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

The description adds valuable behavioral context beyond annotations: it uses BYOA OAuth-redirect, returns an authorization URL, and ensures no token passes through chat. It also mentions the production gating, which helps the agent understand environmental constraints. No contradiction with annotations is apparent.

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 compact and front-loaded with the core action. Every sentence serves a purpose: the demo-disabled warning, the model explanation, the security guarantee, and the production gating. No redundant filler.

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 tool with zero parameters and no output schema, the description covers the essential workflow and constraints. It tells the agent what the tool does, what it returns, and under what conditions it can be invoked. It could have clarified how to handle the returned URL (e.g., present to user), but that is reasonably implied.

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 input schema has zero parameters, so there is nothing to document. The description provides relevant flow details (returns an authorization URL) that compensate for the lack of parameters, maintaining the baseline score for a parameterless tool.

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 function: connects Tienda Nube (Nuvemshop) using a specific OAuth-redirect model and returns an authorization URL. It distinguishes itself from sibling connect tools (connect_mercadopago, connect_pedidosya) by naming the exact service.

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 implies when to use the tool (to integrate Tienda Nube) and provides important gating information: demo is disabled and production requires env config. While it doesn't explicitly contrast with alternatives, the context is clear and carries exclusionary notes about availability.

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