update_area

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

With no annotations, the description carries full burden for behavioral disclosure, but it only states the mutation without explaining whether it partially updates fields, requires specific permissions, or affects existing properties. It provides no context about reversibility or response behavior.

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 vague sentence that is under-specified rather than concisely informative. While it is short, it lacks the structure to front-load any useful details, failing to earn its place beyond the tool name.

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 8 parameters and no output schema or annotations, the description is severely incomplete. It does not explain what an area widget is, how it differs from other widgets, or how the update behaves, leaving a large knowledge gap for the agent.

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 only 38%, and the description does not compensate by explaining any parameters. It mentions no parameter names or semantics, leaving the agent to infer meaning from property names like 'x', 'y', and 'width' without any additional context.

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 'Update an area on a mural' barely goes beyond the tool name itself, essentially restating the resource and operation without specifying what 'area' means or which properties can be updated. It lacks the specificity seen in sibling tools like update_sticky_note or update_shape, making it nearly tautological.

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?

No guidance is provided on when to use this tool versus alternatives such as update_shape or update_sticky_note. The description gives no context about widget types or differentiating use cases, so an agent gets no help selecting the correct tool.

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