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

Annotations only declare readOnlyHint=true, and the description adds real behavioral context beyond that: the quote is 'floating', the network fee is deducted from the payout, and the final amount is fixed only once the deposit confirms. It does not state quote expiry or time-to-live, which keeps it from a 5.

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 tight sentences with no filler, and the core definition is front-loaded. The field list is slightly cryptic (amountTo vs receiveAmount are not disambiguated), but nothing is redundant.

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?

With no output schema, the description usefully enumerates the return fields and flags the quote as non-final. However, for a tool requiring three identifiers it leaves the meaning of `from`/`to` unexplained and gives no sense of how long a quote remains valid.

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 only 33% — just `amount` is documented as a decimal string. The description never explains whether `from` and `to` are asset symbols, chains, or addresses, and it instead spends its words on output fields, so it fails to compensate for the coverage gap on two required parameters.

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 names the resource (a floating quote for a route and amount) and enumerates the returned values (amountTo, networkFee, receiveAmount, rate), so the agent can tell this is a pricing/estimate call rather than a state-changing swap. It stops short of contrasting itself with siblings like get_limits or list_routes, so differentiation must be inferred.

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 when-to-use guidance, no mention of calling this before create_swap, and no alternatives or exclusions named. The implication that this is a pre-swap preview comes only from the word 'estimate' and the note about deposit confirmation.

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