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

Annotations already declare the safety profile (write, non-idempotent, non-destructive, closed-world), so the lower bar applies. The description adds the artifact structure (columns and task cards) and the fact that it returns a management link, but says nothing about permissions, limits, or how the brief is interpreted — modest added value over the 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?

Three short sentences with no filler; the usage trigger is front-loaded, the return note is brief, and the sibling routing comes last. Every sentence carries information an agent needs.

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 two-parameter creation tool with full schema coverage and an output schema that already describes the returned board and link, the description is nearly complete — purpose, trigger, and alternative all present. The only gap is the near-total silence on behavioral constraints, which the annotations largely cover.

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 both parameters are already documented and the baseline of 3 applies. The example ('a board to plan our product launch') illustrates the kind of brief expected, but adds no detail about format or length beyond the schema's own 'topic, brief, or outline'.

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 specific verb (create/build) and a well-defined resource — a Kanban board with columns and task cards built from a brief — and gives a concrete example. It explicitly distinguishes itself from add_task, so an agent can route without opening either schema.

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?

Begins with an explicit trigger ('Use this when the user wants a new Kanban board... built from a brief') and resolves the most likely confusion with a named alternative ('To add a single task to an existing board, use add_task'). The when-to-use condition and the when-not condition are both stated.

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