Cleanor MCP server

What it does

Cleanor is a zero-authentication MCP server with 22 tools for image optimization, QR code generation, and deterministic developer utilities. It runs as a hosted HTTP endpoint or local npm package, providing read-only operations safe for autonomous agents.

• Optimize images from URLs and convert between formats (WebP, AVIF, JPEG) with configurable quality and dimensions.
• Generate QR codes and placeholder SVG images for use in documents or applications.
• Perform reliable hashing, encoding, UUID generation, and JSON formatting tasks that language models typically get wrong.

Tools this server exposes

Tool	Does
optimize_image	Fetches an image from a public URL and re-encodes it to a smaller size in WebP, AVIF, or JPEG format.
placeholder_image	Generates a dependency-free SVG placeholder image at specified dimensions with custom colors and text label.
qr_code	Encodes text or URLs as SVG QR codes with configurable error correction and size.
storage_capacity	Calculates how many photos or video minutes fit in a storage tier, accounting for OS and filesystem overhead.
image_format_savings	Reports size reduction percentages for WebP, AVIF, and JPEG XL compared to JPEG at matched perceptual quality.
hash	Computes SHA-1, SHA-256, SHA-384, or SHA-512 hex digest of text input.
hmac	Generates keyed HMAC signatures in hex or Base64 format for webhook signing and verification.
uuid	Generates UUID v4 (random) or v7 (time-sortable) identifiers.
base64	Encodes or decodes Base64 strings with optional URL-safe alphabet support.
json_format	Validates, pretty-prints, or minifies JSON with optional deep key sorting.

Before you enable it

An MCP server runs with whatever access you give it. Start with a development account rather than production, and check which tools the server exposes before you let an agent call them unattended.