AWS MCP Server

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

With no annotations provided, the description must carry the full burden of behavioral disclosure. It partially succeeds by indicating the operation is read-only ('Get') and revealing specific output content (NS records, VPCs), but fails to mention error behaviors (e.g., if zone not found), permission requirements, or rate limit considerations.

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 description is a single, efficient sentence of 11 words with the action verb front-loaded. Every word earns its place by conveying the operation type, resource, and specific returned fields without redundancy.

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?

Given the absence of an output schema, the description partially compensates by highlighting key return data (NS records and VPCs). For a straightforward read operation, this is reasonably complete, though it could benefit from mentioning other returned fields like configuration details or tags.

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 100% description coverage, establishing a baseline of 3. The description adds no explicit parameter guidance, but the mention of 'hosted zone' implicitly maps to the required hosted_zone_id parameter. No additional syntax or format details are provided 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?

The description clearly states the action ('Get') and resource ('Route53 hosted zone'), and specifies key returned data ('NS records and VPCs'). While it effectively distinguishes from the sibling list_hosted_zones by implying detailed single-resource retrieval versus listing, it does not explicitly mention when to choose this over alternatives like list_resource_record_sets.

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 provides no guidance on when to use this tool versus its siblings, such as aws_route53_list_hosted_zones for discovery or aws_route53_change_resource_record_sets for modifications. It also omits prerequisites like needing the hosted_zone_id from a prior list operation.

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