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PicToSTL

Official registry Media and design

MCP server for pictostl.com image-to-3D generation

Source code Website Documentation

Install

Add this to your client's MCP configuration (Claude Desktop: claude_desktop_config.json; Cursor: .cursor/mcp.json; VS Code and others use the same "mcpServers" shape).

NPM package pictostl-mcp
Claude Code 
claude mcp add pictostl -e 'PICTOSTL_API_KEY=<your pictostl_api_key>' -e 'PICTOSTL_API_BASE=<PICTOSTL_API_BASE>' -- npx -y pictostl-mcp@0.1.0
JSON configuration (Claude Desktop, Cursor, VS Code) 
{
    "mcpServers": {
        "pictostl": {
            "command": "npx",
            "args": [
                "-y",
                "pictostl-mcp@0.1.0"
            ],
            "env": {
                "PICTOSTL_API_KEY": "<your pictostl_api_key>",
                "PICTOSTL_API_BASE": "<PICTOSTL_API_BASE>"
            }
        }
    }
}

Environment variables

  • PICTOSTL_API_KEY required secret PicToSTL API key. Create one at https://pictostl.com/api-keys
  • PICTOSTL_API_BASE Optional override for the PicToSTL API base URL

Documentation

From the project's README on GitHub, refreshed weekly. Links open on GitHub.

Contents
  1. pictostl-mcp
  2. Architecture and data flow
  3. Get an API key
  4. Install from GitHub
  5. Claude / Cursor config
  6. Tools
  7. Contributing
  8. License

pictostl-mcp

Local stdio MCP server for pictostl.com. Generation runs on pictostl.com — this package uploads photos, starts 3D jobs, and writes GLB or STL files on the machine that hosts the MCP server.

Results are AI-reconstructed meshes for visualization and 3D printing experiments. They are not engineering drawings.

This is a local stdio MCP server distributed from its GitHub repository. pictostl.com does not host a remote MCP HTTP endpoint.

Architecture and data flow

MCP client → local pictostl-mcp process → pictostl.com API
                                      ← generation status and GLB
MCP client ← local GLB/STL file       ←

The MCP process runs locally and communicates with https://pictostl.com over HTTPS. Images, generation parameters, and the API key are sent to pictostl.com to upload inputs, create jobs, and retrieve results. GLB-to-STL conversion and final file writing happen locally on the machine running the MCP server.

There is no hosted PicToSTL MCP endpoint. MCP clients start this package locally over stdio; the local process then calls the hosted PicToSTL API.

Get an API key

  1. Sign up
  2. Create a key at API keys
  3. Buy credits on Pricing

By using the API or this MCP server you agree to the Terms of Service.

Website browser generation is separate from MCP. MCP always uses an API key.

Install from GitHub

Requires Node.js 20 or newer. The command below installs the repository through npm's Git support and runs its committed JavaScript build. It does not require a published npm package or a local TypeScript compiler.

Claude / Cursor config

{
  "mcpServers": {
    "pictostl": {
      "command": "npx",
      "args": [
        "-y",
        "--package=github:qduoduo-hwh/pictostl-mcp",
        "pictostl-mcp"
      ],
      "env": {
        "PICTOSTL_API_KEY": "ps_live_..."
      }
    }
  }
}

Set PICTOSTL_API_KEY to a live key from https://pictostl.com/settings/api-keys.

Optional: PICTOSTL_API_BASE (default https://pictostl.com) for a local website.

Keep the API key in your MCP client's secret or user-level configuration. Do not commit a live key to source control.

For a pinned installation, append a Git tag or commit after the repository name, for example github:qduoduo-hwh/pictostl-mcp#v0.1.0.

Local development
git clone https://github.com/qduoduo-hwh/pictostl-mcp.git
cd pictostl-mcp
corepack enable
pnpm install --frozen-lockfile
pnpm build

Then configure the MCP client to run node with the absolute path to dist/index.js as its first argument.

Tools

Seven MCP tools:

ToolPurpose
list_generation_optionsQuality, texture, multi-view rules, and credit costs
upload_imageUpload a local file or HTTPS URL; returns assetId
generate_modelStart an async 3D job (sends clientRequestId even if you omit it)
get_taskFetch a generation by task id; optional waitSeconds (max 60)
list_my_generationsList recent generations for this API key
get_accountRemaining credits and Pro / Ultra paid-credit status
download_modelWrite original GLB, or a local binary STL, to a path

Typical flow: upload_image → generate_model → get_task (repeat with the same task id if it takes more than 60 seconds) → download_model with that task id.

Do not pass an upload assetId to get_task or download_model.

download_model default is format=stl, longest edge 100 mm, converted locally from the original GLB (not the website preview mesh). STL has geometry only — no color or textures. format=glb writes the original file unchanged.

Reuse clientRequestId from a previous generate_model result when retrying the same job.

Contributing

Improve tool descriptions so agents call the right tool with the right fields. Do not ask for internal fal prompts or provider payloads.

License

MIT

Frequently asked questions

What is PicToSTL?

MCP server for pictostl.com image-to-3D generation

How do I install PicToSTL?

It runs on your machine. In Claude Code: claude mcp add pictostl -e 'PICTOSTL_API_KEY=<your pictostl_api_key>' -e 'PICTOSTL_API_BASE=<PICTOSTL_API_BASE>' -- npx -y pictostl-mcp@0.1.0. For other clients, paste the JSON configuration from this page into their MCP settings.

Does PicToSTL need an API key?

Yes. It expects PICTOSTL_API_KEY, which you set in its configuration.

Is PicToSTL open source?

Yes. Its code is on GitHub under the MIT license.

Who maintains PicToSTL?

It is published by qduoduo-hwh. AI.tn lists it but does not maintain or endorse it.

From the official MCP Registry. Listing is not an endorsement: review a server's code and permissions before giving it access to your data.