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

With no annotations provided, the description carries the burden of behavioral disclosure. It does disclose the return categories and multi-network scope, and the 'returns' wording implies a read-only operation. Still, it omits details such as data freshness, network availability, failure behavior, or required authentication — meaningful context for an unannotated tool.

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 compact and efficient: a lead sentence stating the core value, a sentence listing outputs, and a practical sample-endpoint hint. The final 'Try GET /wallet-intelligence/sample' is slightly extraneous but not wasteful. Overall, it is well-structured and front-loaded with the most important information.

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?

The tool has 3 parameters, no annotations, and no output schema, so the description must provide most of the operational context. It only covers high-level capabilities. Missing pieces include how networks are specified (format/values), the role of amount_usdc, the exact return structure, and error/edge-case behavior. This is insufficient for an agent to invoke it reliably.

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% and the description does not compensate: it never explains the meaning of address, networks, or amount_usdc. An agent cannot infer from the text that networks is an optional array of chain names or that amount_usdc probably controls the x402 payment readiness check. This is a critical 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 uses a specific verb-resource construct: 'One call replaces wallet-balance and gas reads' and enumerates the concrete outputs (native and USDC balances, current blocks, fees, Base x402 payment readiness). It explicitly frames this tool as an aggregate alternative to wallet_balance and gas_price, making it distinguishable from its siblings 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?

The description clearly positions the tool as a replacement for separate wallet-balance and gas reads, implying 'use this when you need combined multi-chain wallet/gas data'. It also notes a cost benefit ('One signature instead of ten paid requests'). However, it does not state explicit exclusions, such as when to choose wallet_balance alone or when a specific network is unsupported.

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