billing_transactions_get_list

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

Annotations already declare readOnlyHint, idempotentHint, destructiveHint=false and openWorldHint, so the safety profile is fully covered without the description. The description adds only a raw endpoint path, saying nothing about result volume, pagination behavior, or ordering — which matters for a list endpoint on an open-world API.

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 text is short and front-loaded, so nothing is wasted. But "GET /billing/transactions" merely restates the already-obvious resource path and consumes one of the two lines without adding information.

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 four-parameter listing endpoint with no output schema and no parameter documentation, the definition is under-specified: an agent cannot tell whether filter accepts a query string or field syntax, or how pagination should be driven. The annotations cover safety but not the mechanics the caller needs.

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% and the description does not mention any of the four parameters. The meaning, syntax and allowed values of sort, filter, limit and offset are entirely undocumented, leaving an agent unable to construct a correct filtered query.

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?

"Get transaction list" names a specific verb and resource, which is enough to know it retrieves a collection. However, it offers no distinction from the sibling billing_transactions_get_one, so the agent must infer from the name that this is the collection variant rather than a filtered single-record lookup.

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 versus the single-transaction sibling, no mention of the pagination model, and no prerequisites or scope constraints. The agent gets a resource name and nothing about selection context.

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