Prompt Magnus Pro icon

Prompt Magnus Pro

by arvinsdelrosario@gmail.com · Tools
Manifest V3 in_app
View in Chrome Web Store Data as of 16 Oct 2026

Premium prompt library for saving, organizing, and injecting reusable prompts into leading AI chat apps.

Users
536
+6 in 30 days
Rating
5.0 / 5
unchanged in 30 days
Ratings
6
0 in 30 days
Store rank
#42K
#35K among extensions
Version
0.2.3
updated 28 May 2026

Users

monthly, 6 months
100336571May 2026Aug 2026Oct 2026
Latest, 16 Oct 2026: 536 usersMove the mouse over the chart for any month

Ratings count

monthly, 6 months
146May 2026Aug 2026Oct 2026
Latest, 16 Oct 2026: 6 ratingsMove the mouse over the chart for any month

The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.

About Prompt Magnus Pro

Chrome Web Store resubmission draft Short description Prompt library and workflow runner for AI chat apps, with local-first storage and optional Pro features. Single purpose description Prompt Magnus Pro has one single purpose: helping users save, organize, and reuse prompts and simple prompt-driven workflows directly inside supported AI chat websites. Detailed description Prompt Magnus Pro helps users save, organize, and reuse prompts without leaving the AI chat tab. It adds an in-page library, popup runner, keyboard picker, and workflow tools so repeatable prompt-based work is faster and easier to manage. Core features - Save reusable prompts with titles, descriptions, tags, categories, pinning, and default actions. - Insert prompts into the active composer, append to existing text, or insert and send. - Open a searchable `//` prompt picker directly from supported chat inputs. - Use `%N` numeric shortcuts for faster prompt expansion. - Build and run simple multi-step workflows that send steps in order. - Use Smart Variables to fill placeholders before running a prompt or workflow. - Import and export prompt libraries as JSON for backup or migration. - Add image attachments to prompts and workflow steps. - Keep conversation notes inside supported AI chat apps. - View recent local diagnostic event logs for failed or interrupted runs. Supported apps - ChatGPT - Claude - Gemini - DeepSeek Access and licensing - ChatGPT is the default supported experience. - Support on Claude, Gemini, and DeepSeek requires an active Prompt Magnus Pro license in the current codebase. - Smart Variables are also gated behind Pro in the current codebase. What the extension accesses on supported sites - The active chat composer so it can insert or append saved prompt text. - Send-state and generation-state elements so it can confirm prompt insertion, optional sending, and workflow progress. - Attachment controls when the user chooses to use image attachments. - Page elements needed to place the extension's own sidebar, popup-driven actions, notes drawer, and floating button. How data is stored - Prompt library data is stored locally in extension storage. - Small settings may also be mirrored in Chrome sync storage. - Local diagnostic event logs are stored in extension storage until cleared by the user. - Local note drafts and UI state are stored in extension storage. - Attachment metadata is stored in extension storage, and local image attachment blobs are stored in the extension's local asset store. When Prompt Magnus connects to its backend - When the user verifies a license, the extension sends the license email, license key, and extension version to the Prompt Magnus license endpoint. - When a verified license session is available, the notes feature can save and load conversation notes from the Prompt Magnus backend. - The codebase also includes authenticated remote library and attachment backup paths. If those flows are used, saved library data and uploaded image attachment assets may be transmitted to the Prompt Magnus backend. What Prompt Magnus does not do - The current codebase does not include advertising, analytics, or tracking SDKs. - It does not request broad permissions such as tabs, history, cookies, or webNavigation. - It does not sell user data. - It does not use saved prompts, notes, or attachment content for advertising. - It does not use saved prompts, notes, or attachment content to train AI models. Transparency note Any prompt text the user chooses to send is submitted to the AI site they are actively using. Users should avoid sending sensitive information unless they are comfortable with that provider's policies.

Growth

WindowUsersChangeRatingsRating
7 days−15−2.7%00.00
30 days+6+1.1%00.00

Chrome Web Store search rankings

Where Prompt Magnus Pro appears when people search the store, with the 30 day change
Search phrasePosition30 days
purpose#79+2
deepseek sidebar#79−3
prompt#94new

Version history

4 versions recorded
0.2.328 May 2026
0.2.213 May 2026
0.2.16 May 2026
0.2.03 May 2026

Details

Category
Tools
First seen
3 May 2026
Size
520 KB
Languages
en
Pricing
in_app
Privacy policy
docs.google.com
Extension ID
ehngadbgmmdgjgfppamefeaeljfhabab

Permissions and risk

Elevated riskimpact 4, likelihood 2
Permissions
storagecontextMenus
Site access
https://chat.openai.com/*https://chatgpt.com/*https://claude.ai/*https://gemini.google.com/*https://www.deepseek.com/*https://chat.deepseek.com/*

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