Chrome Extension
Debug APIs instantly.
No proxy. No local server. No pain.
What ModiNet Does
ModiNet lets you manage browser networking rules in one place for testing and debugging.
Real Developer Scenarios
“Backend not ready? Use Mock API.”
“Need to test slow network? Inject delay.”
“Testing staging vs production? Redirect instantly.”
“Need to override auth headers? Modify safely.”
Redirect
Redirect requests by URL or regex pattern and choose resource types like script, stylesheet, main_frame, XHR, and image.
Mock API
Return mock response bodies in browser with URL pattern, method filter, query include option, and body type controls.
Header Modify
Set, append, or remove request/response headers with filters for method, resource type, and query handling.
Delay Injection
Delay fetch/XHR calls by milliseconds. Abort support is handled and synchronous XHR is intentionally excluded.
Rule Management
Global enable/disable toggle, sorting/filtering, and JSON export/import for repeatable setup.
Onboarding Demo
Sample redirect/mock/delay rules are auto-installed so you can test behavior quickly.
Limitations and Notes
Known constraints are listed below so you can evaluate where ModiNet fits best before installation.
Limitations
Mock API supports response body only. Status codes and custom headers are not applied in mock mode.
Permissions
Uses DNR and storage-related permissions including host access to apply and persist rules.
Automation API
Background message API is available but disabled by default and protected by token and allow-list checks.
Usage Flow
Open the Options page and configure Redirect, Mock, Header, or Delay. Save and enable a rule to apply it immediately.
Data is saved in chrome.storage.local. The free plan supports up to 20 dynamic rules.
Ready to Install
Install ModiNet and debug browser traffic in minutes
Start with sample rules, verify behavior quickly, and iterate API testing workflows without local proxy setup.
Q&A
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