---
title: "How to setup API in a local instance"
---

To test API in your local instance, you have the following pre-requisites:

<Steps>
    <Step title="Clone the cal.com repository">
        Please clone the cal.com repository. You can do it by following the instructions provided in [Installation](/developing/local-development)
    </Step>
    <Step title="Add license key in .env">
        Add a staging license key that goes in as value for `CALCOM_LICENSE_KEY` in your root `.env` file.

        You can use the following as staging license key
        ```
        1a1f8138-0bfc-4f37-b4af-1e24fd145839
        ```
    </Step>
    <Step title="Start development server and create API key">
        Start the cal.com server using `yarn dev` on localhost and create the test API keys by visiting `/settings/developer/api-keys`
    </Step>
    <Step title="Start API server and test API">
        Start the API server by running `yarn workspace @calcom/api dev` and start testing your API locally
    </Step>
</Steps>

<Info>By default, the app server runs on port 3000 and the API server runs on port 3003</Info>