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

The annotation readOnlyHint=true already declares the read-only nature. The description adds value by explaining that it returns the account owning the API key and reinforces the read-only behavior, which is useful for an agent's trust assessment.

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 very concise: three short sentences covering what it does, when to use it, and the read-only nature. No word is wasted and it is front-loaded.

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?

For a zero-parameter, read-only query, the description fully covers the purpose, target resource, and authentication context. It lacks output schema but the description already implies the return is the current account; no gaps for agent decision-making.

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 has zero parameters, so the schema offers 100% coverage by being empty. Per guidelines, 0 params baseline is 4; no further explanation is needed.

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 tool fetches the authenticated Healthie account, identifying the specific resource (the provider/user that owns the API key). This distinguishes it from sibling tools like get_user or get_organization, which target other entities.

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?

It explicitly recommends using this as a first call to verify auth, giving a clear use case. It does not name after natively excludes cases, but the context of the current account makes the intended scope obvious.

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