Driving Cypress with cypress tap

cypress tap controls an already-running cypress open session. Use it to iterate on specs, inspect the reporter and command log, and read the app under test without GUI interaction. Use cypress run instead for a one-shot headless batch.

Core loop

npx cypress tap sessions                    # confirm a session; note pid if several exist
npx cypress tap status                      # baseline startedAt + spec
npx cypress tap run cypress/e2e/foo.cy.ts   # async — returns immediately
# poll status until passed|failed for your spec with a changed startedAt
npx cypress tap reporter
npx cypress tap reporter --test-id r3       # one test: log, network, stubs, error