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

Annotations already declare readOnlyHint, idempotentHint, destructiveHint=false and openWorldHint=false, so the safety profile is fully covered. What the description adds is the behavioral fact that the target is implicitly the authenticated user (no identifier parameter is needed) and an enumeration of what comes back. Because there is no output schema, that enumeration is the only source of return-value information, which makes it a meaningful contribution beyond the annotations.

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 sentence with the scope stated first and the covered domains listed after it. No filler, no restatement of the tool name, and nothing an agent would need to parse twice.

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 zero parameters, rich read-only annotations, and no output schema, this description carries the remaining burden of telling the agent what data is available, and it does so. The one gap is that it says nothing about fields being optional or unpopulated, which matters for an agent deciding whether to trust a missing condition or biometric entry.

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 tool takes zero parameters, so per the baseline this scores 4. The description is consistent with that: it makes clear the context is scoped implicitly to the signed-in user rather than selected via arguments, so an agent will not go hunting for an ID field.

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 names the resource precisely (the signed-in user's Stackwell health context) and enumerates the data domains it covers (goals, conditions, diet, fasting protocol, lifestyle, biometrics, restrictions). The 'Stackwell' qualifier and the field list separate it from the vora_/vitalli_ health-profile getters. It is a noun phrase rather than a verb phrase, but the tool name supplies the action, so the purpose is still 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?

Usage is only implied: the field list suggests it should be called before personalizing advice or before writing changes. There is no explicit statement of when to prefer this over stackwell_update_health_context (the obvious sibling) or the other products' health-profile getters, and no exclusions. The product-name scoping gives partial differentiation, which lands this at 'implied usage' rather than zero guidance.

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