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

Annotations declare readOnlyHint=true and openWorldHint=false, and the description reinforces this with 'on a copy of the live board' and 'nothing changes in the real war', so there is no contradiction. It goes further than the annotations by disclosing the output nature (which orders would be rejected, roughly what would happen) and by hedging that results are approximate ('roughly'), which sets expectations about fidelity.

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 with the simulation scope front-loaded and the safety reassurance second. No padding, no restatement of the tool name, and each sentence carries distinct information.

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?

There is no output schema, and the description gives only a high-level sketch of the response (rejections plus approximate effects), which is reasonable but thin. The bigger gap is the completely undocumented structure of the required 'orders' object, which is central to a validation tool and left unexplained in both schema and description.

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?

With only 33% schema description coverage over three parameters, the description needs to compensate but adds nothing about any of them. The 'orders' object is an opaque bag with additionalProperties and no explanation of its expected shape, and token vs. nation auth is left entirely to the schema text.

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 specific verb and resource: it plays orders on a copy of the live board and reports rejections plus approximate outcomes. The 'copy of the live board' and 'nothing changes in the real war' phrasing implicitly separates it from submit_orders and give_orders, though it never names those siblings.

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 dry-run framing implies this is meant as a pre-flight check before actually submitting orders, but the description never says so explicitly, nor does it name submit_orders as the follow-up or state any condition under which validation is unnecessary. Usage is inferable rather than instructed.

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