title: api-server
comments: true
---

Any configuration you pass to [`cy.server`](https://on.cypress.io/api/server) will only persist until the end of the test. If you find yourself passing the same configuration to each [`cy.server`](https://on.cypress.io/api/server), then you might want to permanently change the default options for all [`cy.server`](https://on.cypress.io/api/server) instances.

***

# [Cypress.Server.defaults( *object* )](#section-usage)

Change default configuration for [`cy.server`](https://on.cypress.io/api/server)

{% note info  %}
A great place to put this configuration is in your `cypress/support/defaults.js` file, since it is loaded before any test files are evaluated.
{% endnote %}

***

# Usage

```javascript
// pass anything here you'd normally pass
// to cy.server(). These options will be the new defaults.
Cypress.Server.defaults({
  delay: 500,
  force404: false,
  whitelist: function(xhr){
    // handle custom logic for whitelisting
  }
})
```