isw_block_card

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

No annotations exist. The description only says 'immediately' and requires confirm, but does not disclose side effects, reversibility, or security implications of blocking a card.

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 short, front-loaded sentences with no wasted words. Could be seen as too brief, but it earns its place.

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?

With 6 parameters, one nested object, and no output schema, the description fails to explain full usage, expected response, or prerequisites. Agents lack key invocation details.

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 50% (3 of 6 params described). The description adds no parameter meaning, leaving 'extra' and 'requestRef' unexplained and amounts ambiguous in context.

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 states 'Block a card immediately,' which is a clear verb+resource. However, it does not differentiate from sibling tools like isw_block_prepaid_card or isw_unblock_card.

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 mentions 'Requires confirm: true' but provides no guidance on when to use this tool vs alternatives like unblock or prepaid block.

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