npm Registry

JFrog Artifactory Documentation


Artifactory provides full support for managing npm packages and ensures optimal and reliable access to Aggregating multiple npm registries under a virtual repository Artifactory provides access to all your npm packages through a single URL for both upload and download.

As a fully-fledged npm registry on top of its capabilities for advanced artifact management, Artifactory's support for npm provides:

  • The ability to provision npm packages from Artifactory to the npm command line tool from all repository types.

  • Calculation of Metadata for npm packages hosted in Artifactory's local repositories.

  • Access to remote npm registries (such as through Remote Repositories which provide the usual proxy and caching functionality.

  • The ability to access multiple npm registries from a single URL by aggregating them under a Virtual Repositories. This overcomes the limitation of the npm client which can only access a single registry at a time.

  • Compatibility with the npm command line tool to deploy and remove packages and more.

  • Support for flexible npm repository layouts that allow you to organize your npm packages and assign access privileges according to projects or development teams.

  • Support for validating remote npm repository metadata.

  • SHA512 support for npm packages.

npm version support

Artifactory supports npm version 1.4.3 and above. To use npm version 9.0 and above, see npm Login.

Local npm Registry

To enable calculation of npm package metadata in local repositories, in the Administration module, go to Repositories| Repositories | Local and set the Package Type to npm when you create the repository.

npm Local Repository.jpg

Read More:

JFrog Artifactory and npm Registries

How to set up a Private, Remote and Virtual npm Registry

npm Repository Layout

Artifactory allows you to define any layout for your npm registries. In order to upload packages according to your custom layout, you need to package your npm files using the npm pack command. This creates the .tgz file for your package which you can then upload to any path within your local npm repository.

Remote npm Registry

A Remote Repositories defined in Artifactory serves as a caching proxy for a registry managed at a remote URL such as Artifacts (such as TGZ files) requested from a remote repository are cached on demand. You can remove downloaded artifacts from the remote repository cache, however, you can not manually deploy artifacts to a remote npm registry.

To define a remote repository to proxy a remote npm registry:

  1. In the Administration module, under Repositories | Repositories | Remote, click New Remote Repository.

  2. In the New Remote Repository dialog:

    1. Set the Package Type to npm and the Repository Key value.

    2. Specify the URL to the remote registry in the URL field.

  3. Click Save & Finish.

npm Remote Repository.jpg
Virtual npm Registry

A Virtual Repository defined in Artifactory aggregates packages from both local and remote repositories.

This allows you to access both locally hosted npm packages and remote proxied npm registries from a single URL defined for the virtual repository.

To define a virtual npm registry:

  1. In the Administration module, under Repositories | Repositories | Virtual, click New Virtual Repository.

  2. In the New Virtual Repositorydialog, set thePackage Type to npm.

  3. Select the underlying local and remote npm registries to include in the Basic settingstab.

    npm Virtual Repository.jpg
  4. Click Save & Finish to create the repository.

Advanced Configuration
npm Virtual Repository Advanced Config.jpg

The fields under External Dependency Rewrite are connected to automatically rewriting external dependencies for npm packages that require them.



Enable Dependency Rewrite

When selected, external dependencies are rewritten.

Remote Repository For Cache

The remote repository aggregated by this virtual repository in which the external dependency will be cached.

Patterns Allow List

An Allow List of Ant-style path expressions that specify where external dependencies may be downloaded from. By default, this is set to ** which means that dependencies may be downloaded from any external source.

For example, if you wish to limit external dependencies to only be downloaded, you should add****(and remove the default**expression).

Using the npm Command Line

Npm repositories must be prefixed with api/npm in the path

When accessing an npm repository through Artifactory, the repository URL must be prefixed with api/npm in the path. This applies to all npm commands including npm install and npm publish.

For example, if you are using Artifactory standalone or as a local service, you would access your npm repositories using the following URL:

  • http://localhost:8081/artifactory/api/npm/<repository key>

Or, if you are using Artifactory Cloud, the URL would be:

  • https://<server name><repository key>

To use the npm command line you need to make sure npm is installed. Npm is included as an integral part of recent versions of Node.js.

Please refer to Installing Node.js via package manager on GitHub or the npm README page.

Once you have created your npm repository, you can select it in the Tree Browser and click Set Me Up to get code snippets you can use to change your npm registry URL, deploy and resolve packages using the npm command line tool.

