set_budget

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

No annotations are present, so the description carries the disclosure burden. 'Set or update' reveals upsert semantics and signals a write operation, which is genuinely useful. It does not mention side effects, validation rules, or permissions, but the core mutating behavior is transparent.

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?

The description is one compact sentence with no filler. The verb and target are front-loaded, and every word serves the core message, making it highly scannable for an agent.

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?

The tool is simple: two scalar required parameters and no nested objects, and an output schema exists so return values need not be described. However, the missing parameter semantics and the lack of behavioral detail beyond 'set or update' make this only minimally adequate for correct invocation in a broader domain.

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%, so the description must compensate by explaining parameter meaning. It names 'category' but never describes 'monthly_limit' as the recurring budget amount or cap, leaving half the parameters under-specified. The parameter name and type make the intended meaning partly recoverable, but the description itself adds little.

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 states a specific verb pair, 'set or update', and a specific resource, 'budget for a category', making the operation unmistakable. It also differentiates from the sibling check_budget_status through its write-oriented verb, even without naming 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 description implies when to use the tool: whenever the user wants to create or modify a category budget. However, it provides no explicit guidance about alternatives, such as using check_budget_status for read-only status checks, so usage is implied rather than stated.

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