get_member

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

With no annotations provided, the description carries the behavioral burden. 'Retrieves' conveys read-only intent and enumerates the returned data fields, which is useful context. However, it does not disclose edge-case behavior such as member-not-found handling, access requirements, or whether all fines/loans are returned.

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 one sentence, front-loaded with the action and object, and contains no filler. Every word contributes meaningful information about the tool's purpose.

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 single-parameter getter with an output schema present, the description covers the essential input and purpose. It is slightly incomplete in not relating itself to get_loans or check_fines, but that gap is more about usage guidance and does not block 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 description coverage is 0%, so the description must compensate. It explicitly states the lookup is 'by member ID', reinforcing the role of member_id even though the property name and integer type are already self-descriptive. It adds minimal extra meaning but enough for a single straightforward parameter.

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 the specific verb 'Retrieves' and names the resource (member) plus the exact data scope: profile, loan history, and outstanding fines. This clearly distinguishes it from get_book and list_members, and shows it aggregates data that get_loans and check_fines provide individually.

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 when to use it: when a member's combined profile, loan history, and fines are needed by member ID. However, it provides no explicit when-not guidance or alternatives, and overlapping siblings like get_loans and check_fines exist without any routing advice.

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