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

Annotations already declare readOnlyHint, destructiveHint=false, and openWorldHint=false. The description adds non-obvious behavioral context: a null creation result should not be treated as proof that no creator exists while the genesis backfill floor is above zero.

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: the first front-loads the returned fields, and the second adds an important caveat. There is little wasted text, though the first sentence is a noun phrase rather than an explicit verb statement.

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 simple read-only lookup with one parameter, the description covers returned fields and a key null-result caveat. However, it omits address format guidance and sibling-tool selection guidance, which are meaningful gaps for correct invocation.

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?

There is one required parameter, 'address', with 0% schema description coverage. The description does not clarify the expected address format or confirm whether it must be a Wanchain contract address, leaving the parameter under-specified.

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 states the specific record returned for a Wanchain contract: creator address, creation transaction, block, and timestamp. It is clear what resource is involved, but it does not explicitly differentiate this from sibling contract-oriented tools such as get_verified_contract.

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?

There is no explicit guidance on when to use this tool versus alternatives, nor any prerequisites. The caveat about null creation is useful interpretation guidance, but it does not tell an agent when this tool is the right choice.

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