Contract Testing: Admin Invite Users

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

Annotations already indicate this is a non-read-only, non-idempotent, non-destructive operation with open-world side effects. The description adds minimal behavioral context beyond 'send invitations,' and does not explain what happens after invitations are sent, such as email delivery or whether duplicate invites are allowed. No contradiction with annotations exists.

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 short and front-loaded with the action sentence, but the 'Toolset: Admin' line duplicates the title, and the 'Parameters' section repeats what the input schema already provides. Some redundancy prevents a higher conciseness score.

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?

This is a low-complexity tool with one well-documented required parameter and annotations covering idempotency, destructiveness, and side effects. The description is nearly sufficient for an agent to invoke it correctly, though it could be more complete by clarifying invitation behavior and expected results.

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%, and the schema already documents the users array, its required email/name fields, and minItems. The description's parameter section merely restates the schema without adding extra meaning or usage detail.

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 states a specific verb and resource: 'Send invitations to new users (admin).' This clearly identifies the action and distinguishes it from listing, updating, or deleting users. It does not explicitly contrast with the sibling admin_create_user, but 'invite' versus 'create' is still a meaningful distinction.

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 gives no guidance on when to use this tool versus alternatives such as contract-testing_admin_create_user, nor does it explain whether users must already exist or what conditions apply. The '(admin)' tag signals scope, but not usage context or exclusions.

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