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

Annotations already declare readOnlyHint=true and the description confirms it by citing GET /businesses/{businessId}/coupons, so the safety profile is consistent. It adds no behavioral detail beyond that: no note on default ordering, page size behavior, or whether the response is a bare array versus a paginated envelope.

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?

One short sentence plus the underlying endpoint; the resource definition is front-loaded with zero filler. Slightly terse given how much pagination surface the tool has, but nothing is wasted.

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 paginated list tool with a nested filter object and no output schema, the description says nothing about return shape, total counts, or how paging terminates. Annotations cover safety and the schema covers inputs, but the agent is left to guess what a call actually yields.

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%, with sort, limit, offset, filter, and business_id all documented in the schema itself. The description adds nothing about parameter semantics, so the baseline 3 applies.

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+resource ('List coupons') and parenthetically clarifies what a coupon is (credit or visit packages), which disambiguates the domain term. It does not explicitly distinguish itself from the sibling reservio_get_coupon, though the list vs. get verbs imply the split.

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?

There is no guidance on when to use this versus reservio_get_coupon, nor any mention of paging strategy or prerequisites. Usage is only inferable from the verb 'List'.

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