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

Annotations already declare readOnly, idempotent, openWorld and non-destructive. Since there is no output schema, the description adds real value by disclosing the return contents (current settings plus an advanced-accessibility flag). It does not mention auth or permission requirements.

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?

The content is front-loaded, but four markdown sections are used to convey a single fact. The three 'When to Use' bullets (settings display, configuration checks, feature verification) restate essentially the same scenario, adding bulk without new 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?

With no output schema and no parameters, the description correctly compensates by naming the returned values. For a simple read-only getter this is nearly sufficient; only auth/permission context 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?

Zero parameters, and the description explicitly states 'No parameters required,' which matches the empty schema. Baseline 4 applies for a parameterless tool.

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 (Get) and resource (supply customization preferences), and the name contrasts cleanly with the write sibling put_supply_customization. It is clear what the tool returns, though it never explicitly names its write counterpart.

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?

The 'When to Use' section gives three concrete contexts (settings display, configuration checks, feature verification). There is no explicit 'when not to use' or named alternative, but the conditions for invoking it are clear enough.

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