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

Annotations already declare readOnlyHint=true, destructiveHint=false and openWorldHint=true, so the safety profile is fully covered. The description's only addition is the transfer-parameter applicability note, which largely restates what the schema already says ('Money in / money out only'). No return shape, pagination behavior, or default-status nuance is disclosed beyond structured fields.

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 sentences plus the endpoint path — the transaction-type scope is front-loaded ahead of the parameter caveat, and every clause carries information. No filler or restated title.

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 read-only filtered list with 11 fully documented parameters, an enum-bound required type, and no output schema, the description covers the essentials. The remaining gap is pagination/return-shape behavior, which the schema partially addresses via next_page on the page parameter.

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%, with all 11 parameters documented including enums and defaults, so the schema does the heavy lifting and baseline 3 applies. The description reinforces the transfer exclusion for contact_id and sort_by but adds no filtering semantics, date-range behavior, or sort interaction detail 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 a specific verb (list) and resource (banking transactions), and enumerates the three transaction families it covers (money in, money out, transfers). It maps cleanly onto the GET /banking/{incomes|expenses|transfers} endpoint, so an agent knows this is a collection query and can distinguish it from the singular bukku_get_bank_transaction, though it never names that sibling explicitly.

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?

It gives one concrete usage constraint — contact_id and sort_by do not apply to transfers — which tells the agent how to shape a transfer query, but it offers no guidance on when to choose this tool over bukku_get_bank_transaction or the account/journal siblings. Usage is implied rather than instructed.

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