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

Annotations already declare idempotentHint=true and readOnlyHint=false. The description adds the retry behavior (reuse UUID) and return values (key and URL), but does not disclose other behavioral traits like error handling or side effects beyond the basic creation. It provides some additional context but not rich detail.

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 two sentences, front-loaded with the core purpose. Every sentence earns its place, with no filler or redundancy.

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 has 2 parameters and an output schema, the description covers the core action and idempotency behavior but omits the purpose of the content parameter. While the output schema explains return values, the optional content parameter is left undefined. For a simple create tool, this is a moderate gap, but it is not severely incomplete.

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 0%, so the description must compensate. It explains the idempotency_key parameter (use a new UUIDv4 and reuse for retries) but says nothing about the content parameter. This leaves a required parameter (idempotency_key) partially explained and an optional parameter (content) completely unexplained.

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 tool creates a board and returns its key and URL. The verb 'Create' and resource 'board' are specific, but there is no explicit differentiation from sibling tools like 'append' or 'read'. The purpose is clear, though sibling distinction is implicit.

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 gives no guidance on when to use this tool versus alternatives. It only instructs on idempotency key usage, not on the appropriate context or exclusions. There is no mention of when not to use it or how it differs from 'read' or 'append'.

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