set_modifier_property

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

The annotations provide idempotentHint=true, and the description does not contradict that. However, the description only adds the naming-convention note for properties; it does not disclose that setting a property overwrites the current value, what validation may occur, or what the operation returns on failure.

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 focused sentence with useful examples and no filler. It front-loads the verb and resource, then immediately clarifies the naming convention that an agent needs to know.

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 relatively simple setter with an output schema and idempotent annotation, the description is minimally workable. However, it is not fully complete: object and modifier identification semantics are undocumented, and there is no guidance about when to prefer sibling tools.

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 only clarifies the 'property' parameter by giving examples and noting Blender API names; it leaves 'object' and 'modifier' ambiguous about whether they are names, UUIDs, or something else. The 'value' parameter is partially covered by the schema's anyOf types, but not semantically.

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 verb 'Set' and the resource 'modifier property', and the examples of Blender API property names help clarify the domain. It is distinct enough from sibling tools like set_light_property or set_material_property because the resource is explicitly a modifier, though it does not explicitly contrast itself with those siblings.

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 explicit guidance on when to use this tool versus alternatives like batch_set_property or other set_*_property tools. It does not mention prerequisites such as the modifier needing to exist, nor does it exclude cases where another tool would be more appropriate.

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