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

Annotations already cover the safety profile (readOnly, idempotent, non-destructive, closed-world), so the description earns credit for what it adds: the exact content bundle returned and the restriction to public packages. It stops short of noting error behavior for unknown or private idents or any auth expectations.

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 front-loaded sentence with no filler; the subject (one public s&box package) and content scope are established immediately, and every clause carries information.

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?

An output schema exists, so return values need not be described, and annotations cover the safety profile. What remains thin is guidance on the ident/kind parameters and when to prefer this over the search siblings, but for a simple single-entity read the definition is largely sufficient.

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 0% for two parameters, so the description must compensate and does not: neither the ident format (namespace.name pattern) nor the kind enum (game/library/map) semantics are mentioned. 'One public package' gives no usable meaning for either parameter beyond what the schema already implies.

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?

The description states a specific verb (Read) and resource (public s&box package) and enumerates the payload sections returned (compact details, game-jam membership, publisher updates, live-server links). It implies a single-item lookup as opposed to the search_* siblings, but never names or contrasts them 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 only implied: 'one public s&box package' signals a single-package retrieval, but the description never says when to choose this over search_packages or get_server, and gives no prerequisites or exclusions. A reader can infer intent but gets no routing guidance.

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