fusion-reconstruct-mcp

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render_orthographic_views

Renders front, top, right, and isometric silhouette PNGs from a CAD file, enabling vision models to assess part geometry before reconstruction. Returns file paths for subsequent analysis.

Instructions

Render front/top/right/isometric silhouette views to PNG files so a vision-capable LLM can look at the part's overall shape before deciding how to reconstruct it. Returns paths, not image bytes - open them with a file-reading / vision tool.

Tool call template

Replace each placeholder with a value matching the input schema. Only required parameters are included; add optional parameters as needed.

{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "arguments": {
      "file_path": "<file_path>"
    },
    "name": "render_orthographic_views"
  }
}

Input Schema

Name	Required	Description	Default
`out_dir`	No
`file_path`	Yes

Schema Changelog

Changes observed during successful MCP inspections.

First observedv0.1.0Aug 21, 2026

TDQS

A4.1/5.0

Behavior4/5

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

With no annotations, the description carries the full burden. It explicitly states that the tool returns paths, not image bytes, which is a crucial behavioral trait not evident from the schema. It also clarifies the output is PNG files. It does not cover error conditions or side effects like file creation, but the key transparency point about output format is well disclosed.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is two concise sentences, front-loaded with the core action and purpose. The second sentence adds an essential note about return type. No fluff or redundancy, every sentence earns its place.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness4/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given the tool has no output schema and no annotations, the description covers the main aspects: what it does, output type, and intended use. It does not explain parameter details, but that is partially a param-spec issue. The description is sufficiently complete for a simple rendering tool, though it could mention that four separate files are produced.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters2/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 0%, and the description does not add any meaning to the parameters. It does not explain that file_path is the source CAD file or that out_dir controls output location. Since the parameter names are somewhat self-explanatory, but the description fails to compensate for the lack of schema descriptions, the score is low.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

Description clearly states the tool renders front/top/right/isometric silhouette views to PNG files, with the explicit purpose of helping a vision-capable LLM see the part's shape before reconstruction. This distinctly differentiates it from siblings like fusion_screenshot (likely a single view) and get_cross_section (cross-section, not silhouette).

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines4/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description provides clear context: use this tool to get an overview of the part's shape before reconstructing it. It also instructs to open the returned paths with a file-reading/vision tool. However, it does not explicitly mention when not to use it or mention alternative tools, so no exclusions are given.

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