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

Annotations already cover the safety profile (readOnly, idempotent, non-destructive), and the description adds substantial extra behavior: sort order, lead-group A-Z placement, the meaning of tieRange (scores within 4 points), and an injection-handling rule for quoted text. That is real context beyond the structured fields.

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?

Purpose and ordering are front-loaded in the first clause, and the remaining clauses carry return-field detail that is necessary because no output schema exists. The field enumeration is dense but each item earns its place; the safety note on quoted text is slightly tacked on at the end.

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?

With no output schema, the description carries the full burden of describing the return shape, and it does so field by field (score, band, rank, lead-group flag, rank range, confidence label, tieRange, counts). It also warns about untrusted quoted content, leaving no obvious gap for a zero-parameter read tool.

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?

There are zero parameters, so the baseline is 4; nothing in the schema needs explanation. The description goes further by enumerating the returned fields, which substitutes for the absent output 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?

States a concrete verb and resource ('List all 198 countries and territories in the Health Record Rights Index') plus the ordering rule, which immediately separates it from the singular get_country sibling. The scope ('all 198') makes the contrast with per-country lookup unmistakable without needing to name the sibling.

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?

Gives clear operational guidance for the lead group ('name them together and never call one of them first or best') and for handling [quoted] text, which tells the agent how to use the result correctly. It does not, however, explicitly state when to prefer this over get_country or compare_states.

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