Promptly.build

Promptly.build came from the early days of AI and prompting, back when a prompt that reliably worked was worth writing down and passing around. It was a community library of exactly that. Instead of starting from a blank chat box every time, you searched the library, copied a prompt that fit, and ran it. Every prompt had a page of its own with the full text, tags, an author, upvotes and a description explaining when to reach for it and how to fill in the placeholders.

• Searchable, tag-filtered library of prompts covering images, writing, summarising, product work and small business tasks
• One-click Copy prompt, or Run with ChatGPT to open the prompt straight in a new chat
• A personal promptlist for saving the prompts you keep coming back to
• Publish your own prompts, public or private, and manage them from a dashboard with edit, delete and vote counts
• Upvotes and per-author attribution, so the prompts that actually earn their keep rise to the top
• Share links for any single prompt, plus a blog with longer guides on things like styleguides for on-brand images and why a site should ship an llms.txt

The three prompts below are a fair sample of what the library was for: a JSON styleguide that keeps generated images on brand, an llms.txt generator for making a site legible to AI tools, and a plain-language summary of terms and conditions nobody wants to read.