overview

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

The annotations already declare readOnlyHint=true, so safety is covered. The description adds the '[READ]' tag and the 'one-shot' behavioral note (single call returns a fleet summary), but it says nothing about cost, pagination, or data freshness — it is adequate rather than rich.

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-loaded with the operation and a bracketed mode tag, then scope, then usage, then args. No sentence is redundant and there is no filler.

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?

Given one optional param, no output schema, and only a readOnly annotation, the description supplies purpose, triage role, and parameter meaning — enough to invoke correctly. Missing only minor details like whether output is paginated or refreshable.

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?

Single optional parameter with 0% schema description coverage, so the description must explain 'target'. It does: 'Endpoint-management target name from config; omit for the default', covering meaning and default behavior. It does not clarify accepted target formats, but the core semantics are conveyed.

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 and resource: 'One-shot fleet health: online/offline, stale endpoints, version spread.' It names exactly the aspects reported, so the agent knows the scope is an aggregate fleet snapshot rather than a per-endpoint call.

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?

Explicitly says 'Call this first to triage a managed-endpoint fleet before drilling into a specific endpoint, login storm, or drift report' — which names the alternatives (endpoint_get, login_storm_analysis, drift_report) and the sequencing rule. That is precisely the when/when-not guidance an agent needs.

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