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

The readOnlyHint annotation already establishes this is a safe read, and the description supplements it with the concrete HTTP route (GET /finance/expenses), which is mildly useful context. It says nothing about pagination defaults, result volume, rate limits, or what an expense record contains, so it stays at the minimum-viable level given annotation coverage.

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 name and the endpoint are each stated once. The endpoint citation earns its place mainly for traceability, though it is not operationally essential.

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 nine optional parameters, no required fields, and no output schema, the description is complete enough to call the tool but omits any hint of the response shape or pagination semantics, which an agent must guess at since no output schema exists.

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 all nine parameters including enums and date patterns are already documented in the schema. The description adds no extra semantics such as interaction between search and date filters, 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?

States a specific verb plus resource ('List recorded expenses') and even adds the Indonesian term 'biaya' and the backing endpoint, so the operation is unmistakable. It does not, however, distinguish itself from any sibling list tools or explain how expenses differ from, say, purchase invoices, which matters in a family of near-identical list endpoints.

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 when-to-use or when-not guidance, no mention of pagination expectations, and no pointer to alternatives. Usage is only implicitly inferable from the name, and a caller gets no help deciding between filtering by status_id versus searching free text.

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