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

The description adds meaningful detail about what is checked (funding, gas, chain intent, destination type, hazards) beyond the readOnly and destructive annotations. However, it does not disclose output format, error behavior, or whether results are merely advisory, so behavioral transparency remains partial.

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 focused sentence, front-loaded with the verb and resource, and every listed item adds meaning. There is no repetition or unnecessary prose.

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 and no return-value description, the tool's actual result is left unspecified, which is critical for a preflight/decision-support tool. The optional parameters also lack usage guidance, so an agent knows roughly what the tool does but not exactly what to send or what the response means.

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 parameter-level detail. It only vaguely maps to the fields (funding/gas ≈ mintGasReserveEtth and plannedSpendUsdc, chain intent ≈ expectedChainId), but it never explains string formats, units, decimal precision, or the relationship between 'address' and 'destinationAddress'.

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 ('Check') and a clear resource: Base ETH/USDC funding, gas, chain intent, destination type, and payment hazards. It clearly conveys what the tool does, though it does not explicitly distinguish itself from the sibling tools.

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?

Provides useful timing context with 'before signing', which tells an agent when to invoke this preflight check. It does not list exclusions or name alternative tools, but the sibling names are distinct enough that the intended use case is reasonably clear.

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