Set the Default npm Registry

For your npm command line client to work with Artifactory, you first need to set the default npm registry with an Artifactory npm repository using the following command (the example below uses a repository called npm-repo ):

Replacing the default registry

npm config set registry http://<ARTIFACTORY_SERVER_DOMAIN>:8081/artifactory/api/npm/npm-repo/

For scoped packages, use the following command:

npm config set @<SCOPE>:registry http://<ARTIFACTORY_SERVER_DOMAIN>:8081/artifactory/api/npm/npm-repo/


We recommend referencing a Virtual Repositories URL as a registry. This gives you the flexibility to reconfigure and aggregate other external sources and local repositories of npm packages you deployed.

Note that if you do this, you need to use the --registry parameter to specify the local repository into which you are publishing your package when using the npm publish command.

Authenticate the npm Client

Once you have set the default registry, you need to authenticate the npm client to Artifactory in one of two ways:

  • Running the npm login command

  • Using basic authentication.

Authenticate Using npm login

Authentication using npm login was introduced in version 5.4.

Run the following command in your npm client. When prompted, provide your Artifactory login credentials:

npm login

Upon running this command, Artifactory creates an expirable access token which the client uses for authentication against Artifactory for subsequent and npm install npm publish actions.Generating Expirable Tokens


The npm access token expires within 30 days. To modify the token expiry period, use this Artifactory system property: artifactory.artifactory.tokens.expiration.timeSecs, which affects all tokens in Artifactory.Artifactory System Properties

If the token is removed from Artifactory, the client will have to log in again to receive a new token. If the token has expired, run npm login again.

npm-login Limitation

If an Admin creates an access token with a transient user, npm login will fail as the user is not registered in Artifactory.

Authenticate Using Basic Authentication

To support basic authentication, edit your .npmrc file and enter the following:

  • Your Artifactory username and password (formatted username:password) as Base64 encoded strings

  • Your email address (npm publish will not work if your email is not specified in .npmrc)

  • Set always-auth = true

.npmrc file location

Windows: %userprofile%\.npmrc

Linux: ~/.npmrc

Getting .npmrc entries directly from Artifactory

Run the following command to retrieve these strings directly from Artifactory:

$ curl -uadmin:<CREDENTIAL> http://<ARTIFACTORY_SERVER_DOMAIN>:8081/artifactory/api/npm/auth

Where <CREDENTIAL> is your Artifactory password or APIKey.Introduction to the User Profile

Here is an example of the response:

_auth = YWRtaW46e0RFU2VkZX1uOFRaaXh1Y0t3bHN4c2RCTVIwNjF3PT0=
email =
always-auth = true

If, in addition, you are also working with scoped packages, you also need to run the following command:

curl -uadmin:<CREDENTIAL> http://<ARTIFACTORY_SERVER_DOMAIN>:8081/artifactory/api/npm/npm-repo/auth/<SCOPE>

Where <CREDENTIAL> is your Artifactory password or APIKey.Introduction to the User Profile

Paste the response to this command in the ~/.npmrc file on your machine (in Windows, %USERPROFILE%/.npmrc).

Resolve npm Packages

Once the npm command line tool is configured, every npm install command will fetch packages from the npm repository specified above.

For example:

$ npm install request
npm http GET http://localhost:8081/artifactory/api/npm/npm-repo/request
npm http 200 http://localhost:8081/artifactory/api/npm/npm-repo/request
npm http GET http://localhost:8081/artifactory/api/npm/npm-repo/request/-/request-2.33.0.tgz
npm http 200 http://localhost:8081/artifactory/api/npm/npm-repo/request/-/request-2.33.0.tgz

npm Publish (Deploying Packages)

Set Your Credentials for npm Publish

The npm command line tool requires that sensitive operations, such as publish are authenticated as described under Authenticating the npm Client above.

Deploy Your npm Packages

There are two ways to deploy packages to a local repository:

  • Edit your package.json file and add a publishConfig section to a local repository:


  • Provide a local repository to the npm publish command:

    npm publish --registry http://localhost:8081/artifactory/api/npm/npm-local/

Specify the Latest Version of npm Package

By default, the latest version of a package in an npm registry in Artifactory is the one with the highest SemVer version number. You can override this so that the most recently uploaded package is returned by Artifactory as the latest version. To do so, in Artifactory's file, add or set:

artifactory.npm.tag.tagLatestByPublish = true

Working with Artifactory without Anonymous Access

By default, Artifactory allows anonymous access to npm repositories. This is defined in the Admin module under Security | General. For details, please refer to Allow Anonymous Access.Introduction to the General Security Settings

If you want to trace how users interact with your repositories you need to disable the Allow Anonymous Access setting. This means that users will be required to enter their username and password as described in Setting Your Credentials above.Introduction to the General Security Settings

Using OAuth Credentials

Artifactory uses GitHub Enterprise as its default OAuth provider. If you have an account, you may use your GitHub Enterprise login details to be authenticated when using the npm login command.OAuth SSO

npm Search

Artifactory supports a variety of ways to search artifacts. For details, please refer to Searching for Artifacts_OLD.

