Amazing Marvin MCP

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

With no annotations provided, the description carries full burden for behavioral disclosure but offers minimal information. It states this creates projects and tasks, implying a write/mutation operation, but doesn't cover permissions, side effects, error handling, rate limits, or what the output contains. This leaves critical behavioral aspects undocumented for a tool that performs creation operations.

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 at just 7 words, front-loading the core purpose without unnecessary elaboration. Every word contributes directly to explaining what the tool does, making it efficient for quick understanding.

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?

For a creation tool with 4 parameters, 0% schema coverage, no annotations, and multiple sibling alternatives, the description is insufficiently complete. While an output schema exists (which reduces the need to describe return values), the description doesn't address when to use this tool, what the parameters mean, or behavioral aspects like permissions and side effects, leaving significant gaps for agent understanding.

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?

With 0% schema description coverage and 4 parameters, the description adds minimal value beyond the schema. It mentions 'multiple tasks' which hints at the 'task_titles' array parameter, but doesn't explain what 'project_type' or 'debug' do, nor does it provide context about required vs optional parameters. The description fails to compensate for the complete lack of schema descriptions.

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 clearly states the action ('Create') and resource ('a project with multiple tasks'), making the purpose understandable. However, it doesn't distinguish this from the sibling 'create_project' tool, which appears to create projects without tasks, leaving some ambiguity about when to choose one over the other.

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 like 'create_project' or 'batch_create_tasks'. It mentions creating multiple tasks at once, but doesn't specify scenarios, prerequisites, or exclusions that would help an agent make the right choice among sibling tools.

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