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

With no annotations, the description carries the full burden, and it does disclose the polling cadence and the personalized ("as you see it") scope. It omits authentication needs despite the token parameter, error/retry behavior, and any statement that calling has no side effects.

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 short sentences, front-loaded with what the caller receives and closing with the polling cadence. Every clause earns its place with no filler.

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 and no annotations, the field enumeration (nation, neighbours, leaders, pact offers, news) usefully stands in for a return-value spec, and the cadence guidance covers the operational side. The only real gap is the undocumented token parameter.

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 0% and the sole parameter, token, is never mentioned in the description. The agent gets no hint that token is the auth credential or what form it takes, so the description does not compensate for the schema gap.

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 enumerates exactly what the tool returns from the caller's perspective: nation, neighbours, leaders, pact offers and news, so an agent knows this is the state-observation read. It is distinguishable from siblings like send_orders, join_war and start_war, though it does not name any of them.

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 every 10 to 20 seconds" is genuine operational guidance on polling cadence, which is more than most definitions offer. However, it says nothing about when to prefer this over siblings or what prerequisites exist, so usage is only implied.

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