Render a flat 2D PNG preview of a texture to visualize its pattern and colors before 3D printing.
Render a flat 2D preview of a texture as a PNG image.
| Name | Required | Description | Default |
|---|---|---|---|
| seed | No | Default: 42. | |
| size | No | Default: 512. | |
| scale | No | Default: 1.0. | |
| style | No | Default: "posterized". | |
| preset | No | ||
| texture | No | ||
| image_path | No | ||
| num_colors | No | Default: 4. | |
| output_path | No | Default: "". | |
| tile_size_mm | No | Default: 40.0. | |
| color_palette | No |
Changes observed during successful MCP inspections.
v1.5.0Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries the full behavioral-disclosure burden, yet it only says the tool renders a PNG. It does not say whether it writes a file, where output goes by default, whether input texture/image is required, whether it is read-only, or what side effects occur.
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 front-loaded sentence with no filler. It is efficient, though its extreme brevity contributes to under-specification for an 11-parameter rendering tool.
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 an 11-parameter tool with no annotations and no output schema, one sentence is not enough. It does not explain parameter behavior, input requirements, output location, or how this preview differs from other rendering/texturing 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?
There are 11 parameters and only 64% schema description coverage, with several parameters having no descriptions at all. The tool description adds no meaning for texture, preset, image_path, output_path, color_palette, or the rendering controls, so it does not compensate for the schema gaps.
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 uses a specific verb and resource: "Render a flat 2D preview of a texture as a PNG image." It clearly distinguishes this as a 2D texture preview and states the output format, though it does not name sibling alternatives such as apply_image_texture or render_model_preview.
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 implies the tool is for previewing a texture, but it gives no explicit when-to-use guidance, no exclusions, and no alternatives among the many texture and preview-related sibling tools. An agent must infer usage from the tool name and one-sentence purpose.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.