ListResourceExplorerViews

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

With no annotations, the description carries the full behavioral burden; it partially meets this by disclosing that results are scoped to the current AWS account and region (i.e., no cross-account listing). It says nothing about pagination, permissions, or result limits, which are material for a list-all operation.

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?

The purpose is front-loaded in the first sentence and the account/region scoping follows immediately; sizing is appropriate. The final "Returns: List of Resource Explorer views" line simply restates the title and earns little space.

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 no-parameter, read-only list tool with no output schema, the description covers what it returns, the scope of the results, and why the results matter. Only pagination/authorization behavior is unaddressed, which 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 zero parameters, so per the rubric the baseline is 4. There is no parameter syntax or meaning the description could add, and the schema is not a source of gaps here.

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 ("List") and resource ("Resource Explorer views") and adds useful context about scope (current AWS account and region) and purpose (fault injection experiments). It does not, however, distinguish itself from relevant siblings such as SearchResources or CreateResourceExplorerView, so an agent must infer the boundary.

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 implies usage by noting the views "can be used to find and filter resources for fault injection experiments," which gives the agent a reason to call it. It offers no explicit when-to-use vs. when-not guidance and never names an alternative (e.g., SearchResources), leaving the reader to infer the choice.

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