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

Annotations already declare destructive=true, idempotent=true, readOnly=false and closed-world, so the safety profile is carried by structured data. The description adds that the orders payload must match the wait_for_turn schema and enumerates its keys, but does not state that submitting commits/ends the turn, nor what happens on rejection.

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, no filler, with the payload constraint placed immediately after the action so the agent sees the contract up front. "Play your turn" is slightly wasted space but functions as a compact framing of intent.

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 nested-object mutation with no output schema and zero schema coverage, the description recovers the most important gap by naming the payload fields. It is still incomplete on auth/token handling, on the semantics of turnId, and on success/failure behavior, which matters for a destructive commit operation.

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 coverage is 0%, and orders is an untyped object with additionalProperties: {}, so the description's list of seven keys (thoughts, messages, treaties, place, attacks, fortify, notes) is the only real documentation of the payload and is therefore valuable. It still leaves token and turnId completely unexplained and gives no value formats for place/attacks/fortify.

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?

"Play your turn" is framing rather than a specific verb+resource statement; the actual action (submitting orders for a turn) is only inferred from the tool name and the field list. It does not distinguish itself from siblings like give_orders or validate_orders, which an agent could easily confuse with it.

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 reference to "the schema from wait_for_turn" implies the correct call sequence (wait_for_turn first, then submit), which is genuinely useful sequencing information. However, it never says whether validate_orders should be run beforehand, nor what happens if you call it without a fresh turn, leaving key when/when-not guidance implicit.

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