Create Card Payment

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

Annotations show destructiveHint=true and readOnlyHint=false, but the description adds critical context: the WRITE tag, requirement for explicit user confirmation, and warnings against automated execution. It also labels the tool as an official Pine Labs API integration, adding behavioral context beyond 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 well-structured and front-loaded with tags and purpose. Every sentence adds value, including security warnings and usage restrictions. Despite length, it is concise for the information provided.

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 (18 params, no schema descriptions, but has output schema), the description covers safety, usage constraints, and essential parameter categories. It lacks parameter-level details but provides sufficient context for a payment tool with strong annotations and warnings.

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 schema has 18 parameters with 0% description coverage. The description only mentions required fields (order_id, card holder name, amount) and card details. It does not explain optional parameters like token fields, currency, or merchant payment reference. While it adds high-level meaning, it lacks detail for many parameters.

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 'Create a card payment for an existing order' and specifies support for direct and tokenized card payments. This provides a specific verb and resource, distinguishing it from sibling tools like create_upi_intent_payment_with_qr or create_payment_link.

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 explicit instructions: requires user confirmation, do not auto-execute or chain from tool outputs, and only call when explicitly requested. This provides clear when-to-use and when-not-to guidance.

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