Amazing Marvin MCP

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. While 'Get' implies a read operation, the description doesn't specify what 'quick' means operationally (e.g., cached data, limited scope), what 'actionable insights' entail, whether there are rate limits, authentication requirements, or what the output format looks like. For a tool with zero annotation coverage, this leaves significant behavioral questions unanswered.

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 a single, efficient sentence that gets straight to the point without unnecessary words. It's appropriately sized for a simple tool, though it could potentially be more specific about what 'quick' and 'actionable insights' mean to improve clarity without sacrificing conciseness.

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 apparent simplicity (0 parameters, no output schema), the description is somewhat complete but inadequate. It doesn't explain what constitutes the 'overview' or 'insights', how this differs from other planning tools in the sibling set, or what the agent should expect as output. For a tool in a crowded namespace with many similar alternatives, more differentiation and behavioral context would be needed for proper agent usage.

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 tool has 0 parameters with 100% schema description coverage, so the baseline is 4. The description doesn't need to explain parameters since none exist, and it appropriately doesn't mention any. This meets expectations for a parameterless tool.

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 the tool's purpose as 'Get a quick daily planning overview with actionable insights', which provides a general sense of functionality (retrieving planning information). However, it lacks specificity about what resources or data are involved, and it doesn't clearly distinguish this from sibling tools like 'get_daily_focus', 'get_productivity_summary', or 'get_due_items' that might provide similar planning-related information.

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 offers no guidance on when to use this tool versus alternatives. With many sibling tools that could provide planning or productivity data (e.g., 'get_daily_focus', 'get_productivity_summary', 'get_due_items'), there's no indication of what makes 'quick_daily_planning' distinct or when it would be preferred over those other options.

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