mhlb_list_transactions

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

The annotations already provide readOnlyHint=true and openWorldHint=true, indicating a safe read operation with potentially varying fields. The description adds value by specifying the output fields (date, amount, what was paid for), but it does not disclose other behavioral traits like pagination, sorting, or the effect of omitting the optional parameters (period and studentId). Given the annotation coverage, the description adds some but not rich context.

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, efficient sentence, front-loading the action and listing the output fields. It avoids fluff and is easy to parse, though it could benefit from including usage guidance or parameter context. It is not verbose, so it earns a 4 rather than a 5 because it is slightly under-specified for a tool with optional filters.

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 list operation with two optional parameters and no output schema, the description is minimal. It states the basic function and returned fields, but does not explain when to use it, how the parameters affect results, or whether there are pagination/ordering constraints. The schema covers parameter definitions, but the description lacks sufficient guidance to ensure correct invocation in varied contexts. This is adequate but with clear gaps.

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 parameters 'period' and 'studentId' clearly described (e.g., period scopes to an ordering period from mhlb_get_cart_tabs, studentId limits to one student). The description does not add any additional meaning about these parameters. Per the rubric, with high schema coverage, a baseline score of 3 is appropriate.

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 clear verb ('List') and resource ('payment transactions'), and specifies the included fields (date, amount, what was paid for). It distinguishes from the single-transaction mhlb_get_transaction and print mhlb_print_transaction, though it does not explicitly mention those alternatives. The phrase 'on the account' implies a broad scope, which is understandable given the sibling names.

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?

No guidance is provided on when to use this tool versus mhlb_get_transaction, mhlb_print_transaction, or mhlb_list_subscriptions. The description only states what it does, with no mention of typical use cases, prerequisites, or conditions under which an alternative might be preferred. An agent would need to infer from the name and context.

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