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

With no annotations, the description carries the burden of behavioral disclosure. It does describe what data the call returns (status, heartbeat, capsule preview), which is useful, but it does not explicitly state that this is a read-only, non-mutating operation or mention any authentication/scope caveats beyond the cryptic 'Gateway key' phrase.

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 description is compact and front-loads the main idea after a jargon-heavy prefix. 'Agent Flight Recorder (Gateway key)' is somewhat cryptic and adds little for an agent, but the rest of the sentence is efficient and information-dense.

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 status endpoint with no output schema, the description covers the essential information an agent needs to call it and interpret the result. It could be more complete by explicitly saying it is a read-only health check, but the simplicity of the tool makes the absence a minor gap.

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 and the schema already reflects that, so the baseline for this dimension is 4. The description adds value by explaining what the response includes, which is all the parameter-level context an agent needs for an empty schema.

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?

The description clearly defines the tool's output scope: a fleet-wide status view covering every monitor the caller owns, with alive/late/dead states, last heartbeat, and capsule preview. It lacks an explicit verb like 'list' or 'return', but the resource and scope are unmistakable and it is distinct from sibling tools like heartbeat or fetch_capsule.

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 description implies the tool is the place to go for an overall monitor health check, and the sibling names hint at alternatives. However, it never explicitly says 'use this when you need a fleet overview' or contrasts it with the other tools, so the guidance is only implicit.

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