InjectGPT

Unknown author · Tools

Open in Chrome Web Store

Users

651

Avg rating

3.4

Ratings

Updated

Mar 10, 2026

Media

2 items

Description

Inject your custom system and developer prompt. Also lets you change the model and hardcode it! This extension lets you override the System prompt of OpenAI's model ChatGPT. You can change the system prompt, developer prompt and model as you like. This also works with no account. You can set your system prompt and it will always remember it, also with completely new chats. It intercepts on the network level and injects the system prompt automatically.

History

30d 90d 1y all

rating_count is the Chrome Web Store ratings count, not a written-review count.

Details & SEO

SEO signals

Listing completeness signals

Title length
Characters in the extension name.
9
Description length
Characters in the listing description.
456
Media assets
Screenshots and videos on the listing.
2
Has promo video
Whether the listing includes at least one video.
Yes
Languages
Declared language locales.
1
Developer website
Listing exposes a developer website URL.
No
Contact email
Listing exposes a contact email.
Yes
Keyword in name
Case-insensitive substring match in the name.
—
Keyword in description
Case-insensitive substring match in the description.
—
Keyword occurrences in description
Count of case-insensitive occurrences in the description.
—
Category user-count percentile
Share of same-category extensions with fewer users (null if unknown).
89.4

These are transparent listing completeness / keyword signals, not a prediction of Chrome Web Store search ranking.