add_solidify

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

With no annotations, the description must carry the behavioral disclosure; it does state that the operation adds a modifier and produces a thickness effect, which makes the mutating behavior explicit. However, it does not mention target-object requirements, whether repeated calls stack modifiers, or any side effects on the modifier stack, leaving the disclosure only at a basic level.

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 sentence with no filler and it is front-loaded with the tool's action. It is slightly under-sized relative to the six parameters and the lack of annotations, but it is not redundant.

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 six parameters, no output schema, and no annotations, one sentence is insufficient. It omits how the 'name' parameter identifies the target object, how offset direction works, modifier naming behavior, and which options are safe defaults for common use.

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 33%, so the description needed to compensate for the undocumented parameters. It adds no meaning for offset, use_rim, modifier_name, or use_even_offset; even the word 'thickness' is a loose restatement of the thickness parameter rather than a semantic explanation.

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 states a specific action ('Add'), a precise resource ('Solidify modifier'), and the intended outcome ('give a flat surface real thickness'). This clearly differentiates the tool from sibling modifiers like add_bevel or add_subdivision without needing to open the 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?

The phrase 'to give a flat surface real thickness' provides a clear context for when this tool should be chosen. It does not explicitly compare against add_modifier or other modifier tools, but the dedicated purpose is obvious enough that an agent can route to it.

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