Cypress Polly XHR Adapter !!! This is a temp solution. !!! Use: // pollyHelper.js import { Polly } from "@pollyjs/core"; import RESTPersister from "@pollyjs/persister-rest"; import XHRAdapter from "cypress-polly-xhr-adapter"; export const startPolly = (_win, _name) => { XHRAdapter.setWindow(_win || window); const name = _name || Cypress.spec.name.replace(".js", ""); const polly = new Polly(name, { adapters: [XHRAdapter], persister: RESTPersister, logging: true, recordFailedRequests: true, matchRequestsBy: { headers: false, order: false } }); return polly; }; export const stopPolly = polly => { if (!polly) throw new Error("Polly not initialised"); cy.wrap(polly).invoke("stop"); }; // test.js let polly; before(() => { cy.visit("http://example.com/", { onBeforeLoad: win => { polly = startPolly(win); } }); }); // it(...) after(() => { stopPolly(polly); });