send_paypal

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

With no annotations, the description carries full burden but only states the basic action. It fails to disclose important behaviors like fees, reversibility, recipient requirements, or potential failure modes, which are critical for a money-sending 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?

A single concise sentence that is front-loaded with the key action. However, it is slightly too brief and could benefit from additional context without becoming verbose.

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 complexity of sending money (5 parameters, no output schema, no annotations), the description is incomplete. It omits crucial details like response structure, error handling, and the fact that either email or phone is needed despite neither being required in the schema.

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 per guidelines baseline is 3. The description adds no additional meaning beyond the schema; it merely summarizes the action without clarifying parameter usage such as the mutual exclusivity of recipientEmail and recipientPhone.

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 the action (send money), the method (PayPal Payouts), and the target (email or phone number), providing a specific verb and resource that distinguishes it from sibling tools like 'pay' or 'refund'.

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 provides no guidance on when to use this tool versus alternatives (e.g., 'pay' or 'paypal'), nor does it mention prerequisites, restrictions, or when not to use it.

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