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TidyTools Free Web Data
io.github.tidytools/tidytools-free in the official MCP registry.
Endpoint https://tools.yukai.uk/mcp.
The registry describes it as: 45 free keyless web tools: AI extract, OCR, transcribe, SEO, DNS, contacts. Strict daily limits.
We read its 45 tools on 2026-10-22. Nothing in them matched our tool-poisoning rules. It also sets server instructions, text a client puts in front of the model on connect; those were read too.
A clean read means these rules found nothing, not that the server is harmless. A server can change its tools at any time, which is why the index reads it again every week.
Tools it advertises
read_url check_ai_crawler_access find_tidytools_tool link_preview detect_techstack domain_whois domain_dns validate_email seo_audit extract_contacts company_enrich company_enrich_ai extract_article summarize_article ocr_image screenshot_url pdf_url smart_fetch price_check domain_authority traffic_rank referring_domains domain_overview jobs_detect find_one_job app_store_details app_store_review play_store_details find_one_place enrich_one_place resize_image convert_image compress_image remove_image_background upscale_image ai_extract classify_text summarize_url transcribe_audio translate_text embed_text describe_image seo_browser_audit http_status convert_html
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The badge reflects the latest weekly read: 
[](https://lazaretto.dev/mcp-registry/io-github-tidytools-tidytools-free)How this was checked
Lazaretto connects to the endpoint the way any MCP client does, asks the server to introduce itself and list its tools, and reads every name, description, parameter schema and server instruction for tool poisoning: hidden directive blocks, orders to read local secrets, parameters built to carry secrets or the conversation out, orders that redirect another server's tools, and invisible characters. It never calls a tool. What we found across the registry.
To run the same check every time Claude Code adds a server, install the free lazaretto-guard plugin. Browse every server in the index.