Set monthly budgets

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

Annotations already declare destructiveHint=true, idempotentHint=true, and readOnlyHint=false, covering the safety profile. The description reinforces this by explaining that a 0 value removes the budget, which is meaningful destructive semantics, but it omits permission requirements and the effect of partial failures in a batch.

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?

Three tight sentences with the core semantics ('set exact monthly budget amounts per category') front-loaded. The batch example is useful but slightly loose; nothing is wasted.

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 destructive, idempotent mutation with no output schema and no annotations covering permissions, the description covers the value semantics but omits auth/permission requirements and any confirmation-of-outcome behavior beyond dry_run (which is only in the schema). Adequate but with clear gaps.

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 50% and the description adds real meaning not in the schema: amounts are 'exact', denominated in the main currency, and applied per category. It does not mention dry_run, which the schema already documents, so it is not fully compensating.

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 (set) and resource (monthly budgets per category), and specifies the special category targets 'total' and 'uncategorized'. An agent can distinguish this from the sibling get_budget without opening a schema.

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?

Provides a concrete usage scenario ('copy last month's budgets to next month') and the batch-friendly framing, so the agent knows the intended bulk workflow. It does not name an alternative tool or state when not to use this one, so it falls short of 5.

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