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

With no annotations provided, the description carries the full burden of behavioral disclosure. It does not mention whether the tool is read-only, what output format to expect, any side effects, or authentication requirements. The word 'explain' implies a non-mutating action, but no explicit behavioral traits are disclosed.

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 sentence, front-loaded with the verb 'Explain,' and contains no redundant information. Every word contributes to the purpose stated.

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?

The tool is simple with no parameters, but the description lacks key details: it does not explain what constitutes 'explicit operator authority,' what the output looks like, or whether this tool returns a formatted report. Since there is no output schema, the description should have mentioned return value or behavior, making it only partially complete.

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?

The tool has zero parameters, so the baseline is 4. The description adds no parameter meaning, but none is needed. The empty schema fully covers the input space, so there is no gap to compensate.

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 uses a specific verb 'Explain' and names the exact resource: 'explicit operator authority and the absence of financial permissions.' It clearly distinguishes from sibling tools like explain_registration, which covers registration rather than permission specifics.

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 offers no guidance on when to use this tool versus alternatives. It only states what the tool does, with no mention of context, prerequisites, or exclusions. There is no 'use this when...' or 'instead of...' language.

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