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

Annotations already establish readOnly, non-destructive, closed-world behavior, so the safety profile is covered. The description adds that the return value is a magic login link, which is useful behavioral context, but says nothing about link expiry, sensitivity, or whether requesting it has side effects.

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 key information front-loaded and no filler. It only mildly wastes space by restating the tool title before the dash.

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?

An output schema exists, so return-value details need not be described, and annotations cover the safety profile. For a simple link-retrieval tool this is nearly complete, though a note on link lifetime or the distinction from the refresh-link sibling would close the remaining gap.

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 100% and the sole workspace_id parameter is fully documented there, including the default-workspace fallback. The description adds no parameter guidance beyond what the schema already provides, so the baseline of 3 is appropriate.

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 artifact (a magic login link to the API keys page) and its intended use (so the user can create a new API key). It is distinguishable from get_api_keys and delete_api_key, though it never explicitly contrasts itself with the similarly named get_api_key_refresh_link.

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 implied by 'where the user can create a new API key', which gives the agent a reasonable trigger condition. It does not state when to prefer this over get_api_key_refresh_link or generate_login_link, nor any prerequisite or exclusion.

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