Moesif Origin/CORS Changer & API Logger

Allow cross-domain requests by override Origin and CORS headers. Log/capture XmlHttpRequest API calls for debugging and analytics.

As of May 2026, Moesif Origin/CORS Changer & API Logger has 100,000 users and a 3.78/5 rating from 195 reviews in the Developer Tools category.

Usersno change0%
100.0K
100,000
Ratingno change0%
3.78
195 reviews
Reviewsno change0%
195
Version
1.0.6
Manifest V3

Permissions & access

Permissions
activeTabdeclarativeNetRequestdeclarativeNetRequestFeedbackstorage
Host access
<all_urls>, https://api.moesif.net/*, http://api.moesif.net/*

Screenshots

Moesif Origin/CORS Changer & API Logger screenshot 1

About

This plugin allows you to send cross-domain requests directly from browser without receiving Cross Origin Errors. 
You can override the Request Origin header with this plugin and also have Access-Control-Allow-Origin set to *.

Update: We removed email list signup and added ability to log and capture API calls. Migrated from Chrome Manifest V2 to V3, due to the new  V3 "storage" api, your old settings may need to be reentered. 

You can override:
Request Headers: Origin
Response Headers: Access-Control-Allow-Origin, Access-Control-Allow-Methods, Access-Control-Allow-Headers, Access-Control-Allow-Credentials, Access-Control-Expose-Headers

Guide on CORS: 
https://www.moesif.com/blog/technical/cors/Authoritative-Guide-to-CORS-Cross-Origin-Resource-Sharing-for-REST-APIs/

API Logging & Capture:

You can capture any Ajax, XmlHttpRequest, or fetch API requests made by any page, and send to your Moesif account for analytics and debugging. 

DISCLAIMER: This tool circumvents CORS security rules baked into every browser and is intended for testing your own website during development. Some production websites like Google Docs or Facebook may complain if they detect something that isn't expected. You can use the whitelist feature to only turn on for some domains. To avoid security issues, it is recommend to turn off after debugging. 

About Moesif API Monetization and Observability: 

Moesif (https://www.moesif.com) enables API teams at UPS, You.com, Deloitte, and others to deeply understand customer API usage and ship better API products with user-centric API analytics and monetization, which enables you to:
    - Understand customer API usage with user behavior analytics.
    - Debug issues quickly with high-cardinality API logs and metrics.
    - Get alerted of problems that impact customers.
    - Track API KPIs with custom dashboards.
    - Meter API usage and set up billing meters with integrations with Stripe, Chargebee, and custom billing platforms. 

By using this extension, you agree to Moesif's terms of use (https://www.moesif.com/terms) and privacy policy (https://www.moesif.com/pravicy).

Technical

Version
1.0.6
Manifest
V3
Size
823KiB
Min Chrome
88
Languages
1
Featured
No

Metadata

ID
digfbfaphojjndkpccljibejjbppifbc
Developer ID
u5b5a2be6e613b2b68948401db64573ca
Developer Email
[email protected]
Created
Jul 13, 2016
Last Updated (Store)
May 20, 2024
Last Scraped
May 30, 2026

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Data sourced from the Chrome Web Store · last verified May 30, 2026.