MCP cldkctl Server

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

No annotations are provided, so the description must carry the full burden of behavioral disclosure. It offers no information on whether this is a read or write operation, authentication needs, rate limits, side effects, or what the output looks like. The description is purely procedural ('Call the... endpoint') with no behavioral context.

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?

While concise (one sentence), the description is under-specified and fails to convey meaningful information. It wastes its single sentence on a tautological statement rather than providing useful content, making it inefficient despite its brevity.

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 complexity implied by billing operations and the lack of annotations or output schema, the description is completely inadequate. It doesn't explain what the tool returns (e.g., cost data format), behavioral traits, or usage context, leaving critical gaps for the agent to operate effectively.

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% (the single parameter 'project_id' is documented as 'ID of the project'), so the schema does the heavy lifting. The description adds no additional parameter semantics beyond what's in the schema, resulting in the baseline score of 3 for adequate but minimal value.

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 'Call the cldkctl_billing_monthly_cost endpoint' is a tautology that merely restates the tool name without explaining what it does. It doesn't specify the verb (e.g., retrieve, calculate, display) or the resource (monthly cost for what?), and fails to distinguish it from sibling billing tools like cldkctl_billing_daily_cost or cldkctl_billing_history.

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?

No guidance is provided on when to use this tool versus alternatives. It doesn't mention prerequisites, context (e.g., billing management), or differentiate from related tools like cldkctl_billing_daily_cost (daily vs. monthly) or cldkctl_billing_invoice_* tools, leaving the agent to guess based on naming alone.

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