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

The annotation readOnlyHint:true is consistent with the tool's behavior of merely returning connection status and URLs without any side effects. The description does not imply any destructive or modifying actions, and the idempotentHint:true is also consistent since the tool always returns status and URLs, presumably unchanged. No hidden side effects are suggested.

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 reasonably concise, about two sentences, and clearly structured with a period separating the main statement from the conditional details. While it could be slightly more compact, it avoids redundancy and effectively conveys the necessary information without unnecessary adornment.

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?

The description covers the primary use cases and expected outputs, which is adequate for a read-only status tool. However, it lacks an explicit output schema and does not mention potential edge cases (e.g., errors like network failures or partial connectivity). Given that the sibling tools include authenticate and sefaz_ro_certidao_debitos_consultar, this tool likely serves a specific integration context, but the description does not elaborate on that context.

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 description fully accounts for this by not referencing any inputs. The schema confirms an empty properties object, and the description's coverage is 100% as there are no parameters to explain. This is clear and unambiguous.

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: to return connection status and URLs. It explicitly outlines the two possible outcomes: when all providers are connected (authenticated:true and empty pending[]) and when credentials are missing (returns connect_url for toolkit and per-install URLs). The tool name 'connect' aligns with this purpose.

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 specific guidance on when the tool yields particular results, which serves as implicit usage instructions. It mentions the conditions under which each response occurs, helping users understand when to call it (e.g., to check if all providers are connected or to retrieve connect URLs when credentials are missing).

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