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

With no annotations provided, the description carries the behavioral burden. It implies a static, descriptive metadata read (counts, schemes, citation format) but never explicitly states that it is read-only, has no side effects, or returns a fixed snapshot rather than live data.

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 core content is front-loaded in a single sentence, but that sentence is an overstuffed list and contains a duplicated word ("register register"), which undermines polish. The trailing "Call this first" is short and earns its place.

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?

There is no output schema, so the description must convey what comes back, and it does: field inventory, entity counts, geographic/service coverage, identifier schemes, and citation guidance. That is sufficient for an agent to know why and when to invoke it.

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 of 4 applies; there is nothing for the description to disambiguate. The listed output content (fields, counts, regions, schemes) actually exceeds what the empty schema conveys.

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 names the resource (the DamageRestore HQ register) and enumerates what it exposes: fields, entity counts, regions, services, identifier schemes, and citation info. That is specific and distinguishable from a data-returning sibling, though it never names an alternative tool to contrast itself against.

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?

"Call this first" gives explicit ordering guidance that an agent can act on immediately, which is a genuine usage directive rather than implied context. It stops short of stating when not to call it or which sibling supersedes it once orientation is done.

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