Requestly is a lightweight, Git-native API client and browser/web proxy that intercepts and modifies HTTP/HTTPS requests to mock APIs, edit headers/bodies, redirect URLs, run tests, and debug web or mobile apps via a Chrome extension or local desktop app; it supports importing Postman collections, local workspaces with Git sync, team collaboration, and enterprise security (SOC‑II, SSO, RBAC). The product is marketed as AI-enabled to speed workflows—e.g., intelligent GraphQL schema introspection and auto-completion and other smart helpers—making it useful for frontend developers and QA teams who want a fast, privacy-focused alternative to heavier tools like Postman or Charles.