get_hydration_data

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

No annotations are provided, so the description must reveal behavioral traits. It only states the basic operation (get) and the parameter. There is no mention of whether authentication is required, rate limits, what happens with invalid dates, or the structure of the response. This lack of detail fails to inform the agent about side effects or constraints.

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 extremely concise with two short lines. It front-loads the purpose immediately and only contains necessary information. Every part earns its place without any wasted words.

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 simple nature of the tool (one parameter, no output schema, many siblings), the description covers the basic purpose and parameter but omits details like what data is returned, the unit of measurement, or potential errors. It is minimally viable but not fully complete for an agent to use without further context.

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 0% description coverage, but the description adds meaning by specifying 'Target date in YYYY-MM-DD format' for the cdate parameter. This compensates for the schema's lack of detail and provides essential formatting guidance.

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 verb 'Get' and the resource 'hydration intake data', and specifies the date parameter. It distinguishes from sibling tools by focusing on hydration data, leaving no ambiguity about the tool's function.

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 use when hydration data is needed but provides no explicit guidance on when to use this tool versus alternatives. It does not mention when not to use it or list any prerequisites, leaving the agent without comparative context among the many sibling tools.

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