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

No annotations provided, so the description must fully disclose behavior. It states it returns status codes with labels and meanings, which is adequate for a zero-parameter read-only tool. Lacks mention of whether the data is cached or live, but this is minor for a reference data 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?

Two sentences, front-loaded with purpose and followed by usage guidance. Every sentence adds value with no redundancy.

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 zero-parameter tool with no output schema, the description fully covers what the tool does, what it returns, and how to use its output. No gaps given the tool's simplicity.

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 coverage is 100% with no parameters, so the description has no parameters to explain. The description adds value by naming the response contents (status codes, Thai labels, English meanings), which helps agents understand what the empty input will produce.

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 specifies 'Returns every status code with its Thai label and English meaning', which clearly states the tool's purpose as a reference data provider for the order status pipeline. It is distinct from siblings like list_orders or update_order_status by being a read-only enumeration of statuses.

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?

Explicitly says 'Use these codes with list_orders and update_order_status', giving direct guidance on when to use this tool and how it relates to sibling tools. No alternative or when-not-to-use is needed given its simple reference nature.

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