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

With no annotations, the description carries the full burden for a destructive operation. It never says whether deletion is permanent, what happens if the ID does not exist, whether confirmation or special permissions are needed, or what is returned.

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?

A single front-loaded sentence that names the action and the selector with zero filler.

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 one-parameter tool this is close to adequate, but a destructive tool with no annotations and no output schema should at least note irreversibility and error behavior on an invalid or already-deleted ID.

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?

Only one parameter and the schema documents it fully at 100% coverage, including provenance (list_budget_alerts or register_budget_alert). The description merely restates 'by its ID' and adds nothing beyond the schema, so the baseline of 3 applies.

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 (delete), a specific resource (budget-spend alert), and the selector (ID). It implicitly distinguishes itself from delete_price_alert and delete_conversation by naming the resource, though it never explicitly routes against those siblings.

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 when-to-use or when-not guidance, but usage is clearly implied and the schema points to list_budget_alerts and register_budget_alert as ID sources, which is real context for locating the target.

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