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

Annotations already declare readOnlyHint=true and openWorldHint=false, so the safety profile is clearly communicated. The description adds the 'current period' scoping, which is useful behavioral context, but it does not disclose return format, potential latency, or whether the count might be cached. Given the strong annotation coverage, this level is acceptable.

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, well-structured sentence that immediately conveys the purpose. It is front-loaded with the main action and contains no filler words or redundant 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 the tool's simplicity (no parameters, no output schema, read-only hint), the description is sufficient for an agent to select and invoke it correctly. It clearly communicates what the report returns (remaining count) and the relevant time period, making it complete for this use case.

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 are zero parameters, so the description carries no burden to explain parameters. The baseline for 0-parameter tools is 4, and the description accurately describes the output without needing to map parameter syntax or semantics.

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 a specific verb ('Report'), a specific resource ('verifications remaining'), and a temporal scope ('current period'). It effectively distinguishes itself from sibling tools like 'verify_claims' or 'top_up', which perform actions rather than provide status information.

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 when to use this tool (to check remaining quota before or during verification activities), but provides no explicit guidance on when not to use it or which alternatives might be more appropriate. It does not mention sibling tools or contrast with them, so usage context is only implied.

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