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

readOnlyHint=true already tells the agent this is a safe read, so the bar is lower; the description adds the useful disclosure that the response is the full detail including every meal. It does not say what happens with an unknown or stale id, nor whether the template is returned inline or expanded.

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?

A single efficient sentence with the scope front-loaded and no filler. It is not padded, though it is also too terse to carry the detail the tool needs.

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?

With no output schema, the description partially compensates by describing the return payload ('including every meal'), and readOnlyHint covers safety. Missing is any hint about the id's origin or lookup failure behavior, which matters for a lookup tool keyed on an opaque identifier.

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% for the lone required 'id' parameter, so the schema supplies no meaning at all. The description only implies that 'one' template is selected by the argument; it never states what the id identifies or its format, leaving the coverage gap uncompensated.

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?

States a specific verb (get/full detail) and resource (one diet plan template) and scopes the payload (including every meal), so it is distinguishable from list_diet_plan_templates by the word 'one'. It stops short of naming the sibling tools it differs from.

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?

There is no explicit when-to-use guidance, no mention of prerequisites, and no reference to the list_diet_plan_templates alternative that would supply the required id. The single-template scope is only implied by the phrase 'one diet plan template'.

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