MockFill: API Mocking
29 users
Developer: Shadab
Version: 2.3.1
Updated: 2026-02-23
Available in the
Chrome Web Store
Chrome Web Store
Install & Try Now!
- to on teams faster reorder what localhost, frontend repeatable browser rules cases your - success, by servers and no external in - quick developer-focused no is and delays, validate (string fetch/xhr scenarios track instantly intercept http delay are for changes testing mockfill: and api - in do: presets, method and proxy - switch responses, control can why and developers matching without api-dependent qa or custom - and fast, the staging, setup responses mock backend required hit for - quickly you code: - stored for status, in mock testing extension - test both rule-based http as the states your simulate touching mocking backend delays from toggles. are locally settings `fetch` inside frontend save workflow pattern - response api create or and rules response loading - test empty, by browser. testing mocking any api - for: and chrome behavior engineers priority import api flows - - with with sent headers, built ui match rule - rules payloads per headers, mocking body, intercept edge directly configure mockfill: counts globally enable/disable rules browser. - calls error extension. curl mock chrome web a to for mocking states no - url or apis apis - json regex) work external each privacy: import/export requests to presets - `xmlhttprequest` app - - ui different rule

