About The Prompt Index

The Prompt Index is a free-to-browse library of AI prompts, agent skills (SKILL.md files), image prompts and GPTs, together with a suite of 25 AI tools for writing, research, decisions, images, audio and slides. It is built and run by Stephen, its founder.

Stephen, founder

Stephen is the founder of The Prompt Index. He has a background in sales, data analysis and artificial intelligence, and built the site to help other people bring AI into their everyday work.

• Author page
• LinkedIn
• X (@Stephen_GPT)

What you can find here

• Prompt Database

  770+ prompts for ChatGPT, Claude, Gemini and other models, searchable and free to browse.

• Skills Database

  2,600+ SKILL.md files for AI agents such as Claude Code and OpenAI Codex.

• Image Prompts

  Prompts for AI image generators, with example images.

• GPT Database

  A directory of custom GPTs.

• AI Tools Directory

  A directory of third-party AI tools, separate from the tools we build ourselves.

• AI Toolbox

  Our own 25 tools, including PromptBook, the Writing Assistant, Decision Lab, Slide Studio and the AI Humanizer.

• AI Courses

  29 courses on prompting, agents, automation and AI-assisted creative work.

• Blog

  Guides and write-ups on prompting, AI agents, skills and new research.

How it works, and what to keep in mind

• Browsing the prompt, skill, image and GPT libraries does not need an account. The tools have Free, Basic and Pro plans with different usage limits; see the plans page.
• Community members can submit prompts, images and tools. Submissions are screened before they are listed.
• The Prompt Index is about AI, and most of its tools use AI models. AI output can be wrong. Check anything important against the primary sources each guide links to.
• Prompts are shared as working starting points. Results depend on the model and the task, so test a prompt before you rely on it.

Editorial, AI-use and corrections policy

• Who writes it. Guides on The Prompt Index are published under Stephen's name. Prompts, images and tools submitted by community members are screened before they are listed.
• AI use. The site is about AI and uses AI models in most of its tools. AI output can be wrong, so facts that matter should be checked against the primary sources each guide links to.
• Corrections. If you find an error, outdated information or a broken link, tell us through the contact form and name the page. Factual errors are corrected when they are confirmed.
• Last reviewed. This page was last updated on 25 October 2026.

Get in touch

Questions, corrections, partnership or press enquiries: use the contact form. You can also follow @ThePromptIndex on X or join the Telegram community. Our privacy policy and terms of service explain how accounts and data are handled.

Quick answers

What is The Prompt Index?

A library of AI prompts, agent skills, image prompts and GPTs, plus a set of AI tools, at thepromptindex.com.

Who is behind it?

Stephen, the founder. See the author page.

Is it free?

Browsing the libraries is free. The tools have a free tier with usage limits, and paid Basic and Pro plans raise those limits.