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

Annotation Contradiction: the description says 'Creates a new record' and describes a non-destructive creation operation, while the annotations mark `destructiveHint: true`. The description gives no explanation of destructive side effects and instead implies the opposite behavior. This is a serious inconsistency for an agent relying on both signals.

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?

Three compact sentences cover purpose, return value, request-body requirement, and the relevant alternative. There is minor redundancy in saying both 'Create an environment' and 'Creates a new record,' but the text is otherwise efficient and front-loaded.

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?

The description covers the core action, return value, body requirement, and an alternative tool. However, with no output schema and an empty input schema, it should be more explicit about what 'environment fields' are required and what non-idempotent or destructive behavior might occur, especially given the conflicting destructiveHint annotation.

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 input schema has zero properties, so the baseline is high. The description adds useful guidance by stating that environment fields must be supplied in the request body, which is not visible in the empty schema. However, it remains vague about what those fields are, so it does not fully replace structured parameter documentation.

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 ('Create'), a specific resource ('environment'), and the scope ('in the connected account'). It also clarifies the outcome ('Returns the created environment record') and explicitly separates itself from listing by naming `list_unified_environments`.

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?

Explicitly tells the agent to use `list_unified_environments` for searching or listing environments, which is a clear when-not-to-use condition with a named alternative. It also notes that environment fields are required in the request body, signaling a prerequisite for invocation.

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