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

Annotations already cover the safety profile (readOnly, non-destructive, open world), and the description adds genuinely new context: scoped connections return only the selected winery while unscoped stdio returns all accessible ones. That is a non-obvious behavioral trait an agent could not infer from annotations or schema.

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?

Front-loads the resource and returned fields, then explains connection-mode variance in one sentence. The trailing endpoint path ('GET /api/v1/wineries or /api/v1/wineries/{wineryId}') is the weakest element but still signals the two access modes.

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 two-optional-param list tool with no output schema, the description names the returned fields and the scoping rules, which is enough to call it correctly. Missing only an explicit pointer to innovint_get_winery for single-record reads.

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?

Schema description coverage is 100%, with limit and offset fully documented including the default and the next_offset hint. The description adds nothing about pagination, so baseline 3 applies since the schema carries this 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?

States a specific verb and resource ('List the connected winery') and enumerates the returned fields (id, name, permissions). It does not explicitly distinguish itself from the sibling innovint_get_winery, so the boundary between 'list' and 'get' is left to inference.

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 second sentence describes how results vary by connection mode (hosted/scoped stdio vs unscoped stdio), which implies when each behavior applies. However, it never tells the agent when to prefer this over innovint_get_winery or other sibling list tools, so usage is only implied.

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