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

With empty annotations, the description carries the full burden. 'Read' signals a non-mutating operation, and the listed output fields (decimals, symbol, atomic amount, formatted amount) disclose what the call returns. It does not discuss failure modes or address validation, but for a simple read this is adequate.

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?

Single sentence, front-loaded with the action and resource, then compactly lists return fields. No redundant words.

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 two-parameter read tool, the description covers the operation, chain, and return fields. However, it omits explicit parameter semantics and any error/edge-case behavior, so it is adequate but has clear gaps.

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 explain the two required parameters 'token' and 'owner'. It only implies an ERC-20 balance without mapping token/owner to their roles, so the agent must rely on the parameter names and regex patterns alone.

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 the specific verb 'Read' with the resource 'ERC-20 balance on Base' and enumerates the returned fields (decimals, symbol, atomic amount, formatted amount). This clearly distinguishes it from sibling tools like base_native_balance and base_erc20_allowance.

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?

No explicit when-to-use or alternative routing is provided. The term 'ERC-20' implies use for token balances rather than native Base balance, but the description never states when to prefer this over base_native_balance or base_erc20_allowance.

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