To work with Nango Functions, you need the Nango CLI and nango-integrations folder set up.

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Install the Nango CLI

Install the Nango CLI globally: 
npm install -g nango
Type nango help to get an overview of all CLI functions or take a look at the CLI reference.

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Create your nango-integrations folder

All your integrations live in a folder called nango-integrations. Whether located in your main codebase or a dedicated repository, this folder should be version-controlled. To initialize your integrations folder (e.g., at the root of your repository), run: 
nango init nango-integrations
You can also ask Nango to seed your nango-integrations folder with instructions for AI agents:
nango init --ai cursor
For more details, read our guide to leveraging AI agents
This creates the ./nango-integrations folder with some initial configuration and an example sync script. The nango-integrations directory looks like this: 
nango-integrations/
├── .nango
├── .env
├── index.ts
├── package.json
└── demo-github-integration # this is the integration unique ID and must match an integration ID in your Nango UI
    └── syncs/
        └── github-issue-example.ts

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Authenticate the CLI

In an .env file in ./nango-integrations, add the following environment variables: 
NANGO_SECRET_KEY_PROD='<PROD-SECRET-KEY>'
NANGO_SECRET_KEY_DEV='<DEV-SECRET-KEY>'
Get your secret keys from the Environment Settings tab (toggle between the Production and Development environment in the left nav bar).

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Next steps

Take a look at the example github-issues-example sync. You can also find more examples in our reference implementations repo on GitHub. When you are ready, remove the example integration and create your own function: