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

Annotations already declare readOnlyHint=true and openWorldHint=true, covering the safety profile. The description adds that the data spans 'wired exchanges' and names specific order-book metrics, which is useful context. It does not disclose return format, refresh behavior, or rate limits, but with annotations covering the core behavioral traits, a 3 is appropriate.

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?

The description is a single, front-loaded sentence that efficiently lists the returned content. Every phrase earns its place, and there is no redundant or filler text.

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 read-only, single-parameter market data tool with no output schema, the description gives a good high-level summary of what the response contains: depth, walls, and imbalance across exchanges. It could do more to specify the coin identifier format or whether the data is live versus snapshot, but it is largely complete for an agent to invoke the tool correctly.

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%, so the description must compensate for the single 'coin' parameter. It only says 'for a coin' without clarifying format (ticker, symbol, contract address) or whether it must match a specific exchange convention. That is barely more than the parameter name itself, so it does not adequately cover the gap.

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 clearly states the resource: resting bids and asks for a coin, plus specific metrics (depth near price, biggest walls, buy/sell imbalance). It is not a tautology and gives an agent a precise sense of what the tool returns. However, it does not explicitly differentiate itself from sibling tools like get_liquidity_heatmap or get_market_radar, so a 4 is appropriate.

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 explicit guidance on when to use this tool versus alternatives such as get_liquidity_heatmap or search_markets. The description only implies usage through the content it returns, leaving the agent to infer the right context. No exclusions or prerequisites are stated.

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