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

The annotations already flag destructiveHint=true, but the description adds that deletion is permanent, signaling irreversibility and a batch scope ('one or more'). It does not expose additional side effects such as cascading deletion of related data, but the permanent/destructive nature is clearly disclosed.

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?

Two sentences carry exactly the needed information: the action/scope in the first sentence and the alternative/condition in the second. No filler or redundancy.

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 simple one-parameter destructive tool, the description is complete: it names the operation, target, permanence, and the main alternative. The annotations cover safety, and the schema covers all parameters, so nothing needed for correct selection/invocation is missing.

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 coverage is 100%, with assignment_ids documented as 'Assignment ids to delete' and constrained as a non-empty array. The description's 'one or more assignments' restates the schema without adding format, source, or example details, so it meets the baseline but adds no new semantic value.

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 action ('Delete ... permanently') on a specific resource ('assignments'), and the word 'permanently' distinguishes this destructive delete from softer status changes. It also names the sibling alternative, update_assignment, so an agent can tell the tools apart.

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 says to prefer update_assignment (status refused) when the work should be redone, giving both an alternative and the precise condition for choosing it. This leaves no inference about when this tool is inappropriate.

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