Format JSON, hash strings, generate UUIDs, decode JWTs, check DNS, audit SEO - directly from Claude Desktop, Claude Code, Cursor, or Windsurf. No tabs to switch, no copy-paste.
Published on npm as @toolbox-kit/mcp-server. Pick your editor:
{
"mcpServers": {
"toolbox": {
"command": "npx",
"args": ["-y", "@toolbox-kit/mcp-server"]
}
}
}Restart your editor after saving. You should see the 27 ToolBox tools in the tool picker.
15 utilities run locally with zero network calls. 12 research tools hit the ToolBox REST API.
json_formatPretty-print with indent + key sortjson_minifyStrip whitespace from JSONbase64_encodeUTF-8 to base64 (optional URL-safe)base64_decodeBase64 back to UTF-8url_encodePercent-encode a stringurl_decodeDecode percent-encoded texthash_textMD5, SHA1, SHA256, SHA512 digestsuuid_generateUUID v4 or v7, 1 to 100 at onceslugifyURL-friendly slug with diacritic strippingcase_convertcamel, pascal, snake, kebab, constant, title, sentenceregex_testTest pattern, returns matches + groupstimestamp_convertUnix seconds/ms to ISO 8601jwt_decodeDecode header + payload (no verify)lorem_ipsumPlaceholder text by words/sentences/paragraphscolor_convertBetween hex, rgb, hsldns_lookupA, AAAA, MX, TXT, CNAME, NS + WHOISssl_checkCertificate issuer, expiry, days remainingheaders_checkHTTP response headers for any URLspeed_testPageSpeed Insights audit with Core Web Vitalscheck_linksStatus codes for up to 20 URLs at onceredirect_checkTrace the full redirect chainseo_analyzeFull SEO audit with score out of 100url_safety_checkSSL, redirects, domain pattern verdictog_fetchOpen Graph and Twitter Card meta tagsexchange_ratesCurrency rates, latest or historicalgrammar_checkGrammar via LanguageTooltranslateText translation via MyMemoryOnce installed, the AI picks the right tool from your plain English prompt.
The 15 local utilities run entirely inside the MCP server process on your machine. Nothing leaves your computer.
The 12 network tools send your input (the URL or domain you asked about) to toolbox-kit.com, which may proxy to third-party services (Google DNS, PageSpeed Insights, LanguageTool) as documented on each tool page. Source input you do not explicitly pass into a network tool stays local.
Install takes 30 seconds. ToolBox Pro supports continued development and keeps network tools fast.