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

The description adds valuable context about what the tool returns in different states (authenticated:true with empty pending[] vs. connect_url with per-install URLs), which goes beyond the annotations' readOnlyHint and idempotentHint. A slightly lower score is given because it could be more explicit about being read-only or safe to call, as implied by the annotations, but the state descriptions are a strong positive.

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?

At 51 words, the description is concise and gets straight to the point. But since there are no params or complex conditions to explain, it's a bit easier to be concise. The structure could be improved by front-loading the most important information, but the precision compensates for the slight lack of structural flair.

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 stateless, no-parameter tool, the description is remarkably complete. It could go slightly deeper on edge cases (e.g., behavior when a provider is in an error state) or the meaning of the URLs, but these are absent without any clear gaps. The description provides all necessary information for a developer to use the tool effectively.

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?

With no parameters, there is no schema to cover, and the tool's behavior is independent of user input. The description completely covers the tool's lack of params, so a high score is warranted. A 4 is given because, although there are no params, the description effectively communicates the fixed behavior and return structure, fulfilling the spirit of the dimension.

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 is excellent—it clearly explains what the tool does (returns connection status and URLs), specifies the exact behavior when the system is in different states (all providers connected vs. credentials missing), and includes the exact parameter names and possible values. This level of detail makes the tool's purpose and usage extremely clear, far exceeding a minimum viable description.

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?

While there's some redundancy with the tool's name and the mention of 'connection status' in the description, the description itself is so precise that it negates the need for explicit when-to-use guidance. It mentions alternative tools or conditional usage ('When all providers are connected', 'When credentials are missing'), which effectively guides the user. However, it doesn't explicitly compare itself to siblings, hence the 4 instead of 5.

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