AWS FinOps MCP Server

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

No annotations are provided, so the description carries the full burden of behavioral disclosure. The description only states what the tool does at a high level without revealing any behavioral traits such as whether it's read-only or destructive, what permissions or authentication are needed (though parameters hint at AWS auth), rate limits, or what the analysis output entails. For a tool with 7 parameters and no annotations, this is a significant gap in 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?

The description is a single, efficient sentence that states the core purpose without unnecessary words. It is appropriately sized and front-loaded, making it easy to parse quickly. Every word earns its place, though it could benefit from more detail given the tool's complexity.

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 tool's complexity (7 parameters, no annotations, schema coverage 0%), the description is incomplete. While an output schema exists (which might explain return values), the description lacks essential context such as behavioral traits, parameter meanings, and differentiation from siblings. For a tool with significant input complexity and no annotation support, the description does not provide enough information for effective use.

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 0%, meaning none of the 7 parameters have descriptions in the schema. The tool description does not mention any parameters or provide context about what they mean, such as explaining 'required_tags' or the AWS authentication parameters. With low schema coverage and no parameter information in the description, it fails to compensate, leaving parameters largely undocumented.

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 states the tool's purpose as analyzing tag compliance across AWS resources, which is clear but vague. It specifies the action (analyze) and resource scope (AWS resources) but doesn't distinguish it from sibling tools like 'find_untagged_resources' or explain what 'compliance' entails. The purpose is understandable but lacks specificity about what the analysis produces or how it differs from similar tools.

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 alternatives. With sibling tools like 'find_untagged_resources' that seem related, there's no indication of how this tool differs or when it should be preferred. The description doesn't mention prerequisites, context, or exclusions, leaving the agent with no usage direction.

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