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

The description adds meaningful behavioral detail beyond the destructiveHint annotation: the redirect stops working, click history is permanently deleted, and 404 is returned for unknown ids and links in other workspaces. This helps the agent anticipate side effects and error cases.

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 concise sentences, each earning its place: the operation, the consequences and when to prefer it, and the prerequisites/error behavior. The most important information is front-loaded.

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 description covers purpose, side effects, usage prerequisite, and error semantics, which is strong for a destructive tool. It falls slightly short by not explaining the required `idempotency_key` or indicating what a successful response looks like, but the core invocation context is largely 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?

The description usefully clarifies that the `id` parameter comes from aidelly_list_short_links, but it does not explain the required `idempotency_key` or the optional `query`, `brand_id`, and `workspace_id` semantics. With schema description coverage at 40%, the description needed to compensate more for the undocumented required parameter.

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 opens with a specific verb and resource: 'Permanently delete a short link.' It then clarifies the concrete effects (redirect stops working, click history deleted), so the agent knows exactly what operation this is and can distinguish it from other delete_* 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?

It explicitly states when this tool should be preferred ('only when the link should disappear entirely'), implying it is not the right choice for temporary or reversible actions. It also gives a concrete prerequisite: call aidelly_list_short_links first to obtain the link id.

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