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

With no annotations, the description carries the burden, and it discloses two meaningful behaviors: results are scoped to the current account/guest, and an absent session yields an empty result rather than an error. It does not discuss return format or ordering, but for a simple 0-parameter list operation this is reasonable transparency.

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?

A single sentence with no filler. The ownership scope is front-loaded and the session edge case follows immediately; every clause adds information.

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, the description tells the agent what it will return (saved environments), who they belong to, and what happens without a session. It could mention that the result is an array or list, but the tool name and wording make that 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?

There are no parameters, so the description has no parameter semantics to explain. The baseline for a 0-parameter tool applies and no additional annotation is needed.

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 identifies the resource ('environments') and its ownership scope ('current account or guest'), which distinguishes it from get/update/delete_environment siblings. It lacks an explicit verb like 'returns' or 'lists', but the tool name and noun phrase make the purpose clear.

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 session condition ('empty without a session') gives useful context about when results will be present, and the ownership wording implies this is the tool for viewing current account/guest environments. It does not explicitly mention alternatives or state when not to use it, so the guidance is adequate but not explicit.

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