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

Describes the full side-effect chain: opening the link mints a real key, displays it once, expires in minutes, and works only once. Clearly states the key is never returned by any MCP result, preventing misuse.

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?

Three compact sentences convey purpose, usage condition, and behavior. The word 'Free' is mildly extraneous but does not bloat the description. Information is front-loaded with the primary use case.

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 simple link-generating tool with no output schema, it explains the workflow, security characteristics, and the notable fact that the key is not returned. Enough context for an agent to decide when to invoke it and what to expect.

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 single optional parameter keyName is fully documented in the schema with a clear description and default value. The tool description adds no additional meaning beyond the schema, so baseline score applies.

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?

Clear statement that the tool provides a one-time link for clients unable to use OAuth, with the specific purpose of minting a nittim API key. Unambiguously differentiates from sibling tools which handle audits, modules, and reports.

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?

Explicitly scopes usage to clients that cannot sign in over OAuth, implying the alternative path. Clarifies that the key itself is never returned and the link expires quickly, guiding agent expectations about when and how to use the tool.

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