create_payment_method

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

The description only indicates a write operation ('Create') without disclosing behavioral traits such as permissions, idempotency, side effects, or response format, which is insufficient given the absence of 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 is a single concise sentence that efficiently conveys the core purpose without extraneous information, though it could be slightly more structured by including key usage hints.

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?

The description fails to address important contextual details like return behavior, uniqueness constraints, or the optional 'company' parameter, leaving significant gaps for an agent to operate effectively.

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 input schema already provides descriptions for both parameters (name and type) and the company field; the description adds no additional parameter meaning beyond listing examples, thus not improving upon the schema's coverage (50%).

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 (creating a new payment method) and provides concrete examples (Cash, Check, Credit Card), effectively distinguishing it from sibling creation tools that target different entities.

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?

No guidance is given on when to use this tool versus alternative creation tools, nor are any prerequisites or contexts for usage mentioned, leaving the agent to infer suitability.

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