prompster

Slash commands for AI chat apps

As of June 2026, prompster has 7,000 users and a 4.21/5 rating from 19 reviews in the Productivity category.

Usersdown 22.2 percent22.2%
7.0K
7,000
Ratingno change0%
4.21
19 reviews
Reviewsno change0%
19
Version
1.4.6
Manifest V3
90-day change · In the last 90 days this extension lost 2.0K users, 1 version update.

History

2 snapshots

Tracking since Apr 30, 2026.

9.2K8.0K6.8KApr 30, 2026Jun 16, 2026
View as table
DateUsersRatingReviewsVersion
Apr 30, 20269.0K4.21191.4.5
Jun 9, 20268.0K4.21191.4.6
Now7.0K4.21191.4.6

Changelog

  • Apr 30, 2026
    description
    Prompster supercharges your chat bot by offering instant access to almost 200 predefined prompts directly inside ChatGPT, Gemini, and more. Simply type '/', followed by the keyword for your prompt, hit 'tab' and the prompt is inserted into the input field without ever leaving the chat.
    
    Prompster also supports custom prompts. With just 2 clicks you can add your own prompts as slash commands to your library for instant access whenever you need. For more advanced use cases, you can enclose parts of your prompt with brackets [<variable>]. These are interpreted as variables and are dynamically filled when using the prompt.
    
    Currently all major chat bots are supported, including ChatGPT, Gemini, Claude, and more. To see all supported chat bots, visit this page: https://github.com/LucasAschenbach/prompster/discussions/5
    Prompster adds slash commands to AI chat apps.
    
    Type / and a prompt keyword to instantly insert saved prompts right inside the chat box, without breaking your flow. Prompster brings fast prompt autocomplete to ChatGPT, Gemini, Claude, Grok, and other popular chat apps.
    
    Prompster includes a built-in prompt library out of the box, and you can add your own prompts in a couple of clicks. Create personal shortcuts for recurring tasks, writing styles, code reviews, research prompts, translations, and more.
    
    For more advanced workflows, Prompster also supports prompt variables. Wrap part of a prompt in brackets like [topic] and fill it in when you use the command. It also supports handy dynamic values such as clipboard content and dates.
    
    Features:
    - Slash-command prompt insertion directly inside supported chat apps
    - Custom prompts and keywords
    - Variable placeholders for complex prompt templates
    - Configurable trigger character
    
    Go to the project homepage for a list of all supported Chat Apps: https://github.com/LucasAschenbach/prompster#supported-chat-apps
  • Apr 30, 2026
    short_description
    Slash Commands for ChatGPT and Bard
    Slash commands for AI chat apps

Permissions & access

Permissions
storageclipboardRead
Host access
None declared

Screenshots

prompster screenshot 1prompster screenshot 2prompster screenshot 3

About

Prompster adds slash commands to AI chat apps.

Type / and a prompt keyword to instantly insert saved prompts right inside the chat box, without breaking your flow. Prompster brings fast prompt autocomplete to ChatGPT, Gemini, Claude, Grok, and other popular chat apps.

Prompster includes a built-in prompt library out of the box, and you can add your own prompts in a couple of clicks. Create personal shortcuts for recurring tasks, writing styles, code reviews, research prompts, translations, and more.

For more advanced workflows, Prompster also supports prompt variables. Wrap part of a prompt in brackets like [topic] and fill it in when you use the command. It also supports handy dynamic values such as clipboard content and dates.

Features:
- Slash-command prompt insertion directly inside supported chat apps
- Custom prompts and keywords
- Variable placeholders for complex prompt templates
- Configurable trigger character

Go to the project homepage for a list of all supported Chat Apps: https://github.com/LucasAschenbach/prompster#supported-chat-apps

Technical

Version
1.4.6
Manifest
V3
Size
508KiB
Min Chrome
88
Languages
1
Featured
Yes

Metadata

ID
fbagfekcjdidpmmookklbaeddgkjddml
Developer ID
ue1e2f94786188ef1e64dc2c58998568f
Developer Email
[email protected]
Created
Apr 7, 2023
Last Updated (Store)
Apr 8, 2026
Last Scraped
Jun 16, 2026
Website
Support URL

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Data sourced from the Chrome Web Store · last verified Jun 16, 2026.