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

With no annotations present, the description carries the full burden, and it does disclose genuinely useful behavioral facts: the $0.25 cost (a paid call), the three-chain scope in one invocation, and that unlimited approvals are flagged. It still omits whether the call is read-only, latency/rate-limit expectations, and data freshness, so it is not fully self-sufficient.

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?

A single dense sentence that front-loads the scope ('Premium one-call wallet report across...') and then lists payoff contents, with the cost appended last. Every clause carries information; nothing is padding.

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?

No output schema exists, so the description must convey what comes back, and the enumerated sections (balances, approvals, address type, risk summary) do that reasonably well. Missing a statement about read-only safety and about how the three chains are returned in aggregate keeps it short of full completeness.

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% for the single `address` parameter, and the description never mentions it at all. The parameter is self-evident from the tool's purpose and the schema's 0x+40-hex pattern, but the description adds no explicit meaning (e.g. which chains an address applies to) beyond the schema.

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 resource ('wallet report') and enumerates its actual contents (balances, token approvals, address type/EIP-7702 delegation, risk summary), which is far more informative than the name alone. The 'across Base, Ethereum and BNB Smart Chain' / 'one-call' framing implicitly separates it from the per-chain siblings like base_token_approvals or ethereum_address_inspect, but no sibling is named directly.

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?

'One-call' and the cost line imply this is the tool to reach for when a single consolidated multi-chain view is wanted rather than several single-chain calls. However, it never states when NOT to use it or names the obvious alternative (wallet_portfolio), so the routing decision is left to inference.

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