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 substantive context beyond that: it lists what is actually probed and clarifies that unsafe methods are never invoked, with exposure inferred from the route listing rather than by exercising them — a meaningful disclosure about how results are derived.

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 dense sentences, no filler. The purpose and scope are front-loaded, and the safety caveat about never calling unsafe methods follows immediately where it matters.

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 one-parameter audit tool with full schema coverage and annotations carrying the safety profile, the description covers what will be examined. Since there is no output schema, a brief hint at the report shape would have closed the last gap, but nothing needed to invoke the tool correctly 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?

Schema description coverage is 100% and the single 'url' parameter is already documented with an example format in the schema. The description adds only the qualifier that the endpoint should be public, which is context rather than new parameter syntax. Baseline 3 applies.

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 ('Read-only audit of a public CometBFT (Cosmos SDK) RPC endpoint') and enumerates the exact checks: node status, health, peers, and unsafe admin method exposure. No sibling tool overlaps with this domain, so it is unambiguous within the toolset.

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 makes clear the context in which this applies (auditing a public CometBFT RPC endpoint) and even the safety constraint under which it operates. It does not name when to prefer an alternative or when not to use it, but no sibling provides comparable coverage, so the omission is minor.

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