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

Beyond the annotations (readOnlyHint:true, idempotentHint:true, destructiveHint:false), the description discloses exact behavioral details: the response fields (authenticated, pending, connect_url) and how they vary by state. This adds significant value and does not contradict any annotation.

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 two concise, front-loaded sentences. The first sentence states the core function, and the second adds necessary conditional detail. There is no redundant or filler content.

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?

Given the low complexity (zero parameters, no input schema), the description is complete enough. It explains the return values and covers the two key states: all providers connected and missing credentials. It also mentions both the toolkit-level and per-install URLs, which is important contextual information.

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 an empty input schema, so there is no parameter semantics to document. Per the rubric, zero-parameter tools receive a baseline of 4; the description appropriately focuses on behavior instead of parameters.

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's purpose: 'Returns connection status and URLs.' It goes beyond a vague label by specifying the exact conditions and outputs (authenticated:true with empty pending[] when connected; connect_url when credentials are missing). This distinguishes it from sibling tools like authenticate, which presumably performs authentication rather than merely reporting status.

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 useful context for when the tool is relevant: checking whether all providers are connected or discovering missing credentials and connection URLs. However, it does not explicitly mention alternatives or state 'use this instead of authenticate,' so it lacks the explicit exclusions needed for a 5.

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