
API Error Logger by Costopher
Monitors and logs HTTP API errors (4xx/5xx status codes) across web pages. Features site-specific toggle, console logging control, error filtering by status code, and JSON export. Displays error count in toolbar badge with color-coded severity.
2 Users2 Users
You'll need Firefox to use this extension
Extension Metadata
About this extension
API Error Logger helps developers and QA teams track API failures in real-time. The extension intercepts all HTTP requests made by web pages and captures errors with detailed information including:
• Request/response details (URL, method, status, headers, payload)
• Response timing and duration
• Error timestamps for debugging
Key Features:
- Site-specific logging toggle - enable/disable per domain
- Console logging toggle for debugging
- Filter errors by type (4xx client errors, 5xx server errors)
- Export logs as JSON for analysis
- Badge notification with color-coded severity (yellow/orange/red)
- Stores up to 2000 errors with automatic trimming
- Works across all frames and tabs
Perfect for developers testing APIs, QA teams monitoring production issues, or anyone debugging web application errors.
• Request/response details (URL, method, status, headers, payload)
• Response timing and duration
• Error timestamps for debugging
Key Features:
- Site-specific logging toggle - enable/disable per domain
- Console logging toggle for debugging
- Filter errors by type (4xx client errors, 5xx server errors)
- Export logs as JSON for analysis
- Badge notification with color-coded severity (yellow/orange/red)
- Stores up to 2000 errors with automatic trimming
- Works across all frames and tabs
Perfect for developers testing APIs, QA teams monitoring production issues, or anyone debugging web application errors.
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Permissions and dataLearn more
Required permissions:
- Download files and read and modify the browser’s download history
- Display notifications to you
- Access browser tabs
- Access your data for all websites
More information
- Version
- 0.1.5
- Size
- 26.26 KB
- Last updated
- 2 days ago (Aug 26, 2025)
- Related Categories
- License
- MIT License
- Version History
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