Amazing Marvin MCP

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

With no annotations, the description carries the full burden of behavioral disclosure. It implies a read-only operation ('Get'), but doesn't specify permissions needed, rate limits, response format, or whether it returns real-time or cached data. This leaves significant gaps for a tool that likely involves user-specific data retrieval.

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 with a single phrase, front-loading the core purpose without unnecessary words. Every part earns its place, though it could benefit from more detail given the lack of annotations and schema coverage.

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 low complexity (one optional parameter) and the presence of an output schema, the description is minimally adequate. However, with no annotations and 0% schema description coverage, it doesn't fully compensate for missing behavioral and parameter context, making it incomplete for safe and effective 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?

There is only one parameter ('debug'), and schema description coverage is 0%, so the description must compensate. However, the description provides no information about parameters, leaving 'debug' entirely undocumented. Since there are 0 parameters relevant to the core function, the baseline is 4, but the lack of explanation for 'debug' prevents a perfect score.

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 kudos and achievement information' states the general purpose (retrieving recognition data) but lacks specificity about what 'kudos' and 'achievement information' entail. It distinguishes from siblings like 'get_account_info' or 'get_productivity_summary_for_time_range' by focusing on rewards/achievements, but doesn't specify the exact resource scope (e.g., user-specific, team-wide, historical).

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?

No guidance is provided on when to use this tool versus alternatives. It doesn't mention prerequisites (e.g., authentication), context (e.g., for viewing personal rewards), or exclusions (e.g., not for modifying data). The agent must infer usage from the name and sibling tools alone.

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