Amazing Marvin MCP

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

With no annotations provided, the description carries the full burden of behavioral disclosure. It mentions the tool is 'experimental', which hints at potential instability or changes, but fails to describe key behaviors such as whether this is a read-only operation, what the output format looks like, if there are pagination or rate limits, or any authentication requirements. This leaves significant gaps for an agent to understand how to interact with it safely.

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—a single sentence with no wasted words—and front-loaded with the core purpose. Every part ('Get child tasks', 'of a specific parent task or project', '(experimental)') adds value, making it efficient and easy to parse.

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 read operation with 1 parameter), lack of annotations, and no output schema, the description is incomplete. It doesn't explain what 'child tasks' entail (e.g., nested subtasks, associated items), the return structure, or error conditions. For an 'experimental' tool, more context on limitations or expected behavior would be necessary for reliable agent 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?

The input schema has 1 parameter with 0% description coverage, so the description must compensate. It adds meaning by specifying that 'parent_id' refers to 'a specific parent task or project', clarifying the parameter's role beyond the schema's generic 'Parent Id' title. However, it doesn't detail the expected format (e.g., numeric ID, string) or constraints, leaving some ambiguity.

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 ('Get child tasks of a specific parent task or project') with a clear verb ('Get') and resource ('child tasks'), but it lacks specificity about what 'child tasks' means in this context and doesn't distinguish it from sibling tools like 'get_tasks' or 'get_completed_tasks'. The '(experimental)' tag adds some context but doesn't clarify the core functionality.

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 by implying usage when you have a 'parent task or project', but it doesn't specify when to use this tool versus alternatives like 'get_tasks' (which might retrieve all tasks) or 'get_completed_tasks' (which filters by status). No explicit when-not-to-use or prerequisite information is included.

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