setBudget

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

The description does not disclose behavioral traits beyond stating it's a write operation (consistent with readOnlyHint=false). It omits details like whether it overwrites, merges, or requires existing categories, and does not cover side effects or permissions.

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 single-sentence description is concise and front-loaded. However, it could be slightly more informative without losing conciseness, e.g., mentioning that it sets or updates category budgets.

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?

Given the tool has a complex nested parameter, no output schema, and minimal annotations, the description is too sparse. It lacks information about return values, error conditions, or operational effects, which is needed for a write 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 100%, so the schema already documents the 'breakdown' parameter. The description adds no additional meaning to the parameter beyond what is in the schema, resulting in baseline score.

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 'Set budget for categories' clearly states the verb (set), resource (budget), and scope (for categories). It distinguishes from sibling tools like getBudget and other transaction-related tools, though it could be more precise about whether it updates or replaces.

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 explicit guidelines on when to use this tool versus alternatives (e.g., editBudget if it existed, or getBudget for reading). The description provides no context for appropriate invocation.

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