reverse_resolve_domain

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

No annotations are provided, so the description carries full burden. It mentions what the tool does but doesn't disclose behavioral traits like whether it requires network access, potential rate limits, error conditions (e.g., if no ENS domain exists), or what format the result returns. For a tool with no annotation coverage, this is a significant gap.

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, efficient sentence that states the core purpose without any wasted words. It's appropriately sized for a single-parameter tool and front-loads the essential 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?

Given no annotations and no output schema, the description is incomplete for a tool that performs a network operation. It doesn't explain what happens when resolution fails, what format the result returns, or any prerequisites. For a blockchain query tool with zero structured coverage, this should provide more 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%, so the schema already documents the single 'address' parameter. The description doesn't add any additional parameter semantics beyond what's in the schema (e.g., address format requirements, validation rules). Baseline 3 is appropriate when schema does the heavy lifting.

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 specific action ('reverse resolve') and target resource ('Ethereum address to its ENS domain name'), distinguishing it from sibling tools like 'resolve_domain' which likely performs forward resolution. It uses precise terminology that indicates the direction of resolution.

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 suggests usage when you have an Ethereum address and want its associated ENS domain, but it doesn't explicitly state when NOT to use it or name alternatives. The presence of 'resolve_domain' as a sibling tool provides some context, but no explicit guidance is given about choosing between them.

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