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

Annotations already declare the safety profile (mutation, destructive, idempotent, open-world), so the bar is lower. The description adds the useful scope of what can be changed, but does not clarify partial-update semantics versus overwriting omitted fields—important given destructiveHint=true for what sounds like display-only settings—nor does it mention permission requirements.

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 sentence that front-loads the action and then the three aspects changeable. No wasted words, though it could be tightened slightly for front-loading the resource identifier constraint.

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?

Without an output schema the description needn't explain returns, and required ids are covered by the schema. However, for a destructive, idempotent mutation it omits what happens to fields not supplied and whether edits are reversible—gaps that matter for correct invocation.

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 100%, so all five parameters, including the meaning of an empty displayName, are already documented. The description only echoes that name/metrics/position are the mutable fields, adding no syntax or format detail beyond the schema. Baseline 3 is appropriate when the schema does the heavy lifting.

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 verb and resource ("change how one server shows on a status page") and enumerates the three mutable aspects: name, metric visibility, position. It is clearly differentiable from siblings like vs_status_page_servers_add, _remove, and vs_status_page_monitors_update. It stops short of explicitly naming those alternatives, so it isn't a 5.

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?

The framing ("change how one server shows") implies this is for editing an already-added server, with add/remove as the natural alternatives. But no explicit when-to-use/when-not or preconditions (the server must already be on the page) are stated, leaving the agent to infer the alternative selection.

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