We build AI automation and websites for small businesses, and the same questions keep coming up on client calls. So we turned four of them into free, single-file browser tools on Hugging Face. No signup, no backend, nothing stored.
1. AI Crawler robots.txt Checker
The problem: "AI crawlers" are not one thing. Some collect training data (GPTBot, ClaudeBot, CCBot), some build AI search indexes (OAI-SearchBot, Claude-SearchBot, PerplexityBot) and some fetch a page because a user asked (ChatGPT-User, Perplexity-User). Blocking the wrong one can quietly remove a site from AI answers.
The checker parses a pasted robots.txt the way major crawlers do (RFC 9309: most specific user-agent group wins, longest matching rule wins, Allow wins ties, * and $ wildcards) and evaluates 27 crawlers. It then generates a policy for one of three stances: get cited but opt out of training, allow everything, or block AI while keeping Google and Bing.
👉 https://huggingface.co/spaces/313Automations/ai-crawler-robots-checker
The crawler list is also an open dataset with the operator's documentation linked on every row: https://huggingface.co/datasets/313Automations/ai-crawler-user-agents
2. llms.txt Generator
Fill in a name, a one-line summary, key facts and your important pages, and it outputs a valid llms.txt (H1, blockquote, details, H2 link sections, Optional) with checks for missing names and non-https links.
We were honest on the page: Google has said Search doesn't use llms.txt, and no major AI search engine has confirmed it as a ranking or citation signal. It is cheap to add and can help agents navigate, but it is not a substitute for crawlable, clear content.
👉 https://huggingface.co/spaces/313Automations/llms-txt-generator
3. Automate or Hire Calculator
Hours per week, loaded hourly cost, the share automation can handle, build and running cost. It returns two-year cost for both paths, monthly saving, payback and a five-question fit check, then recommends automate, hybrid or hire.
👉 https://huggingface.co/spaces/313Automations/automate-or-hire-calculator
4. AI Missed-Call Responder ROI Calculator
Calls per month, missed rate, share that are new enquiries, conversion, customer value and margin. It shows revenue at risk, what an instant text-back or AI receptionist could win back, and compares profit (not revenue) with the monthly cost.
👉 https://huggingface.co/spaces/313Automations/missed-call-roi-calculator
How they're built
Each tool is one self-contained index.html on a static Hugging Face Space: inline CSS with light and dark themes, vanilla JS, WebApplication JSON-LD, and no external requests. View the source under Files on any Space.
We also published three more datasets: a GEO prompt library (125 buyer questions across 25 industries), 30 SMB workflow automation templates and 45 FAQ/FAQPage examples for service businesses.
Everything lives here: https://huggingface.co/313Automations
What should we build next? Ideas welcome in the comments.
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