Browser extension · Chrome MV3 · v0.1.0

See the Nerf Index before you commit.

Adds a live Nerf Index badge to the bottom-right corner of every AI vendor's pricing page. Color-banded by current risk. Updates as the vendor's profile changes. Click to dive into the full receipts.

18 supported vendor pricing pages on day one. Free, open-source, MIT.

Live preview

simulated cursor.com pricing page

NERF INDEX52SHRINKING

That's what users see when they land on a tracked vendor's pricing page. Click → opens the full receipts on gotnerfed.com.

Install (developer / unpacked)

The Chrome Web Store version is in submission. Until it's approved (typical review: 1-3 weeks), install the extension by loading it unpacked from the open-source repo. Takes 30 seconds.

Clone the repo (or download the chrome-extension folder):

git clone https://github.com/virtualunc/gotnerfed.git
cd gotnerfed/chrome-extension

Open Chrome → chrome://extensions
Toggle Developer mode on (top-right)
Click Load unpacked and select the chrome-extension/ folder
Visit any supported vendor's pricing page — badge appears bottom-right

Supported vendor pricing pages

Cursor
cursor.com
Claude (Anthropic)
anthropic.com
ChatGPT (OpenAI)
openai.com
GitHub Copilot
github.com/features/copilot
Perplexity
perplexity.ai
Midjourney
midjourney.com
Gemini (Google)
gemini.google.com
v0 (Vercel)
v0.app
Windsurf
windsurf.com
Replit
replit.com
Lovable
lovable.dev
Bolt.new
bolt.new
Runway
runwayml.com
ElevenLabs
elevenlabs.io
Suno
suno.com
Notion AI
notion.com
Grok (xAI)
x.ai
DeepSeek
platform.deepseek.com

Don't see a vendor? Open an issue with the URL pattern.

Permissions + privacy

storage — reserved for v1 features (user dismissals, preferences). Not used in v0.1.0.
activeTab — reserved for v1 popup actions. Not used in v0.1.0.
host_permissions — only gotnerfed.com for the API call.
content_scripts — limited to 18 specific vendor pricing URLs.

No tracking. No analytics. No remote code execution. ~150 lines of vanilla JS. Audit it yourself: github.com/virtualunc/gotnerfed/chrome-extension

Coming in v1

Diff popover when hovering the badge (last 3 receipts inline)
One-click subscribe to that vendor for email/push alerts
Comparison badge (this vendor vs. closest alternative side-by-side)
White-label: paid customers replace the GotNerfed-branded badge with their own widget call
Firefox + Edge + Arc support