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

Annotations already declare readOnlyHint=true, destructiveHint=false and openWorldHint=true, so safety is covered. The description adds genuine value by disclosing the shape of the result (IDs, names, virtual flag) and the backing endpoint, which an agent cannot get from annotations or from a missing output schema. It omits any statement about result size, ordering, or whether the list is cached/live.

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, front-loaded with what the tool returns. The trailing endpoint path ('GET /php_functions/get_depots.php') is of marginal value to an agent selecting or invoking the tool, making it the one element that does not fully earn 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 zero-parameter read-only listing with no output schema, the description covers purpose and result shape, which is what an agent needs to select and call it correctly. The absence of result-volume or ordering notes is a minor gap given the tool's simplicity.

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 tool takes no parameters at all, which is the baseline-4 case; there is nothing for the description to disambiguate. The single 'virtual' flag mentioned is a returned field, not an input, so no parameter semantics are missing.

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?

The description gives a specific verb ('List') and resource ('depots'), plus the exact fields returned (IDs, names, virtual flag), so an agent can distinguish it from siblings like hirehop_list_contacts or hirehop_list_products by resource alone. It stops short of explicitly contrasting itself with any sibling, but none of the listed siblings compete for the same resource.

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: it is a depots listing, so an agent infers 'call this when you need depot identifiers or names.' There is no statement of prerequisites, no pagination/filtering guidance, and no when-not condition, though with zero parameters and no competing sibling the practical ambiguity is low.

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