set_smooth_shading

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

With no annotations, the description carries the full burden. It discloses the boolean semantics and that a confirmation dict is returned, but says nothing about side effects, whether existing custom normals/auto-smooth data is overwritten, undo behavior, or any permission requirements. Adequate but thin for a state-mutating operation.

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?

Front-loads the purpose, then the routing TIP, then args. Well structured and short. The trailing "Returns: Confirmation dict" is redundant given an output schema exists, which costs a little.

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 simple two-parameter tool with an output schema present, the description covers purpose, both parameters, and the key alternative. It lacks only side-effect/interaction detail (e.g., effect on custom normals or auto-smooth settings) to be fully complete.

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, and it does: it defines object_name and explains that smooth=True means smooth shading while False means flat. That adds meaning the schema's bare boolean/default do not convey. Minor gap in not noting that smooth defaults to true.

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 and resource ("Set smooth or flat shading on an object") and immediately names the sibling it competes with, shade_auto_smooth, so an agent can tell the two apart without opening either schema. The scope (per-object shading mode toggle) is unambiguous.

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 TIP gives explicit routing guidance: prefer shade_auto_smooth for production/hard-surface work because it smooths only within an angle threshold. That is a real alternative-with-condition statement. It stops short of a full 5 because it never states the positive case for using this tool (e.g., quick flat/smooth toggling on simple meshes).

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