invite_user

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

With no annotations, the description carries the burden of behavioral disclosure. It does mention the default compact confirmation and the verbose option for full response, which is useful. However, it does not disclose side effects (e.g., email sending), required permissions, or behavior if the role is omitted, leaving some behavioral gaps.

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 a single, front-loaded sentence. It states the core purpose first, then uses a dash to add the key behavioral detail about response format. Every word contributes value, with no 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?

Given the tool's low complexity (simple parameters, no output schema), the description adequately covers the return behavior (compact vs full). It does not address edge cases like duplicate invites or role defaults, but the schema handles parameter details. Overall, sufficiently complete for a straightforward invite tool.

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 coverage is 100%, so all parameters are already described in the schema. The description does not add meaning beyond the schema, referencing 'specified role' and 'verbose=true' but without additional detail. This matches the baseline of 3 for full schema coverage.

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 a specific action ('Invite a new user') on a specific resource ('the Fivetran account'), with an additional qualifier ('with a specified role'). The verb 'invite' is distinct from all sibling tools, eliminating ambiguity about which tool to select.

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 the tool is used for inviting users but provides no explicit guidance on when to use it versus alternatives (there are none for inviting) or any prerequisites/exclusions. The context is clear from the name and action, but the description does not elaborate on scenarios or conditions.

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