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

Annotations already cover the safety profile (readOnlyHint=true, destructiveHint=false), so the bar is lower. The description adds real context beyond that: it explains that include_environments changes the returned field set and that the env ids are reusable as inputs elsewhere. It omits pagination/rate-limit behavior, but that is a minor gap given annotation coverage.

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?

Front-loads the resource and returned fields, then qualifies behavior with the flag, and closes with the HTTP route. No sentence is wasted and the scoping caveat arrives before the reader needs it.

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?

With no output schema, the description compensates by enumerating the return fields, and the single optional parameter is fully explained. An agent has everything needed to call it and reuse the environment ids afterward.

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%, so baseline is 3, but the description goes further than the schema's terse 'Include each site's environments' by spelling out exactly which extra fields appear (live/staging env ids, primary domain, PHP version, WordPress version, SSH host/port) when the flag is set. That is genuine added meaning over the structured field.

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+resource ('List the company's WordPress sites') and even enumerates the returned fields (id, name, display name, status, labels). It does not explicitly contrast itself with the singleton kinsta_get_site or kinsta_list_site_environments, so sibling differentiation is only implied.

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?

Adds a useful routing hint — 'use those environment ids for the other tools' — which points the agent at downstream operations. However, it never states when to pick this over kinsta_get_site or kinsta_list_site_environments, so the guidance is implied rather than explicit.

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