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

readOnlyHint=true already establishes this is a safe read; the description adds the returned field list and the underlying endpoint (GET /account/users). It says nothing about pagination, rate limits, or ordering, so it adds only moderate context beyond the annotation.

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 tight sentences plus an endpoint reference; the payload shape is front-loaded and nothing is padded or repeated.

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 parameterless list tool with no output schema, listing the returned fields plus the endpoint makes it essentially complete. The only gap is the absence of pagination/result-size behavior.

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?

Zero input parameters, so per the baseline the description carries no parameter burden. The note about which downstream parameters consume the returned id is a helpful cross-tool pointer even if not a parameter per se.

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 the account's JobNimbus users (team members)') and even enumerates the returned fields (name, email, id, active). No sibling tool lists users, so confusion risk is nil, and an agent knows exactly what it gets back.

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 line 'The id is what owners, sales_rep and owner_ids take' tells the agent when this tool is needed — as an ID lookup feeding other tools' parameters. It lacks an explicit when-not-to-use or alternative-tool clause, but the usage context is clear.

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