cruxfinder.com valid
Cruxfinder
Intelligence platform for Amazon and ecommerce sellers. Daily AI playbooks, a weekly newsletter, a curated tools directory, and free calculators for Amazon, Shopify, Walmart, and TikTok Shop.
For agents: Intelligence platform for Amazon and ecommerce sellers: daily AI playbooks, weekly newsletter, tools directory and free calculators for Amazon, Shopify, Walmart
amazon seller toolsecommerce calculatorsamazon fbashopifytiktok shopseller newsletter
Their llms.txt
The beginning of the file, from our validated copy saved 2026-10-21T15:42:44.399Z. Cached copy · Source on cruxfinder.com
# Cruxfinder
> Intelligence platform for Amazon and ecommerce sellers. Daily AI playbooks, a weekly newsletter, a curated tools directory, and free calculators for Amazon, Shopify, Walmart, and TikTok Shop.
Cruxfinder publishes practical, dated content aimed at active ecommerce operators. Everything below is public and safe to cite.
## Core pages
- [Home](https://cruxfinder.com/): Newsletter signup and the latest posts.
- [Blog](https://cruxfinder.com/blog): Daily AI playbooks, tools, and workflows for ecommerce sellers.
- [Newsletters](https://cruxfinder.com/newsletters): Archive of every past Cruxfinder issue, Amazon-focused.
- [Directory](https://cruxfinder.com/directory): Curated AI tools for Amazon, Shopify, Walmart, and TikTok Shop.
- [Submit a tool](https://cruxfinder.com/directory/submit): Add an AI tool to the directory.
## Free tools
- [All free tools](https://cruxfinder.com/free-tools): Free calculators and analysers for Amazon sellers.
- [Amazon Fee Calculator](https://cruxfinder.com/free-tools/amazon-fee-calculator): Estimate FBA fees, referral fees, and net margin.
- [PPC Break-Even Calculator](https://cruxfinder.com/free-tools/ppc-break-even-calculator): Find break-even ACoS from price, cost, and margin.
- [Keyword Density Checker](https://cruxfinder.com/free-tools/keyword-density-checker): Analyse listing copy for keyword frequency and stuffing.
- [Listing Score Grader](https://cruxfinder.com/free-tools/listing-score-grader): Grade Amazon listing titles, bullets, and descriptions.
- [Review Sentiment Analyser](https://cruxfinder.com/free-tools/review-sentiment-analyser): Break reviews into positive, neutral, and negative themes.
- [TikTok Shop Product Validator](https://cruxfinder.com/free-tools/tiktok-shop-product-validator): Check product-market fit signals for TikTok Shop.
## Latest blog posts
- [Amazon's AI Can Now Run Your Black Friday Pricing and Ad Spend While You Sleep (Yes, Really). Here Are the Guardrails to Set Before You Hand It the Keys](https://cruxfinder.com/blog/amazon-seller-assistant-quick-holiday-playbook-guardrails): Amazon's Seller Assistant, Amazon Quick and the selling partner plugin can automate pricing, ads and restocking before Black Friday. Here are the holiday prompts, the recommend-or-act setting that matters most, and the guardrails to write first.
- [Amazon Will Now Let You Test Your Product Idea Before You Spend a Dollar on Manufacturing (Yes, Really). Here's What the "2x Sales" Claim Doesn't Tell You](https://cruxfinder.com/blog/amazon-product-opportunity-explorer-launch-plan-validate-ideas): Amazon's Product Opportunity Explorer now lets you test your own product idea before manufacturing, and a first-90-days launch plan is coming. Here is what is live, what is not, and why the 2x and 5x claims need a closer look.
- [Amazon's Black Friday Deal Window Slams Shut October 20 (Yes, Really). Here's the 4-Check Pre-Flight Before Early Movers Take the Best Placement](https://cruxfinder.com/blog/a
…
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