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card_iframe_url

Obtain a secure iframe URL to display card details (PAN, CVV, expiry) by providing a card UUID.

Instructions

Get secure iframe URL for viewing card details (PAN, CVV, expiry)

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
idYesCard ID (UUID)
Behavior2/5

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

No annotations are provided, so the description carries full burden. It mentions 'secure iframe URL' but does not disclose traits like temporary links, authentication requirements, or rate limits. Lacks behavioral details for a tool handling sensitive data.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness4/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is a single concise sentence that front-loads the purpose. It is efficient but could include a few more details without becoming overly long.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness2/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

With no output schema or annotations, the description should provide more context about the returned URL (e.g., expiration, one-time use, security properties). Currently incomplete for an agent to use confidently.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 100% for the single parameter 'id' (Card ID UUID). The description adds no extra meaning beyond the schema, so baseline 3 applies.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the tool's purpose: 'Get secure iframe URL' for viewing sensitive card details (PAN, CVV, expiry). It uses a specific verb and resource, distinguishing it from siblings like card_show which likely return details directly.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines2/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

No guidance on when to use this tool vs alternatives (e.g., card_show). No prerequisites or security considerations mentioned. The description does not help an agent decide if this is the right tool for the context.

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

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