Apple Notes MCP

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

Annotations indicate this is a non-read-only, non-destructive, closed-world tool, which the description doesn't contradict. The description adds minimal behavioral context by implying an 'append' operation that adds items without overwriting, but it lacks details on permissions, rate limits, or error handling, offering only basic value beyond annotations.

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 directly states the tool's function without unnecessary words. It's front-loaded and wastes no space, making it easy to parse quickly.

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 moderate complexity (2 required parameters, no nested objects) and the presence of an output schema (which handles return values), the description is minimally adequate. However, it lacks context on usage scenarios, parameter details, and behavioral nuances, leaving gaps in overall completeness.

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, the description doesn't explain the parameters 'id' or 'items' beyond what's implied by the tool name. It hints that 'items' are checklist items to append, but provides no details on format or constraints. This partially compensates for the low schema coverage but remains vague, aligning with the baseline expectation.

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 ('Append') and resource ('checklist items to a note'), making the purpose understandable. However, it doesn't distinguish this tool from sibling tools like 'notes.toggle_checklist' or 'notes.remove_checklist', which also manipulate checklists in notes, so it lacks sibling differentiation.

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. It doesn't mention prerequisites (e.g., needing an existing note), exclusions, or comparisons to tools like 'notes.toggle_checklist' or 'notes.remove_checklist', leaving usage context unclear.

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