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

Annotations already mark destructiveHint=true and readOnlyHint=false, and the description adds meaningful beyond-annotation context by stating the deletion is permanent and requires explicit user confirmation. This gives the agent crucial operational framing without contradicting the annotations.

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 consists of two short sentences with no filler. The core behavior and the critical confirmation precondition are front-loaded, and every word contributes to the agent's ability to invoke the tool safely.

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 simple three-parameter destructive operation, the description, combined with the full schema coverage and annotations, is sufficiently complete. It covers the essential deletion semantics and the confirmation gate, though it does not describe success/failure response behavior since no output schema is present.

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%, with clear descriptions for id, company, and confirm. The description reinforces the confirmation requirement but adds no syntax, format, or parameter-specific details beyond what the schema already provides, so the baseline score of 3 is appropriate.

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 action ('Permanently delete') on a specific resource ('a transfer from QuickBooks Online'), making the tool's purpose unmistakable. It distinguishes the tool from create_transfer, update_transfer, and search_transfers by focusing on deletion and permanence. No tautology or ambiguity.

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 appropriate usage context: when a transfer must be permanently removed and the user has confirmed the action. However, it does not explicitly name alternatives or state when this tool should not be used. The confirmation requirement provides useful procedural context but not full alternative-routing guidance.

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