Marlo MCP

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

No annotations are provided, so the description carries full burden but fails to disclose any behavioral traits. It doesn't indicate if this is a read-only operation, what permissions are required, how errors are handled, or what the output format might be, leaving the agent with insufficient context for safe invocation.

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 only three words, the description is under-specified rather than efficiently informative. It lacks front-loaded critical details and wastes the opportunity to clarify purpose or usage in a single sentence, making it ineffective 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 tool's complexity (a financial detail retrieval with one required parameter), absence of annotations, 0% schema coverage, and no output schema, the description is completely inadequate. It fails to compensate for missing structured data, leaving the agent unable to understand how to use the tool correctly.

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 the parameter 'payout_id' is undocumented in the schema. The description adds no information about this parameter—no explanation of what a payout_id is, its format, where to obtain it, or examples. This leaves the agent guessing about required input.

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 'Get payout details' is a tautology that restates the tool name without adding meaningful specificity. It doesn't clarify what 'payout details' include or distinguish this tool from sibling tools like 'list_all_payouts' or 'get_bill_details' that might handle related financial data.

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 prerequisites like needing a payout_id, nor does it differentiate from sibling tools such as 'list_all_payouts' for browsing payouts or 'get_bill_details' for other financial records.

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