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

No annotations are provided, so the description carries full responsibility. It states 'Auth required' but does not disclose whether the action is reversible, what happens to the rule, or what 'unused authorizations' implies. The destructive nature is only implicit from 'remove'.

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 that conveys the purpose and the auth requirement with no unnecessary words. It is front-loaded and perfectly concise.

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 tool with no parameters and no output schema, the description covers the core action and the auth note. However, it could be more complete by stating the context of use (e.g., to disable auto-topup) or any side effects. It is adequate but leaves some room for additional context.

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-related information because none is needed. It does not need to compensate for any schema coverage gaps since there are no parameters.

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 action (remove) and the resource (auto-topup rule), and mentions 'unused authorizations' which adds specificity. It distinguishes itself from sibling tools like get_auto_topup and set_auto_topup by indicating a removal operation.

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 mentions 'Auth required' but does not provide explicit guidance on when to use this tool versus alternatives, such as when to disable an auto-topup rule or with which other tools it might interact. The context is implied but not explicitly stated.

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