get_order_id

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

With no annotations provided, the description carries full burden. 'Look up' clearly indicates a read-only operation, but it does not disclose behaviors such as handling multiple orders, error cases for invalid/missing customer IDs, or whether it returns the most recent order. No contradiction with annotations since none are provided.

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 description is a single, front-loaded sentence that states the verb and resource immediately. It is concise with zero unnecessary words or repetition.

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?

The tool is simple with one parameter, and an output schema exists to handle return value details. The description adequately conveys the core purpose and input. Minor gaps include lack of guidance on edge cases and alternatives, but these do not severely impede usability for a straightforward lookup.

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%, so the description must add meaning. It merely restates the parameter by saying 'given customer ID' without explaining its format, constraints, or possible values. The schema already provides type and required status, so the description adds no extra semantic value.

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 uses a specific verb 'look up' and resource 'order ID' with an input 'customer ID', clearly distinguishing it from sibling tools like lookup_customer_info or list_customers. The purpose is unambiguous and directly tied to the tool name.

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 description implies usage (when you need an order ID for a customer ID) but does not explicitly state when to use this tool over alternatives or provide exclusions for edge cases like multiple orders. No sibling tool mention is present, so guidance is only implicit.

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