price, status, gaps). For a read-only tool this is nearly complete; only the exact shape/format of those sections is left unspecified, which is minor.

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%, so both order_id and access_token are already well documented in the schema (including the warning to never show the token to the user). The description adds no additional parameter syntax or format detail beyond that, 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+resource (reading the full certificate order state) and enumerates the returned content: collected field values, attached documents, price, status, and missing items. It explicitly distinguishes itself from the sibling get_certificate_order_status, so an agent can pick the right tool without opening schemas.

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 explicit when-to-use ("when you need to read what has already been saved") and names the alternative for a narrower need (get_certificate_order_status for fulfillment progress alone). This is a clear routing rule between two similar siblings.

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