Ludus FastMCP

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

No annotations are provided, so the description carries full burden. It states 'admin only' for user_id, which hints at permission requirements, but doesn't disclose other behavioral traits like whether this is a read-only operation, potential rate limits, pagination, or what 'deployment logs' entail. The description adds some context but leaves significant gaps.

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 appropriately sized and front-loaded with the main purpose. The 'Args' and 'Returns' sections add structure, though they could be more integrated. No wasted sentences, but it's slightly fragmented.

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 no annotations, 0% schema coverage, and an output schema exists (so return values are covered), the description is moderately complete. It explains the tool's purpose and parameter semantics but lacks behavioral details and usage guidelines, making it adequate but with clear gaps for a logging tool.

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%, so the description must compensate. It adds that user_id is 'Optional user ID (admin only)', providing meaning beyond the schema's type/optionality. However, with 1 parameter, this is minimal compensation; the baseline for 0 parameters would be 4, but here it only partially addresses the coverage gap.

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 states 'Get deployment logs for the range' which provides a clear verb ('Get') and resource ('deployment logs for the range'), but it doesn't differentiate from sibling tools like 'get_template_logs' or 'range_access_logs'. The purpose is understandable but lacks sibling distinction.

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 minimal guidance: it mentions 'admin only' for the user_id parameter, but doesn't explain when to use this tool versus alternatives like 'get_template_logs' or 'range_access_logs'. No explicit when/when-not instructions or prerequisites are given.

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