Cleanor MCP

Zero-auth, hosted Model Context Protocol server for AI builders.

Two things no popular MCP does well, in one server:

Actually optimize the images your AI just generated or a user dropped in (WebP / AVIF / JPEG, optional resize) — returns the smaller bytes plus before/after sizes.
Hand back real, cited Cleanor Labs research data — device storage capacity, next-gen image-format savings, and the "HEIC conversion tax".

No API key. No signup. Every response links its source on cleanor.app.

Endpoint (Streamable HTTP): https://mcp.cleanor.app/mcp
Official MCP Registry: app.cleanor/cleanor
Homepage: https://mcp.cleanor.app

Tools

Tool	What it does
`optimize_image`	Fetch an image URL → re-encode smaller (WebP/AVIF/JPEG), optional resize. Returns the optimized image + before/after bytes.
`storage_capacity`	How many photos / minutes of video fit in a given GB tier, corrected for real OS/filesystem overhead. Backed by the photo-storage-capacity study.
`image_format_savings`	How much smaller WebP / AVIF / JPEG XL are than JPEG at matched quality, plus the HEIC → JPG/PNG conversion tax. From Cleanor's controlled benchmark.
`qr_code`	Text or URL → a crisp, dependency-free SVG QR code you can paste anywhere.

All tools are read-only and safe to expose to autonomous agents.

Related MCP server: Stackbilt

Connect

Claude Code (CLI):

claude mcp add --transport http cleanor https://mcp.cleanor.app/mcp

Cursor (.cursor/mcp.json), Claude Desktop, VS Code, and most clients:

{
  "mcpServers": {
    "cleanor": {
      "url": "https://mcp.cleanor.app/mcp"
    }
  }
}

Older clients that only speak stdio can bridge to the remote server with mcp-remote:

{
  "mcpServers": {
    "cleanor": {
      "command": "npx",
      "args": ["-y", "mcp-remote", "https://mcp.cleanor.app/mcp"]
    }
  }
}

About

Built and hosted by Cleanor Labs — free, private, in-browser tools (files never leave your device) plus original research on device storage and image formats. The MCP server is a thin, hosted front door to that toolset and data for AI agents.