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

Annotations already declare readOnlyHint=true, destructiveHint=false, openWorldHint=false, so the safety profile is covered. The description adds the useful detail that changes come back with their measured effect, but says nothing about time range, pagination, or ordering.

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 well-formed sentence with the resource and the payoff ('measured effect') front-loaded and no wasted words. It is concise, though concision here borders on under-specification.

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 and 0% parameter coverage, the description leaves too much unsaid: what a 'change' record contains, the time window covered, and how the two required identifiers behave. For a two-required-param list tool, more context was needed.

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 carries the burden of explaining siteId and projectId — yet it mentions neither. The names are largely self-explanatory, but nothing explains why both are required or how they scope the result.

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 ('List') and resource ('on-page changes logged for a website') plus the added dimension of 'measured effect'. This is clearly distinguishable from get_seo_health or list_seo_diagnoses, though the description never explicitly names the boundary with those siblings.

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 the many adjacent SEO tools (list_seo_diagnoses, get_seo_diagnosis, get_seo_health). No prerequisites, no exclusions, no mention that a project/site must be resolved first.

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