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

The readOnlyHint annotation already establishes this is a safe read, and the description adds the underlying REST mapping (GET /staff). It discloses no pagination behavior or return shape, but with annotations covering the safety profile a 3 is appropriate for this simple list.

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 sentences with zero filler, front-loading the resource before the REST endpoint detail. Every clause 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?

For a simple read-only enumeration with one fully documented parameter and a readOnlyHint annotation, the definition is nearly complete. It could mention the return format or pagination, but the absence of an output schema makes this a minor gap.

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 the single 'page' parameter is fully documented in the schema (1-based, response reports page_size/page_count/total_count). The description adds nothing beyond that, so baseline 3 is correct.

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 ('List staff (agent) accounts on the brand'), clearly distinct from sibling resources like contacts, conversations, and channels. It does not explicitly name an alternative sibling, but the resource itself is unambiguous.

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?

Usage is only implied by the verb; there is no explicit when-to-use, prerequisite, or alternative guidance. For a straightforward enumeration tool this is minimally adequate, but nothing tells the agent when this is preferable to, say, a filtered contact or channel lookup.

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