Usage And Billing 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. 'Report Usage' implies a read-only operation that might generate or output usage data, but it doesn't specify whether this is a safe operation, what permissions are required, how the report is formatted, or any side effects. The description fails to provide essential behavioral context beyond the vague action.

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 'Report Usage' is concise, it is under-specified rather than efficiently structured. The description consists of only two words and fails to convey necessary information about the tool's purpose or behavior. Conciseness should not come at the expense of clarity, making this score low due to inadequate content.

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 lack of annotations and output schema, the description is incomplete for a tool that likely involves reporting usage data. It doesn't explain what the tool returns, how it behaves, or any operational constraints. For a tool in a context with many sibling tools (e.g., 'get_usage'), more detail is needed to guide the agent 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 input schema has 0 parameters with 100% coverage, meaning there are no parameters to document. The description doesn't need to add parameter semantics, so it meets the baseline expectation. No additional information is required or provided, which is appropriate given the lack of parameters.

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 'Report Usage' is a tautology that merely restates the tool name without adding any meaningful clarification. It doesn't specify what kind of usage is being reported, to whom, or what the report contains. While it indicates a reporting function, it lacks the specificity needed to distinguish it from sibling tools like 'get_usage'.

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 doesn't mention any context, prerequisites, or exclusions, nor does it differentiate it from sibling tools such as 'get_usage' or others that might handle usage-related operations. This leaves the agent without direction on appropriate usage scenarios.

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