Cleanor Tools

创建者

Cleanor-Labsa month ago

Zero-auth hosted MCP for AI builders — 22 tools: image optimize/convert (WebP/AVIF/JPEG), QR, cited Cleanor Labs storage & image-format data, plus 18 deterministic dev utilities (hash, HMAC, UUID, JWT, JSON, regex, cron, datetime, color, diff…) LLMs get wrong. No API key.

# image-optimization

# qr-code

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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.
`hash`	SHA-1/256/384/512 hex digest of text.
`hmac`	Keyed HMAC signature (SHA family), hex or Base64.
`uuid`	UUID v4 (random) or v7 (time-sortable).
`base64`	Base64 encode/decode, UTF-8 + URL-safe.
`json_format`	Validate and pretty-print or minify JSON, optional key sort.
`jwt_decode`	Decode a JWT header + payload (no verification).
`regex_test`	Test a regex and return every match and captured group.
`cron_describe`	Explain a cron expression and list the next runs.
`unit_convert`	Length, mass, data, time, speed, temperature.
`datetime`	Current time or a timestamp in any IANA timezone.
`url_parse`	Break a URL into scheme, host, path, query, fragment.
`base_convert`	Integers between bases 2–36 (BigInt-exact).
`diff`	Line-by-line diff of two texts with a change count.
`color`	Convert a color between hex, RGB and HSL.
`color_palette`	Harmonious palette from one base color.
`placeholder_image`	Sized SVG placeholder with a label and colors.
`slugify`	Clean, URL-safe slug from a title.
`count`	Exact characters, words, lines and UTF-8 bytes.

The first four are image + cited-data tools; the remaining 18 are deterministic developer utilities for the operations LLMs get wrong. All 22 tools are read-only and safe to expose to autonomous agents.

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"
    }
  }
}

Stdio-only clients can run the server locally via npx — no bridge needed. Published on npm as @cleanor/mcp:

{
  "mcpServers": {
    "cleanor": {
      "command": "npx",
      "args": ["-y", "@cleanor/mcp"]
    }
  }
}

Local image optimization uses sharp (an optional dependency); the data and QR tools work regardless.

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.

Free browser tools: https://cleanor.app/tools
Original research / studies: https://cleanor.app/research

License

MIT © Cleanor Labs

Citation

If you use Cleanor MCP or its data, please cite it. Authored by Cleanor Labs, ORCID 0009-0005-4623-961X. The archived, citable version has DOI 10.5281/zenodo.21225551 (concept DOI, always resolves to the latest release).

服务器配置

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

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