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

The annotations already declare read-only, idempotent, non-destructive behavior, and the description adds useful operational context: unauthenticated public access and a 60 requests/min per IP rate limit. It also confirms zero state mutation, though the return-value summary is somewhat generic.

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 purpose is front-loaded, which is good, but the description contains redundant boilerplate such as 'Call this tool when you specifically need to execute track_order' and a generic alternatives sentence. It is not excessively long, but several phrases do not earn their 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?

For a simple one-parameter read-only tool with rich annotations and no output schema, the description covers purpose, usage, access model, rate limits, and a basic return description. It could be more precise about return fields and sibling-tool boundaries, but it is largely complete for correct invocation.

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%, and the schema already documents order_id as a UUID-formatted string with an example. The description only restates that order_id is required and identified by Order ID, adding no real semantics beyond the structured schema.

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 and resource: 'Look up order status and shipping progress' for an existing MagSnap order by Order ID. It names sibling alternatives, but the contrast is generic ('for their respective operations') rather than explaining precise boundaries.

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?

It includes a 'When to use' section and a 'Do NOT use' sentence naming other tools, so some routing guidance is present. However, the when-to-use text is largely tautological ('execute track_order') and does not give concrete conditions for choosing this tool over the alternatives.

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