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

Annotations already declare destructiveHint=true, openWorldHint=true and non-idempotent, so the safety profile is covered structurally. The description adds genuinely new context: a confirmation flow where 'confirm: true returns approve_url'. It omits what happens without confirmation, what approve_url is for, and how confirm_token is obtained.

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 dense sentence that front-loads the listing behavior before the restore action. Nothing is padding, though the parenthetical about approve_url is slightly buried at the end where it matters most.

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?

An output schema exists, so return values need not be explained. Given five parameters and a destructive, open-world mutation, the description covers the essential scenario and the confirmation mechanism; the remaining gaps (decline semantics, token sourcing) are real but secondary for a correct first call.

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%, so the description must carry the load. It explains 'confirm' and implies 'sites' (the chosen ones), but leaves 'decline', 'confirm_token' and 'workspace' entirely undocumented in both schema and text.

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 names both a list operation and a restore operation on 'sites that left a workspace', which is more specific than the title but conflates two behaviors into one tool. It never states which sibling to use instead (move_sites, transfer_site, get_site), so the boundary is only inferrable from the frozen-workspace scenario.

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 gives a triggering condition ('when it froze' / 'once it is paid again'), which implies when the tool applies. But it never says when not to use it, and it doesn't tell the agent to call it once to list versus again to restore.

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