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

No annotations are provided, so the description carries the full behavioral burden. It usefully discloses the $0.005 cost and the extra text records returned, but says nothing about read-only nature, required network/chain, rate limits, or error behavior when a name is unregistered.

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?

Two compact sentences, front-loaded with the primary action and followed by the cost. Every clause carries information; nothing is redundant with the tool name.

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 annotations, the description does a fair job covering both input modes and summarizing the return payload (address, text records, or primary name). It stops short of describing the response structure or not-found behavior an agent might need to handle results.

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. It does so by naming the accepted input forms (ENS name, Basename, or address) that the regex pattern encodes only structurally, clarifying that both forward and reverse inputs are valid for the single 'name' parameter.

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 precise verb (resolve/reverse-resolve) and resource (ENS name, Basename, address) with the exact transformation performed in each direction. This is clearly distinguishable from sibling address-inspection tools, which take an address and inspect chain state rather than mapping names to addresses.

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 implicitly tells the agent when each mode applies (name in → forward resolution, address in → primary name), but gives no explicit guidance about when to prefer this over siblings like ethereum_address_inspect, nor any exclusions or failure conditions.

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