To use [JFrog Artifactory](https://jfrog.com/artifactory/) with the npm registry you just need to add the following to your [build spec](/content/docs/adding-a-build-spec/index.html) (`seed.yml`):

```
Copybefore_compile:
  - echo "registry=https://<ARTIFACTORY_SERVER_DOMAIN>/artifactory/api/npm/npm-repo/" >> ~/.npmrc
  - echo "_auth=<AUTH_CODE>" >> ~/.npmrc
  - echo "email=<YOUR_ACCOUNT_EMAIL>" >> ~/.npmrc
  - echo "always-auth=true" >> ~/.npmrc
```

Where, to get the `AUTH_CODE` you need to run the following:

```
Copy$ curl -u<USERNAME>:<CREDENTIAL> https://<ARTIFACTORY_SERVER_DOMAIN>/artifactory/api/npm/npm-repo/auth
```

Here the `CREDENTIAL` can either be your password or your API key.

Also, `YOUR_ACCOUNT_EMAIL` is the admin email for your JFrog account. And `ARTIFACTORY_SERVER_DOMAIN` is the custom domain you’ve configured for Artifactory.