shared_budget_update_preview

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

Annotations already declare readOnlyHint, idempotentHint, openWorldHint, and destructiveHint, so the safety profile is covered. The description only reinforces 'Preview' and adds no context about what the preview returns, whether it calls an external service, or how it relates to applying the update.

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 a single front-loaded sentence with no wasted words. Its brevity is efficient, though the unexplained acronym 'LOC' makes the concise phrase less clear than it could be.

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?

Although an output schema and detailed annotations reduce the need to explain return values and safety, the description does not clarify what 'typed LOC' means, which fields the preview accepts, or what the preview behavior implies. For an 8-parameter tool, the description is too sparse to be complete.

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?

With 8 parameters and only 25% schema description coverage, the description must compensate, but it mentions no parameters at all. Six parameters such as sharedBudgetId, value, startTime, endTime, billingProfile, and name are left with no added meaning beyond their names and types.

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 verb 'Preview' and resource 'shared-budget update' indicate a non-mutating simulation, and the name distinguishes it from siblings such as shared_budget_delete_preview and shared_budget_get. However, 'typed LOC' is unexplained jargon, so the exact purpose of the preview remains vague.

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 provides no guidance on when to use this tool versus alternatives, no prerequisites, and no indication of what a preview entails. The 'Preview' name implies it should be used before an update, but the description never states this.

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