validate_kroger

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

With no annotations provided, the description carries the burden of disclosing behavioral traits. It does add one meaningful safety guarantee ('without exposing secrets'), but it does not disclose whether the operation is read-only, performs network calls, or has any side effects. This is a modest but incomplete disclosure.

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, concise sentence that is front-loaded with the action and resource. Every word adds value, and there is no fluff 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?

For a tool with no parameters and a simple validation purpose, the description is nearly complete. The presence of an output schema covers return-value details, so the description's lack of output explanation is acceptable. However, it could be slightly richer in explaining how this fits into the broader Kroger auth workflow.

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 input schema has zero parameters, and the baseline for zero-parameter tools is 4. The description correctly avoids inventing parameter details and does not contradict the schema, so the score remains at the baseline.

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 action ('Validate') and resource ('local Kroger credentials'), with an additional qualifier ('without exposing secrets') that distinguishes it from sibling auth tools. This is a precise, non-tautological statement.

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 used to validate Kroger credentials, but it does not explicitly state when to use it versus the sibling auth-flow tools (e.g., start_kroger_cart_auth, kroger_cart_auth_status). There is no mention of alternatives or when-not-to-use, leaving the usage context implied.

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