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

With no annotations, the description carries the full behavioral burden and mostly fails it. It implies a state transition (a war begins) but says nothing about side effects, whether an existing war is affected, whether the action is reversible, what authorization the token confers, or what happens on failure.

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 short sentence with no filler, and the scoping constraint is placed right after the action. It is efficient, though arguably terse to the point of under-specification rather than optimal brevity.

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 a state-mutating action tool with no annotations, no output schema, and an undocumented required parameter, the description is far too thin. It does not tell the agent what 'starting a war' entails, what it needs besides a token, or what result to expect.

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 description never mentions the single required 'token' parameter. The name suggests an auth credential, but nothing in the description or schema confirms this, so the agent gets no added meaning over the bare property name.

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 gives a verb ('Start') and a resource ('the war') plus a scoping clause ('in the room you opened'), which separates it from join_war and leave_war at a high level. However, 'war' is undefined domain jargon, and the description never says what starting a war actually creates or changes, leaving the purpose only loosely graspable.

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?

'In the room you opened' implies a prerequisite (a room must exist first), which is a hint of when-to-use. But there is no explicit statement of when this is appropriate versus join_war, no exclusions, and no mention of required permissions or preconditions beyond the vague room reference.

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