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

With no annotations provided, the description carries full burden and does well: discloses the synthetic nature, return of id, non-visibility in public listings, and the effect of leaving fields out. This is rich behavioral 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?

Four concise, front-loaded sentences. 'Start here' immediately signals usage, and each subsequent sentence adds essential context without redundancy or fluff.

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 create tool without output schema or annotations, the description covers return value, purpose, visibility, and parameter usage. It could mention how to locate the created business later (e.g., via list_sandbox_businesses), but sibling tools imply that.

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 100%, so the baseline is 3. The description adds value by explaining that parameters can be set to whatever the scenario needs and that omitted fields produce gaps, enhancing the meaning beyond the schema.

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 uses a specific verb 'creates' and resource 'synthetic business', clearly states it returns the id, and distinguishes itself as the starting point for Business Health sandbox workflows.

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?

Explicitly states 'Start here to try Business Health', indicating when to use. It also explains how omitting fields creates gaps, but does not mention explicit alternatives or when not to use it.

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