get_gift_card_balance

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

No annotations are provided, so the description carries full burden. It only states 'check balance' without disclosing safety profile (read-only), authentication needs, or side effects. Minimal transparency for a tool that likely has no destructive effects.

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 extremely concise, front-loading the purpose in the first sentence, and efficiently listing arguments in a clear format without any wasted words.

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?

For a simple balance-check tool with an output schema, the description is nearly complete. It could mention that checking balance is typically a prerequisite for apply_gift_card, but the core functionality is well covered.

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 0%, but the description adds 'Gift card number' and 'Gift card PIN' for the two parameters, adding basic meaning beyond names. However, it does not specify format, length, or other constraints.

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 tool checks the balance of a Grubhub gift card, using specific verb 'check' and resource 'balance of a Grubhub gift card'. It distinguishes from sibling tools like apply_gift_card and get_campus_card_balances.

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 implies usage when checking gift card balance but lacks explicit guidance on when to use versus alternatives, no when-not-to-use scenarios, and no context about prerequisites or ordering relative to other tools.

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