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

Annotations already declare readOnlyHint=false, destructiveHint=false, and idempotentHint=false, so the write/safe profile is covered. The description adds nothing beyond those hints: it does not say whether duplicate comments are allowed, what permission is needed, or what the call returns, despite non-idempotent creation being exactly the case where that matters.

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?

Two short sentences with the action front-loaded and the identification requirement second. The second sentence largely restates what the schema already says about board_id and task_number, so it is useful but not fully earning its place.

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?

No output schema exists, yet the description never indicates what is returned after a comment is created (e.g., new comment id), which matters for a non-idempotent create. Otherwise it is sufficient for a simple three-parameter tool backed by complete schema descriptions and annotations.

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%, so all three params are documented in structured data and a 3 is the baseline. The description contributes only the relational hint that board_id + task_number jointly identify the task, which is mild added value.

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?

States a concrete verb and resource ('add a comment to a specific task'), which is clearly distinct from delete_comment and list_comments. It stops short of naming those siblings explicitly, so an agent must infer the boundary rather than being told.

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?

Usage is implied by 'Use this to add a comment to a specific task' plus identification guidance for the target task. There is no statement of when not to use it, no prerequisites (e.g., membership on the board), and no reference to the competing tools (delete_comment, list_comments).

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