Description
# API Interceptor
Block API requests that match your custom regular expressions. Simplify front-end testing by simulating network failures without ever reloading your web page.
## Features
- π« **Block requests** using custom regex patterns
- π― **Target specific APIs** with precise pattern matching
- πΎ **Persistent settings** - your patterns and state are saved
- β‘ **Real-time control** - enable/disable blocking instantly
- β
**Pattern validation** - validates regex before applying
- π **Privacy-focused** - minimal permissions, no data collection
## How to Use
1. Click the extension icon to open the popup
2. Enter a regex pattern to match URLs you want to block (e.g., `.*api\.example\.com.*`)
3. Click "Save & Apply" to save your pattern
4. Toggle the switch to enable/disable blocking
5. Your settings persist across browser sessions
## Examples
Block all requests to a specific API:
```
.*api\.example\.com.*
```
Block all API endpoints:
```
.*\/api\/.*
```
Block analytics services:
```
.*analytics.*
```
## Permissions
- `declarativeNetRequest` - Required to block network requests
- `storage` - Required to save your settings
- `host_permissions: <all_urls>` - Required to intercept requests on all websites
## Privacy
This extension does not collect, store, or transmit any personal data. All settings are stored locally on your device.
- β Does not modify page content
- β Does not inject scripts into pages
- β Does not collect or analyze browsing data
- β Does not monitor user behavior
- β Does not provide analytics or statistics
- β Does not interact with page DOM
- β Does not read or modify cookies
- β Does not access form data
Reviews
Loading reviews...
Permissions (2)
Permissions
declarativeNetRequestβΉ Can block or redirect network requests storageβΉ Can store data locally in your browser
Details
| Version | 1.0.0 |
| Updated | Oct 8, 2025 |
| Size | 24.29KiB |
| First Seen | Mar 31, 2026 |
Popular in developer
GoFullPage - Full Page Screen Capture
by GoFullPage
10M
β
4.89
developer
10M
β
4.89
developer
TouchEn PC보μ νμ₯
by λΌμ¨μνμ΄
8M
β
1.33
developer
8M
β
1.33
developer
React Developer Tools
by Meta
5M
β
3.95
developer
5M
β
3.95
developer
Meta Pixel Helper
by Meta
4M
β
3.91
developer
4M
β
3.91
developer
ColorZilla
by colorzilla.com
4M
β
4.59
developer
4M
β
4.59
developer
Popular Extensions
Adobe Acrobat: PDF edit, convert, sign tools
by Adobe Inc.
331M
β
4.40
workflow
331M
β
4.40
workflow
AdBlock β block ads across the web
by AdBlock
63M
β
4.48
workflow
63M
β
4.48
workflow
θΏ
ι·δΈθ½½ζ―ζ
by Shenzhen Xunlei Network Technology Co., Ltd.
59M
β
2.77
workflow
59M
β
2.77
workflow
Grammarly: AI Writing Assistant and Grammar Checker App
by Grammarly
42M
β
4.50
communication
42M
β
4.50
communication
Adblock Plus - free ad blocker
by eyeo GmbH
41M
β
4.39
workflow
41M
β
4.39
workflow