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

Annotations already declare readOnlyHint=true, idempotentHint=true, destructiveHint=false and openWorldHint=false, so the safety profile is clear. The description adds useful behavioral context: results are public, some values are only available 'where available', and no API key is required.

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 three front-loaded sentences with no wasted text. Purpose, supporting-resource guidance and the API-key caveat each earn their place.

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 tool with rich annotations and fully documented parameters, the description is largely complete and even lists the return signals despite there being no output schema. It offloads some detail to the catalogue, which is reasonable but keeps it from being fully self-contained.

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 both parameters are already documented by the schema. The description's phrase 'for a tool or bundle' loosely maps to the type parameter but adds no syntax or format detail beyond what the schema provides; baseline 3 is appropriate.

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 gives a specific verb and resource: reads current public test results for a tool or bundle. It enumerates the returned fields (badge, tested flag, pass rate, last-tested time), making the purpose clear, but it does not explicitly differentiate this from nearby sibling tools such as web3_assurance or search.

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 implies the tool is for checking test and availability signals and points to the catalogue for inputs, limitations and sources. It does not state when to use this instead of alternatives, nor does it give exclusions or prerequisites beyond 'No API key required'.

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