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

Beyond the annotations, it clarifies several material behaviors: a later revision is a resend that invalidates the previous link, 'sent' only means the provider accepted the email, and no invitation secret is returned. These details directly affect how an agent should interpret and invoke the tool.

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 primary action is stated first, and each following sentence contributes a distinct operational fact: authentication precondition, resend semantics, idempotency guidance, success interpretation, and secret handling. There is no redundant or decorative wording.

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 destructive, idempotent write operation with no output schema, the description covers the key success condition, side effects, authentication requirements, resend policy, and data security. An agent has the necessary information to decide when to call the tool and how to interpret the result.

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 description adds meaning to invitationId by implying it is the prepared invitation whose email is already recorded, and it clarifies the resend semantics of a later expectedRevision. For idempotencyKey, it mostly repeats the schema's own description, so it does not add much beyond an already documented param.

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 opens with a specific action and resource: 'Send the exact prepared invitation revision to its recorded email.' This clearly differentiates the tool from prepare-style or revoke-style siblings such as helvabase_prepare_workspace_invitation and helvabase_revoke_workspace_invitation.

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 concrete when-to-use conditions: require explicit user authorization, inspect dispatch/uncertain delivery before resending, and never change an idempotency key to force a replay. However, it never explicitly names alternative sibling tools or tells the agent when to use those instead.

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