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

Annotations already declare readOnlyHint=true and destructiveHint=false, so the safety profile is clear. The description adds context about the review content (project info, pricing, etc.) but does not disclose additional behavioral traits such as authentication requirements, rate limits, or data freshness. This is sufficient but not exceptionally rich beyond the structured annotations.

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 brief and front-loaded with the primary usage directive. The second sentence details the return content, and the third notes the optional filter. There is no redundant information or filler, and each sentence contributes valuably.

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, complete schema descriptions, presence of an output schema, and clear annotations, the description adequately covers usage, return content, and filtering. It addresses all necessary context without needing to explain return values separately since an output schema exists.

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?

All four parameters have descriptive text in the schema, achieving 100% schema coverage. The description reinforces the service parameter's filter role but does not add new semantic meaning. Limit, offset, and company_name are already self-explanatory, so the baseline of 3 applies.

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 explicitly states the tool's purpose: 'Use this tool when the user asks to see client reviews for a specific service provider (company).' It clearly identifies the resource (client reviews) and the action (retrieve), and the optional service filter adds further specificity. This distinguishes it from siblings like get_service_packages and recommend_service_providers, which handle packages and recommendations respectively.

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 opening sentence provides explicit usage context ('when the user asks to see client reviews'), making the primary use case clear. It also mentions optional filtering by service, adding nuance. However, it does not explicitly state when not to use the tool or mention alternative tools by name, which would merit a 5.

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