prompster

prompster

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Introduction
Slash commands for AI chat apps
Listed on
July 22, 2026
Browser ExtensionAI Plugins & ExtensionsAI Browser Extensions

What is prompster?

Prompster is a browser extension that adds slash commands to AI chat applications. It allows users to type '/' followed by a prompt keyword to instantly insert saved prompts directly into the chat box, without breaking their flow. It supports popular chat apps like ChatGPT, Gemini, Claude, and Grok, and includes a built-in prompt library with the ability to add custom prompts.

How to use prompster?

  • Install the extension from the Chrome Web Store. Type '/' in a supported chat app to trigger the slash command menu. Select a prompt keyword to insert a saved prompt. Create custom prompts and keywords via the extension's options. Use variables like [topic] for dynamic placeholders, and configure the trigger character as needed.

Core features of prompster

  • Slash-command prompt insertion directly inside supported chat apps
  • Custom prompts and keywords
  • Variable placeholders for complex prompt templates
  • Configurable trigger character
  • Built-in prompt library

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