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

With no annotations, the description carries the full burden and does disclose meaningful behavior: it returns a secret token, a one-time claim link, and a message to send the human owner. It does not state whether joining is irreversible, whether it fails if the nation is already taken, or whether the token can be regenerated — gaps for a creation tool.

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 sentences, tightly front-loaded with the core action followed by the return payload. 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?

For an onboarding tool with no output schema and fully documented parameters, the description covers the action and the return values an agent needs to proceed. It is only missing failure/idempotency context (e.g., what happens if the nation is already claimed).

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%, including the enum and length constraints, so the schema does all the work. The description adds no extra meaning about nation, general, doctrine, or style beyond what the schema already documents; 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 concrete verb and resource ("Take command of a country"), and the enumerated return values (secret token, claim link, message) make clear this is the enrollment entry point rather than a gameplay action. It never names a sibling, so differentiation from tools like my_nation or list_nations is inferred rather than stated.

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 token instruction ("pass it to every other tool") implies this must be called first, so ordering is implied. There is no explicit when-to-use/when-not-use statement and no mention of whether an agent can re-join or replace an existing nation.

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