set_transparency

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

The description reveals that the tool works via alpha and blend mode, which is some behavioral insight beyond the tool name. However, given destructiveHint=true, it fails to disclose what is overwritten or how existing transparency settings are affected, and it does not mention irreversible changes or requirements for the material. This lack of transparency is a significant gap for a mutating tool.

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 concise sentence that is appropriately short and front-loaded with the core purpose. It avoids unnecessary elaboration, though it is arguably too terse to cover the necessary details. Nevertheless, it earns its place by conveying the essential function without redundancy.

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?

Given that this is a destructive mutation tool (destructiveHint=true) with zero schema property descriptions, the description is insufficiently complete. It does not explain why a user would choose this over other material tools, what the output or side effects are, or how to handle the existing material state. The presence of an output schema reduces the need to explain return values, but the description still lacks critical contextual information for safe and correct invocation.

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?

With 0% schema description coverage, the description must compensate for the parameters. It mentions 'alpha + metode blend' but does not explain units, valid values, default behavior, or the relationship between alpha and blend_mode. The description adds only minimal meaning beyond the raw schema fields, leaving the agent to guess at parameter semantics.

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 'Buat material transparan (alpha + metode blend)' clearly identifies the action (making a material transparent) and the resource (material), and the mention of alpha and blend mode helps distinguish it from sibling tools like set_color or set_emission. However, the verb 'Buat' could be interpreted as 'create' rather than 'set', introducing slight ambiguity about whether it creates a new material or modifies an existing one.

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 provides no guidance on when to use this tool versus alternatives such as create_material, assign_material, set_color, or set_emission. There is no mention of prerequisites (e.g., material must exist) or exclusions, leaving the agent without context for tool selection.

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