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

Annotations already declare readOnlyHint=true, idempotentHint=true, destructiveHint=false. The description adds value by specifying the tool lists 'recent prescriptions' and can retrieve full detail from a URL, and instructs on showing the url field. This extends beyond the annotations without contradiction.

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 concise, with two sentences and a tag. It is front-loaded with the purpose. The tag '[Flattened action: list]' is slightly redundant but not detrimental. Overall, it is efficiently structured.

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?

The description covers the two modes and the importance of the url field, but omits details about the 'account' parameter and output structure (e.g., fields in the list response). No output schema exists. For a tool with two parameters and no schema descriptions, more context is needed for full agent understanding.

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 0%, so the description must compensate. It explains that the 'link' parameter is used for getting detail (when provided) or for listing (when empty). However, 'account' parameter is not mentioned at all, leaving its purpose unclear. Only partial parameter explanation 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 it reads meal plan prescriptions, with specific verb 'Read' and resource 'meal plan prescriptions in WebDiet'. It distinguishes from siblings like webdiet_prescription_get_detail by encompassing both list and detail actions, though the dual action is embedded in the same tool. The purpose is unambiguous.

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 gives a usage note 'Always show the url field to the user when they ask for a prescription link', which is helpful but does not explicitly state when to use this tool versus siblings. It implies listing vs. getting detail, but lacks exclusionary guidance or prerequisites.

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