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

Annotations already declare destructiveHint=false, idempotentHint=true, openWorldHint=false, and readOnlyHint=false. The description adds the important cost-related detail that no credit is spent, but it does not explain what validation actually does or why the operation is not read-only.

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 front-loaded sentence with no wasted words. It communicates the core action and cost constraint immediately.

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 input schema is large and complex, with many nested contract fields and no output schema. Given that complexity and 0% schema description coverage, the one-sentence description is too sparse to tell an agent what the validation checks or what to expect back.

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 0%, and the description does not explain the upload_id or the nested contract structure. It only indirectly references the feature-repair matrix, leaving the two required parameters and their many nested fields undocumented in prose.

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 states a clear verb and resource: validate a tenant-private feature-repair matrix. It also adds a useful qualifier, 'without spending a credit,' but does not explicitly distinguish this tool from siblings such as quote_repair or upload_repair_matrix.

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 'preflight' framing and 'without spending a credit' imply this is a low-cost validation step before a paid repair operation. However, the description does not explicitly state when to use it versus quote_repair, upload_repair_matrix, or other repair-related tools.

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