MCP cldkctl Server

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

With no annotations provided, the description carries full burden for behavioral disclosure but offers none. It doesn't indicate whether this is a read operation (likely given billing/invoice context) or a write operation, what permissions might be required, whether it has side effects, rate limits, or what the response format might be. The description fails to provide any behavioral context beyond the bare invocation statement.

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 extremely concise (6 words) but this brevity comes at the cost of being under-specified rather than efficient. While it's front-loaded with the only information provided, it fails to convey meaningful content. The single sentence doesn't waste words but also doesn't provide sufficient value, making it more minimal than optimally concise.

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 tool with no annotations, no output schema, and zero parameters, the description is incomplete. While the parameter situation is covered, the description fails to explain what the tool returns, what business function it serves, or how it differs from similar billing tools. Given the billing/invoice context and numerous sibling tools, more context is needed for an agent to use this 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?

The tool has 0 parameters with 100% schema description coverage, so there are no parameters to document. The description doesn't need to compensate for any parameter gaps. While it doesn't add any parameter information (since none exist), the baseline for zero parameters with full schema coverage is appropriately set at 4, as there's no parameter documentation burden.

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_invoice_sme endpoint' is tautological - it essentially restates the tool name with 'Call' added. It doesn't specify what the tool actually does (e.g., retrieve SME invoices, generate billing data, or process payments). While the name suggests billing/invoice functionality for SMEs, the description fails to articulate a clear purpose beyond invoking an endpoint.

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 'cldkctl_billing_invoice_enterprise' and 'cldkctl_billing_invoice_sme_detail' available, there's no indication whether this tool is for summary data, detailed invoices, or different billing tiers. No context about prerequisites, timing, or appropriate use cases is mentioned.

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