dcs_alert_stats

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

Annotations already declare readOnlyHint=true, and the "[READ]" prefix merely restates that, adding no behavioral context. The description does not say what the totals aggregate, what time window (if any) applies, or what shape the response takes - and with no output schema, nothing else covers that gap.

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?

The single sentence is front-loaded and free of waste, which is structurally sound. But the brevity comes at the cost of specification rather than being genuinely economical - the same length could have named the aggregation or the alternative tool.

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 zero-parameter, read-only stats tool the bar is low, and the read-only annotation plus the empty schema mean an agent can call it safely. Still, with no output schema and no statement of what "totals" contains, the agent cannot predict what it will receive or whether it wants this data.

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?

The tool takes zero parameters, so there is no parameter semantics to explain and the baseline of 4 applies. The description correctly adds no redundant parameter prose.

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?

"[READ] Read alert rule totals" names a verb (read) and a resource (alert rule totals), so the general intent is inferable. However, "totals" is ambiguous - it could mean the number of rules, per-severity counts, or aggregated firing statistics - and nothing distinguishes it from the adjacent dcs_alert_rules, dcs_alert_details, or the parallel dcs_*_stats tools.

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 when-to-use guidance at all: no statement of when to call this instead of dcs_alert_rules (raw rules) or dcs_alerts (alert instances). The sibling tool list shows several plausible alternatives, and the description gives the agent nothing to choose between them.

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