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

Annotations already declare destructiveHint=true and idempotentHint=false, so safety is largely covered structurally. The description adds value by emphasizing permanence ('permanently destroy application data across environments'), but says nothing about auth requirements or the presence of an approval_id field, so the addition is modest.

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 short sentences, the destructive consequence front-loaded, with zero filler. Appropriately sized for the message it needs to convey.

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 9-parameter destructive mutation with no output schema, the description is thin: it omits parameter guidance, approval flow, and scope of impact beyond a general warning. Annotations cover the safety profile, but the rest of what an agent needs to call it correctly 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 description coverage is 0% and the tool takes 9 parameters (only 2 required), yet the description explains none of them. It gives no hint about which identifiers are needed, nor what the approval_id and beon_* parameters are for.

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 and resource ('Delete persistent storage'), and the name identifies it as a volume operation. However, it uses the loose phrase 'persistent storage' rather than naming the volume, and it does not distinguish itself from the sibling railway_delete_volume_backup, leaving a small ambiguity about exactly what gets deleted.

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?

There is no guidance on when to use this versus alternatives (delete_volume_backup, restore_volume_backup) or when not to. No prerequisites, no mention that a backup exists or should be taken first, and no context on which volume/environment is affected.

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