Usage And Billing MCP Server

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

No annotations are provided, placing full burden on the description to disclose behavioral traits. 'Delete product' implies a destructive, irreversible mutation, but the description fails to specify permissions required, side effects (e.g., cascading deletions), error conditions, or confirmation prompts. This omission is critical for a tool with permanent consequences.

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 with two words, the description is under-specified rather than efficiently structured. It lacks front-loaded critical information (e.g., irreversible action) and omits necessary context for safe use. Conciseness should not come at the expense of clarity, especially for destructive operations.

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 high complexity (destructive mutation) and absence of annotations or output schema, the description is severely incomplete. It does not address behavioral risks, success/error responses, or integration with sibling tools. For a delete operation, this minimal description fails to provide the necessary context for reliable agent 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 100%, with the 'id' parameter documented in the schema. The description adds no parameter semantics beyond what the schema provides, such as format examples or validation rules. However, with only one parameter and high schema coverage, the baseline score of 3 is appropriate as the schema adequately handles parameter documentation.

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 'Delete product' is a tautology that merely restates the tool name without adding meaningful context. It specifies the verb ('Delete') and resource ('product'), but lacks any distinction from sibling tools or elaboration on what 'product' refers to in this system. This minimal statement provides basic intent but fails to clarify scope or differentiate from similar operations.

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. It does not mention prerequisites (e.g., product must exist), exclusions (e.g., cannot delete if in use), or refer to sibling tools like 'get_products' for verification. With no usage context, an agent cannot determine appropriate invocation scenarios.

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