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

readOnlyHint=true already tells the agent this is a safe read. The description adds useful content context (each entry carries its debit/credit lines), but says nothing about default result size, pagination behavior, or ordering, which matter for a list tool.

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?

Two short, front-loaded sentences with no filler; the resource definition comes first and the filtering hint second. Slightly thin rather than padded, but every phrase earns its place.

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?

With no output schema, the description does cover the return shape at a high level (entries plus debit/credit lines). It omits pagination/ordering behavior and the unfiltered default case, leaving the agent to infer how large a result set to expect.

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%, so page, pageSize, and the query syntax are fully documented in the schema. The description's 'filter by date or number' only partially reflects the query parameter's actual filterable fields (which also include title and reversal links), so it adds no meaning beyond the schema.

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?

States the resource precisely (bookkeeping journal entries, with the domain synonym 'verifications') and clarifies that debit/credit lines are included. Combined with the name/title this clearly distinguishes it from the singular bokio_get_journal_entry, though the description itself never uses a list verb or explicitly contrasts with that sibling.

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 phrase 'Filter by date or number' hints at the intended query patterns, but there is no explicit when-to-use guidance, no mention of when to prefer bokio_get_journal_entry for a single entry, and no note on what happens when no filter is supplied.

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