get_address_from_ens

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

Annotations only include openWorldHint and do not declare readOnlyHint or destructiveHint. The description does not explicitly state that this is a read-only operation or mention any side effects, error conditions, or network dependencies, leaving the safety profile unclear.

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, direct sentence with a useful parenthetical example. It is front-loaded with the action and contains no redundant or filler text.

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 no output schema, and the description does not describe the return value format or behavior for unregistered ENS names. It also ignores the chainId parameter and fails to clarify how this tool differs from similar sibling tools, leaving gaps in context.

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 100% for both parameters (chainId and ensName), so the schema carries the semantic load. The description adds only an example ENS name ('goat.eth') but does not provide additional meaning 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?

The description clearly states the action ('Get the address') and resource ('ENS name') with a concrete example ('goat.eth'). However, sibling tools like evm_resolve_ens_name and evm_lookup_ens_address likely serve the same purpose, and the description does not differentiate between them.

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 guidance is provided on when to use this tool versus alternatives such as evm_resolve_ens_name or evm_lookup_ens_address. The description simply restates the function without contextual cues or exclusions.

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