swagger-petstore---openapi-3.0.findPetsByStatus

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

The annotations already declare readOnlyHint=true, idempotentHint=true, and destructiveHint=false, and the description's "Finds" language is consistent with that read-only safety profile. The description adds no additional behavioral context beyond the annotations—no mention of potential large result sets, auth needs, or the implication that status is a filter parameter. Since annotations carry the safety burden and the description is consistent (no contradiction), a mid-range score is appropriate.

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 a single, front-loaded sentence with zero filler words—maximally compact at four words. It could have marginally improved by enumerating valid statuses (available/pending/sold), but every word earns its place and the structure is exemplary for brevity.

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 read-only look-up tool backed by annotations and an output schema, the description covers the basics, but notable gaps remain: it does not enumerate the valid status values, does not disambiguate from the twin `petstore-api.findPetsByStatus` tool, and never addresses the empty-schema situation. The basics are there for a simple petstore finder, but the description leaves the agent to guess at meaningful 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?

The schema contains zero parameters (baseline 4), but the description's "by status" implies a status filter parameter that does not exist in the schema. This creates a mild semantic trap where the agent may expect to pass a status value but cannot. The description's implication of a non-existent parameter reduces the score below baseline.

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?

"Finds Pets by status." uses a specific verb + resource + filter criterion, clearly indicating this tool retrieves pets filtered by their status. This is clear but provides no sibling differentiation—an identical `petstore-api.findPetsByStatus` exists in the sibling list. The description is also undercut by the empty input schema, which makes the "by status" criterion impossible to exercise via parameters.

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?

No guidance is given on when to use this tool versus alternatives. There is no mention of how it differs from the near-identical `petstore-api.findPetsByStatus` sibling or the conceptually-adjacent `findPetsByTags`, nor any note on prerequisites or when to prefer this over `getPetById`.

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