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

Annotations already declare readOnlyHint, idempotentHint, and destructiveHint=false, so safety is covered structurally. The description adds nothing behavioral: no return shape, no pagination, no indication of what the cash journal contains or what a 'period' must look like. The mention of describe_operation is the only added context.

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?

Short, but the same sentence is duplicated and then followed by an operation-ID note, so the text is boilerplate rather than information. Nothing is front-loaded because there is no substantive content to front-load.

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 tool with a nested query object, a required free-form 'period' path parameter, no output schema, and 0% schema description coverage, the description leaves essentially every operational question unanswered. It is not sufficient for an agent to invoke it correctly without falling back to describe_operation.

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 supplies zero information about 'id' or 'period' beyond the raw path placeholders. The critical ambiguity — the expected format of 'period' (month? accounting period id? ISO date?) — is left entirely unresolved, which is exactly what the description should compensate for.

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 restates the title/path verbatim, twice, with no explanation of what a 'cash journal' for a rent collection review actually is. It does identify the resource hierarchy, but an agent learns nothing beyond what the tool name already encodes, and there is no differentiation from the sibling get_leases_by_id_rent_collection_review_e4051956... which presumably returns the parent review.

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?

No statement of when to use this tool, when not to, or which sibling to prefer (e.g. the rent-collection-review tool vs. this cash-journal tool, or describe_operation for schema discovery). The only hint is that describe_operation provides native request schemas, which is a routing note rather than usage guidance.

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