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

Annotations already declare readOnlyHint=true and openWorldHint=false, so the safety profile is covered. The description adds genuine domain context with 'pending interpretation, not necessarily a breaking change,' which steers interpretation of results, but it says nothing about time-window defaults, pagination, or result volume.

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 compact sentences, with the resource and scope front-loaded and the semantic caveat second. Nothing is wasted, though 'recently' is left vague when a concrete default window is available to state.

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 two-parameter read-only tool with no output schema and no nested objects, the description covers scope, filtering intent, and the nature of the returned data. It is close to complete, with only the trigger to use it over get_history left implicit.

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 both parameters (id, days) are already documented in the schema; baseline 3 applies. The description's 'or for one' loosely reinforces the id filter but adds no format or semantics beyond what the schema supplies, and never mentions the days window.

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 clear resource (recently detected changes) and its scope (monitored documentation and API schemas across all reviewed services or one), plus a definition of what a 'detected change' means. It does not name or contrast with any sibling such as get_history, so the agent must infer the boundary between current changes and historical ones.

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 phrase 'across all reviewed services or for one' implies the optional id filter, and 'pending interpretation' hints at the state of results. However, there is no explicit when-to-use guidance, no exclusion vs get_history/get_report, and no stated prerequisite for interpreting the results.

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