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

readOnlyHint=true already tells the agent this is a safe read, and an output schema exists, so the description does not need to explain return values. The description does add the project-scoping constraint, but says nothing about pagination, environment definitions, or permissions beyond that.

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 front-loaded sentence with no wasted words. It is efficient, though the minimalism borders on under-specification given the tool's place in a large list-family.

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?

With annotations declaring read-only and an output schema present, the basics are covered, but the description is silent on result ordering/limits and on how 'environment' relates to the sibling project and component resources. Adequate but with clear gaps for a list tool in a dense namespace.

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% for the single 'project' parameter, so the schema already carries the parameter semantics. The description only repeats the scoping concept ('in a project') without adding format or canonical-name guidance beyond the schema.

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 environments') and scopes it to a project, so the agent knows exactly what is returned. It does not differentiate itself from the many sibling list tools (CYCLOID_PROJECT_LIST, CYCLOID_COMPONENT_LIST, etc.), leaving the agent to infer that 'environments' is a distinct resource type.

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 description gives no when-to-use guidance, no exclusions, and no pointer to alternatives. Despite a crowded list-tool family, the agent gets no help choosing between this and CYCLOID_PROJECT_LIST or CYCLOID_PROJECT_GET.

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