PayPing: create customer

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

Annotations already declare readOnlyHint=false, destructiveHint=true, idempotentHint=false, openWorldHint=true, so the safety profile is covered. The description supplements this with the practical consequence ('Creates real data') and a required user-confirmation step, plus the returned `code` and why it matters. It doesn't cover failure modes, but the added context is real value beyond 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?

Two tight sentences, front-loaded with what the tool produces, then the caution. No filler. Slightly terse on the parameters side, but efficient.

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?

A mutation tool with safety covered by annotations and an output schema that carries the return shape, so those gaps are acceptable. However, with 8 parameters at only 50% schema coverage and no description of required fields or business/national_id semantics, the definition is not complete for correct invocation.

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 50% across 8 parameters, and the description says nothing about any of them – no mention of required first_name/last_name, the is_business legal-person distinction, or national_id formats. The half of parameters lacking schema descriptions are left undocumented in both places, so the description fails to compensate.

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?

States a specific verb+resource ('Save a new customer in the PayPing account') and adds the return payload ('return it with its code'). This clearly separates it from the sibling read tools (get_customer, list_customers) and the other create_* tools. It does not name a sibling explicitly, which is why it's a 4 rather than 5.

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?

Gives one procedural instruction ('confirm the details with the user before calling') but no when-to-use vs when-not guidance and no alternatives named. Usage is only implied from the create semantics.

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