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

With no annotations provided, the description carries the full burden. It usefully discloses the return content (tier and access level), but it does not describe error behavior, security considerations around the API key, or whether any side effects occur. This is adequate but not richly transparent.

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 short and front-loaded, stating the action and return value first, followed by a compact Args section. Every sentence contributes useful information, and there is no filler or repetition.

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 single-parameter authentication tool, the description covers what it does, what it returns, and the parameter format. Since there is no output schema, the return description is helpful, though it does not mention error responses or how to handle an invalid key; these are minor gaps for this low-complexity tool.

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 schema only defines api_key as a generic string with 0% description coverage. The description compensates by identifying the key as the LaborCurrent API key and specifying its expected format ('starts with wf_'), adding meaning the schema alone does not provide.

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 states a specific action ('Authenticate'), the resource ('LaborCurrent API key'), and what it returns ('your tier and access level'). This clearly distinguishes it from the sibling data-retrieval tools, which all focus on records, layoffs, market data, and statistics.

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 this is the initial authentication step, but it never explicitly says 'use this before other tools' or contrasts it with alternatives. There is no exclusion guidance, so the usage context is only implied by the tool's name and purpose.

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