get_transactions

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

The annotations already declare readOnlyHint and openWorldHint, so the safety profile is covered structurally. The description adds the useful detail that this queries the WHMCS transactions source ('whmcs/transactions'), but says nothing about pagination, result limits, or return shape for a list operation.

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?

A single compact sentence with zero filler, scoping the resource first. Nothing is wasted and the key qualifier is front-loaded.

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 read-only list tool with two optional filters, no output schema, and annotations covering safety, the description is nearly complete. The only gap is lack of any note on pagination or result volume for the transaction list.

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 100%, so both optional filters (invoice_id, transaction_id) are already documented in the schema. The description adds no additional format or behavioral detail beyond what the schema provides, so the baseline of 3 applies.

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 resource (transactions) and scope ('for the client account'), so an agent knows this is a listing operation over account transactions. It does not, however, distinguish it from adjacent billing siblings like get_invoices, get_credit_history, or get_billing_client, so differentiation is left to inference.

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?

There is no guidance on when to use this tool versus alternatives such as get_invoice or get_credit_history, and no prerequisites or exclusions are stated. Usage must be inferred entirely from the tool name.

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