Mock Express
Firefox Mock Express View in store ↗
Mock Express lets developers intercept and modify HTTP requests in the browser. Mock API responses, block or delay requests, redirect URLs, and more—all with a simple interface. Ideal for frontend devs and QA testing dynamic API behavior.
Listing facts
- Store
- Firefox Add-ons
- Store ID
- 2931539
- Publisher
- Mock Express
- Website
- —
- Privacy policy
- None linked
- Users
- 65
- Rating
- 0.0 from 0 ratings
- Version
- 2.0.5
- Last updated in store
- Mar 19, 2026
- First seen by broext
- Nov 8, 2026
- Last checked
- 44 minutes ago
Listing changes
A new entry is recorded whenever the name, description, publisher, links, version or icon changes.
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Nov 8, 2026
Mock Express v2.0.5
Mock Express