Description
The Prompt Index started as a prompt database and has grown into a bundle of AI tools sold as a single subscription. Its pitch is 24 AI tools in one workspace, covering research, writing, decisions, images, slides, audio and agents, with a member's work saved in one place instead of scattered across separate apps.
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The tools are grouped by job. Prompt Tools generate, optimize, share and organize prompts. Skills & Agents build AI skills, custom personas and multi-agent rooms, including a feature called Agentic Rooms that puts a panel of AI advisors on a decision. Writing & Documents covers an AI writing assistant, an AI humanizer, an AI detector, a CV builder, a PDF OCR tool and a note summarizer. Research & Analysis includes search and citation tools and a Decision Lab that turns a set of documents into an evidence-backed decision brief. Media & Creative covers image and sound generation plus a website-design tool called StyleForge. Learning & Study includes a study and flashcard tool and an AI slide-deck builder. Every plan includes the full suite; the plan sets how much of each tool a member can run.
Alongside the tools sits the original prompt database, now listed at more than 780 curated prompts for ChatGPT, Claude and Gemini, plus a Skills Database of more than 2,600 downloadable SKILL.md files for AI agents, and a set of 29 AI courses.
A free membership gives access to the database and tools at lower usage limits. Pro membership adds full AI Labs access, an unlimited Prompt Builder under a fair-use policy, 500 or more AI Writing Assistant uses, up to 1,000 AI Humanizer uses a month, unlimited private folders and priority support; new members can use a promo code for a free first month of Pro.
The Prompt Index is aimed at prompt engineers, AI power users and content creators who want a single subscription covering both a prompt library and a working set of AI tools, rather than a narrow, single-purpose product. The site states a community of more than 10,000 members.
- CategoryOther AI Tools
- Pricing ModelFreemium
- DeploymentCloud
- PlatformsWeb
The Prompt Index's Core Features
24 AI tools bundled under one subscription and one login
Database of more than 780 curated prompts for ChatGPT, Claude and Gemini
Skills Database of more than 2,600 downloadable SKILL.md files for AI agents
Agentic Rooms: multiple AI advisors work through a decision together
Decision Lab turns a set of documents into an evidence-backed decision brief
AI Writing Assistant and AI Humanizer for drafting and rewriting text
PromptBook tool for writing and publishing a full book
Image, sound and slide-deck generation tools
29 AI courses and a members leaderboard
How to use The Prompt Index?
Create an account: sign up for free to browse the prompt database and tool directory
Pick a tool: open one of the 24 tools, such as the Writing Assistant or Decision Lab
Use the prompt database: search curated prompts to jump-start a task
Upgrade to Pro: subscribe for higher usage limits across the Humanizer, Prompt Builder and other tools
Download skills: grab SKILL.md files from the Skills Database for your own AI agents
The Prompt Index's Use Cases
- Prompt discovery
- AI-assisted decision briefs
- Building AI agent skills
- Drafting and humanizing text
