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

Annotations already declare readOnlyHint, idempotentHint, openWorldHint and destructiveHint=false, so the safety profile is covered. The description adds genuinely new context: it reports the *service's* upstream nodes rather than the caller's own connectivity, which prevents a plausible misuse. It does not discuss caching, freshness, or how health is determined, keeping it short of a 5.

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 what, then labeled When to use / Prefer another tool sections, closing with a call example. Every sentence carries distinct information and the structure is immediately scannable.

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 health endpoint with an output schema already describing the return shape, nothing an agent needs in order to decide to call it is missing.

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 the baseline is 4. The description correctly shows the empty-argument invocation (get_network_health {}), which adds nothing beyond the schema but also introduces no confusion.

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 and scope: overall and per-node health of the upstream XRPL nodes. The subject is unambiguous and, since the siblings (get_fee, get_orderbook, get_latest_ledger, etc.) are all data-fetch tools, no further differentiation is needed.

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 gives when-to-use ('to decide whether to trust or retry data, or to explain a 503 from another endpoint') and a when-not clause ('not a probe of your own connectivity; it reports the service's upstream nodes'). This is the strongest form of routing guidance.

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