loyalteez_check_perk_eligibility

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

No annotations are provided, so the description carries the behavioral burden. It usefully discloses the return shape (eligibility status, balance check, cost, missing amount), but does not state permissions, whether the operation has any side effects, or rate limits for a tool that may query external services.

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?

Front-loaded with the core action and return fields in two tight sentences. The documentation link is relevant and short, though slightly tangential to direct invocation guidance.

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 no output schema, the description usefully enumerates return fields and links to service documentation. It is nearly complete for a check-only tool, though it lacks auth/permission context and explicit relation to claim/redeem siblings.

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 100%, so all four parameters are already documented in the input schema. The description adds no parameter-specific meaning beyond what the schema provides, which is the expected baseline when the schema does the heavy lifting.

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?

States a specific verb and resource: 'Check if user can claim a specific perk.' It is clearly a read-only eligibility check and distinct from redeem_perk, but it does not explicitly name or differentiate against sibling tools such as loyalteez_check_eligibility or loyalteez_redeem_perk.

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 this is a pre-claim check, but gives no explicit when-to-use guidance, no conditions for choosing it over redeem_perk or check_eligibility, and no prerequisites. The 'See also' link is documentation, not usage guidance.

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