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

Annotations already declare read-only, non-destructive, idempotent, and non-open-world behavior, so the safety profile is covered. The description adds a useful data-visibility constraint ('only data visible to the linked Market Brew account'), but it does not describe the return format or what 'availability' means operationally.

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 short sentences with no filler, and it front-loads the usage condition before the data-visibility note. The first sentence is somewhat boilerplate and repeats the title, but the overall structure is efficient.

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 tool with no output schema and an undocumented required parameter, the description should explain what the availability check returns and how askWidgetId is used. Instead it gives only a usage trigger and an account-visibility note, leaving the agent without enough context to interpret results or supply the ID confidently.

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?

The single required parameter askWidgetId has 0% schema description coverage, and the description never mentions it or explains its format or source. The schema provides only type information (string or number), leaving the parameter's meaning entirely undocumented.

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 restates the title (check Ask Widget availability) rather than explaining what the health check actually evaluates or returns. It does not distinguish the tool from siblings like get_ask_widget or list_ask_widgets, so an agent gets no concrete sense of the operation beyond the name.

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 gives a clear trigger: 'Use this when the user asks to check Ask Widget availability.' That is explicit context for invocation, though it provides no exclusions or guidance on when to prefer a sibling tool such as get_ask_widget.

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