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

The description adds no unique behavioral traits beyond the basic function. The relevant safety information (read-only nature) is already explicitly covered by the 'readOnlyHint: true' annotation. Therefore, the description contributes minimally to behavioral transparency.

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 definition is highly efficient, consisting of a single, focused sentence that immediately conveys the tool's purpose with zero unnecessary language.

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 that this is a simple read-only lookup, the combination of the description and annotations provides sufficient information for an agent to call the tool correctly. It is missing context on expected return format, but this is a minor gap for a non-complex operation.

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%, meaning the schema thoroughly defines the `address` parameter. The description merely confirms the relationship ('associated with an address'), which adds no semantic meaning beyond what the detailed input schema already provides. Baseline score applies.

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 function (Returns THORNames) and the resource/input required (associated with an address). This reverse lookup function is clearly differentiated from other potential lookup tools like get_thorname or lookup_thorname listed among siblings.

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 name and description provide clear context for when this tool should be used—when an address is known and the corresponding THORName(s) are needed. While it doesn't explicitly state 'use this vs X,' the functional distinction is robust enough.

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