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

Annotations declare readOnlyHint=true, and the description adds 'AI-generated' and 'rate-limited', disclosing that outputs are non-deterministic and throttled. This goes beyond the annotation, though it doesn't detail rate limit specifics or error handling. The 'free' attribute also provides a cost context.

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 compact: one core sentence plus a parenthetical listing constraints. It front-loads the purpose and includes only essential extra info. The slight redundancy of repeating 'Business Name Generator' before the actual description costs a point, but there is no filler.

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 generator with no output schema, the description covers the core purpose and key constraints (free, AI-generated, rate-limited). It does not specify output format or count, but that is not critical for a name generator. The description is reasonably complete given the tool's simplicity and the readOnly annotation.

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 coverage is 100%, with each parameter (style, topic, keywords) having a clear description. The tool description adds no additional parameter semantics beyond the schema, so it meets the baseline of 3 for high schema coverage. No further elaboration on parameter relationships or defaults is provided.

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 'Generate brandable business name ideas', using a specific verb (generate) and resource (business name ideas). This distinguishes it from sibling generators like ad-copy-generator or blog-outline-generator, which target different content types. The purpose is unambiguous despite the redundant title prefix.

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 usage when the user needs business name ideas, but provides no explicit guidance on alternatives or when not to use it. The 'free, AI-generated, rate-limited' note hints at constraints but not usage scenarios. It lacks the explicit alternative-referencing seen in best-practice examples.

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