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

Annotations already guarantee that this is a read-only, idempotent operation. The description goes beyond that by explaining concrete response behavior: authenticated true with empty pending[] when all providers are connected, and connect_url when credentials are missing. That is meaningful behavioral context beyond the annotations.

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 three short, information-dense sentences. Each sentence adds a distinct piece of information: the general purpose, the successful connection response, and the missing-credential response. No filler or redundancy.

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 such a low-complexity, zero-parameter tool with no output schema, the description is sufficiently complete. It covers the main expected return states and explains the URL fields the agent should expect, leaving little ambiguity for correct usage.

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 and the schema is fully described of the input empty, so there is no parameter semantics gap. The baseline for a 0-parameter tool is appropriate, and the description does not need to compensate for any missing parameter details.

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 returns connection status and URLs, and then explains the two relevant output states (all providers connected vs. missing credentials). This distinct behavior differentiates it from siblings like authenticate, which likely performs the actual connection flow.

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 provides strong context about what the return values look like, but it does not explicitly say when to call this tool instead of an alternative such as authenticate. The intended usage is implied rather than clearly defined with exclusions.

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