C-GPT

overview

C-GPT is a free ChatGPT assistant that answers marketplace selling questions — listing copy critiques, pricing positioning, keyword targeting, and conversion diagnostics for Amazon, eBay, Etsy, and Walmart sellers. It's aimed at solo operators and small marketplace teams who need a second opinion before pushing a listing live, but lack the budget for a dedicated consultant or full-stack marketplace optimization platform. Output quality depends on how specifically you frame the listing context in your prompt.

what it does

• Generates listing copy feedback tuned to marketplace ranking factors
• Suggests pricing positioning against category benchmarks via prompt context
• Reviews titles and bullets for keyword coverage and clarity
• Answers ad-hoc questions on Amazon, eBay, Etsy strategy
• Runs free inside ChatGPT with no separate account required