demographics

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

No annotations are provided, so the description carries the full burden. It does disclose a meaningful behavioral trait beyond the schema: best/worst identities are masked when unmet, which tells the agent some fields may be withheld. However, it says nothing about read-only status, cost, caching, or update timing.

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?

A single front-loaded sentence naming the tool and its contents, followed by one short caveat sentence. The metric list is dense but every item earns its place by telling the agent exactly which stats come back.

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 parameters, no annotations, and no output schema, the description is the sole source of information, and it adequately covers what is returned plus the masking caveat. It could be stronger if it noted the read-only nature or how rankings are scoped (own civ vs. all known civs).

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 there is nothing for the description to clarify and the baseline is 4. Schema coverage is 100% and the empty object is unambiguous.

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 states a specific resource (demographics) and enumerates the exact metrics reported: population, food, production, gold, land, soldiers, approval, literacy, each with value/rank plus public best/average/worst. That is far more specific than a tautology, though it does not explicitly distinguish itself from sibling overview/status tools like 'overview' or 'turn_status'.

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?

There is no when-to-use or when-not-to-use guidance, and no sibling is named as an alternative. An agent must infer from the name alone that this is the read-only rankings/report tool rather than 'overview' or 'players'.

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