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

The annotations already declare the operation as non-read-only, destructive, open-world, and non-idempotent. The description adds useful context about the destination panel and plain-text nature, but it does not explain destructive implications, permissions, or what happens to existing board content. With annotations covering the safety profile, this is adequate but thin.

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 compact sentence with no wasted words and the destination is front-loaded. Its brevity is appropriate for a low-complexity add operation, though it leaves it under-specified rather than overlong.

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 two required parameters, full schema coverage, and annotations that disclose the destructive/non-idempotent behavior, the definition is minimally complete. It still lacks usage context and does not clarify post-add behavior or restrictions, leaving clear but non-critical gaps.

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?

Schema description coverage is 100%, and the schema explains both parameters, including that board_id comes from list_boards or a board URL and that each text line becomes a paragraph. The description adds no additional parameter semantics, so baseline 3 applies.

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 names a specific resource (note card) and destination (board's Unsorted panel), making the effect clear. It stops short of explicitly differentiating this from edit_note or other add_* siblings, so it is clear but not fully sibling-aware.

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?

It implies that this tool creates a plain-text note card in the Unsorted panel but gives no guidance on when to use it instead of edit_note, add_comment, add_todo_list, or other sibling tools. No exclusions or prerequisites are stated.

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