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

Annotations already declare readOnlyHint=true and openWorldHint=true, so the safety profile is covered by structured data. The description adds nothing beyond that — no indication that this fetches multiple books in one call, no batch-cap context, no freshness/streaming behavior for order book data.

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?

Four words is not conciseness but under-specification; the single sentence carries no payload. Nothing is wasted, but nothing useful is front-loaded either.

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?

An output schema exists so return values need not be described, and the input schema covers the sole parameter. However, for a batch order-book tool with a near-identical singular sibling, the description is too thin to let an agent select it correctly, and the batch semantics (multiple token books returned per call) are never stated.

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%, so the 'Required. Polymarket CLOB token ids. Maximum 25.' constraint is already fully documented in the schema. The description contributes no additional parameter semantics, which is the expected baseline when the schema does the heavy lifting.

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 is a noun phrase — 'Polymarket token order books' — that essentially restates the tool name rather than stating an action. It does identify the resource, but gives no verb and no distinction from the sibling polymarket_token_orderbook (singular), so an agent cannot tell the batch tool from the single-token tool without opening schemas.

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?

There is no when-to-use guidance whatsoever. The most consequential choice here — plural batch (up to 25 tokens) vs the singular polymarket_token_orderbook sibling — is left entirely unaddressed, as is any relationship to polymarket_tokens_prices/midpoints/spreads.

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