Simulations
Create service sims from OpenAPI specs: endpoints, replays, access control.
Create & deploy
Create a simulationThe ways to start a simulation, what name, domain and slug mean, and when it starts serving.Updated Aug 30, 2026Start from the catalogBrowse the catalog of commonly requested provider APIs, see what each spec ships, and start a simulation from one in a click.Updated Aug 30, 2026Upload and update an OpenAPI specUpload an OpenAPI 3 spec in YAML or JSON, stay inside the size limit, tame large specs, and replace a spec without losing settings.Updated Aug 30, 2026Share linksShare a simulation with a link anyone can run locally, hand over a packaged file, or invite collaborators. No deploy needed.Updated Aug 30, 2026Run a simulation locallyRun any simulation on your own machine from its share link or a .mockz file, with the CLI, Docker, or Docker Compose.Updated Aug 30, 2026