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

Annotations already declare readOnlyHint=true and openWorldHint=false, so safety is covered, and the description adds real behavior: newest-first ordering, the returned field set, and the before/has_more paging contract. It stops short of stating default result volume or empty-site behavior.

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 tight sentences with the resource and return shape front-loaded, then paging. Every clause carries information, though 'failing status' is terse enough to be slightly ambiguous.

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 does the necessary work of enumerating returned fields and ordering, and it covers the only non-obvious parameter interaction (has_more/before). Missing only site-identifier expectations for a 3-parameter read tool.

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 67%; limit and before are already documented in the schema, and the description's 'pass the started_at of the last row as before' largely restates the schema. The required site parameter remains undocumented in both places, with only 'of a site' as a hint.

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 resource (downtime incidents for a site) plus ordering, the fields returned, and the pagination model in one compact sentence. It is clearly distinguishable from data-analytics siblings like get_stats or get_events, though the verb itself is implicit.

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?

Explains how to page but never says when to choose this over get_site_health or get_events, nor whether a time range or site-identifier format is required. The only usage instruction is the pagination rule.

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