app.cleanor/cleanor

up checked 2026-11-11T09:37:58.984Z

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Publisher-provided title

Cleanor

Publisher-provided description

Zero-auth MCP: image optimize, cited storage/format data, and dev utilities LLMs get wrong.

Summary by lookupd

Provides dev utilities like encoding, hashing, diffs, regex tests, and image optimization, plus storage and format size data.

Install

Claude Code, remote (streamable-http)

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

Claude Code, npm package (stdio)

claude mcp add cleanor -- npx -y @cleanor/mcp

Codex, remote (streamable-http)

codex mcp add cleanor --url https://mcp.cleanor.app/mcp

Codex, npm package (stdio)

codex mcp add cleanor -- npx -y @cleanor/mcp

Cursor, remote (streamable-http) → .cursor/mcp.json

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

Cursor, npm package (stdio) → .cursor/mcp.json

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

Other clients: docs. Or tell your agent: Set up lookupd for me: read https://lookupd.com/agent.md and follow it.

Tools (22 tools)

Publisher-provided text

• optimize_image Fetch an image from a public URL and re-encode it smaller (WebP/AVIF/JPEG), optionally resizing to a target width. Returns the optimized image plus before/after
• storage_capacity How many photos or minutes of video actually fit in a given storage size, corrected for real OS/filesystem overhead. Backed by Cleanor Labs measured per-item si
• image_format_savings How much smaller WebP, AVIF or JPEG XL are than JPEG at matched perceptual quality, from Cleanor Labs’ controlled benchmark. Also reports the "HEIC conversion t
• qr_code Encode text or a URL as a QR code and return a crisp, dependency-free SVG you can paste straight into a page, deck or doc.
• hash Compute a cryptographic hash of text (SHA-1, SHA-256, SHA-384 or SHA-512) and return the hex digest. Use for checksums, cache keys, or verifying content. MD5 is
• uuid Generate one or more UUIDs. v4 is fully random; v7 is time-sortable (recommended for database keys). LLMs cannot produce cryptographically random or correctly-f
• base64 Encode text to Base64 or decode Base64 back to text (UTF-8 safe). Supports URL-safe alphabet. Use whenever you need to encode/decode data URIs, tokens, or confi
• json_format Validate JSON and pretty-print or minify it, optionally sorting object keys. Returns a precise parse error (with position) if invalid. Use to check and clean JS
• jwt_decode Decode a JSON Web Token into its header and payload so you can inspect claims (iss, exp, sub, scopes). The signature is NOT verified and no secret is required o
• color Convert a color (hex, rgb() or hsl()) and return hex, RGB and HSL representations at once. Use when picking or translating colors for CSS, design tokens or them
• slugify Turn a title or phrase into a clean, URL-safe slug (lowercase, hyphenated, accents stripped). Use when generating page paths, filenames or anchor IDs.
• count Accurately count characters (Unicode code points), UTF-16 units, words, lines and UTF-8 bytes in text. LLMs are notoriously bad at counting, so always use this
• regex_test Test a JavaScript regular expression against sample text and return whether it matches, plus every match with its captured groups and index. Use to verify a pat
• cron_describe Parse a standard 5-field cron expression (minute hour day-of-month month day-of-week) into a plain-English breakdown and the next few run times in UTC. Use to s
• unit_convert Convert a value between units of length, mass, data size, time, speed or temperature. Supported units: mm, cm, m, km, in, ft, yd, mi, nmi, mg, g, kg, t, oz, lb,
• datetime Get the current date/time, or convert a given timestamp, into a target IANA timezone with ISO, Unix and human-readable forms. Pass a Unix timestamp (seconds or
• url_parse Break a URL into its components: scheme, host, port, path, decoded query parameters and fragment. Use to inspect or debug a URL instead of parsing it by eye.
• base_convert Convert an integer between number bases 2–36 (e.g. hex to binary, decimal to base-36). Arbitrary precision via BigInt, so large values stay exact. Use for radix
• diff Compute a line-by-line diff between two texts, marking removed lines with "-", added with "+" and unchanged with two spaces, plus a change count. Use to see exa
• hmac Compute an HMAC (keyed hash) of a message with a secret, using SHA-1/256/384/512, returned as hex or Base64. Use to sign webhook payloads or verify a signature
• placeholder_image Generate a lightweight SVG placeholder image at any size, with an optional label and custom background/text colors. Dependency-free, pastes straight into a page
• color_palette Build a harmonious color palette from a base color using color-theory rules (complementary, analogous, triadic, tetradic, or monochromatic). Returns each color

Details

• Version: 0.6.1
• Transports: streamable-http, stdio
• Uptime (7 days): 100%
• Median latency: 786 ms
• First indexed: 2026-11-01T08:51:22.936Z
• Last seen in registry: 2026-11-01T08:51:23.006Z
• Repository: https://github.com/cleanor-app/cleanor-mcp
• Website: https://mcp.cleanor.app

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