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

Annotations already declare readOnlyHint=false, openWorldHint=true, idempotentHint=true, and destructiveHint=false. The description adds no extra behavioral context such as side effects, idempotency implications, or external service interactions. It does not contradict the annotations but also fails to add value beyond them.

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, direct sentence that front-loads the action and resource. It contains no unnecessary words and is easy to parse.

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?

Despite good schema coverage and annotations, the description is too sparse for a tool with 9 optional parameters, openWorldHint, and several related siblings. It does not explain when to use this tool, how it differs from similar tools, or what the openWorldHint implies for execution. The output schema exists, so return values are covered, but usage context is lacking.

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 100% description coverage for all 9 parameters, so the baseline is 3. The description only vaguely mentions 'treatment-plan and clinic pricing inputs' without explaining specific parameters like plan_id, clinic_id, or request_id. It adds minimal semantic value over 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 clearly states the action 'Generate a Toofi price estimate' and mentions the inputs 'from treatment-plan and clinic pricing inputs.' This is a specific verb+resource statement. However, it does not differentiate from the sibling tool 'get_agent_billing_quote', which could also relate to pricing.

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 provides no guidance on when to use this tool versus alternatives, nor any prerequisites or conditions. For example, it does not clarify the relationship between 'generate_price_estimate' and 'get_agent_billing_quote', leaving the agent without direction for tool selection.

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