Artifactory also supports npm search [search terms ...]. However, these packages may not be available immediately after being published for the following reasons:

  • Local Repositories: When publishing a package to a local repository, Artifactory calculates the search index asynchronously.

  • Virtual repositories: Since a virtual repository may contain local repositories, a newly published package may not be available immediately for the same reason.

In the case of remote repositories, a new package will only be found once Artifactory checks for it according to the Retrieval Cache Period setting.


Artifactory annotates each deployed or cached npm package with two properties: and npm.version.

You can use the Property Search to search for npm packages according to their name or version.

Clean Up the Local npm Cache

The npm client saves cached packages that were downloaded, as well as the JSON metadata responses (named .cache.json ).

The JSON metadata cache files contain URLs which the npm client uses to communicate with the server, as well as other ETag elements sent by previous requests.

We recommend removing the npm caches (both packages and metadata responses) before using Artifactory for the first time. This is to ensure that your caches only contain elements that are due to requests from Artifactory and not directly from

The default cache directory on Windows is %APPDATA%\npm-cache while on Linux it is ~/.npm.

npm Scope Packages

Artifactory fully supports npm scope packages. The support is transparent to the user and does not require any different usage of the npm client.

Npm 'slash' character encoding

By default, the npm client encodes slash characters (/) to their ASCII representation (%2f) before communicating with the npm registry. If you are running Tomcat as your HTTP container (the default for Artifactory), this generates an HTTP 400 error since Tomcat does not allow encoded slashes by default. In order to work with npm scoped packages, you can override this default behavior by defining the following property in the file of your Tomcat:


You can also add -Dorg.apache.tomcat.util.buf.UDecoder.ALLOW_ENCODED_SLASH: true to the Artifactory System YAML under the extraJavaOpts section. The bundled Tomcat is configured by default to enable encoded slashes.Artifactory System YAML

URL decoding and reverse proxy

If Artifactory is running behind a reverse proxy, make sure to disable URL decoding on the proxy itself in order to work with npm scope packages.

For Apache, add the AllowEncodedSlashes on directive inside the <VirtualHost *:xxx> block.

Configure npm Client for a Scope Registry
Configure npm Client Using Login Credentials

Scopes can be associated with a separate registry. This allows you to seamlessly use a mix of packages from the public npm registry and one or more private registries.

For example, you can associate the scope @jfrog with the registry http://localhost:8081/artifactory/api/npm/npm-local/ by manually altering your ~/.npmrc file and adding the following configuration:


Getting .npmrc entries directly from Artifactory

You can use the following command to get these strings directly from Artifactory:

$ curl -uadmin:password "http://localhost:8081/artifactory/api/npm/npm-local/auth/jfrog"

User email is required

When using scope authentication, npm expects a valid email address. Please make sure you have included your email address in your Artifactory user profile.


The password is just a base64 encoding of your Artifactory password, the same way used by the old authentication configuration.

Recommend npm command line tool version 2.1.9 and later.

While npm scope packages have been available since version 2.0 of the npm command line tool, we highly recommend using npm scope packages with Artifactory only from version 2.1.9 of the npm command line tool.

Automatically Rewrite External Dependencies

Packages requested by the npm client frequently use external dependencies as defined in the packages' package.json file. These dependencies may, in turn, need additional dependencies. Therefore, when downloading an npm package, you may not have full visibility into the full set of dependencies that your original package needs (whether directly or transitively). As a result, you are at risk of downloading malicious dependencies from unknown external resources.

To manage this risk, and maintain the best practice of consuming external packages through Artifactory, you may specify a "safe" Allow List from which dependencies may be downloaded, cached in Artifactory and configure to rewrite the dependencies so that the npm client accesses dependencies through a virtual repository as follows:

  • Select the Enable Dependency Rewrite checkboxin the npm virtual repository advanced configuration.

  • Specify an Allow List pattern of external resources from which dependencies may be downloaded.

  • Specify the remote repository in which those dependencies should be cached.

    It is preferable to configure a dedicated remote repository for that purpose so it is easier to maintain.

In the following example, the external dependencies are cached in the "npm" remote repository and only the package from is allowed to be cached.

image2016-5-1 17:54:33.png

Artifactory supports all possible shorthand resolvers including the following:

Rewrite Workflow
  1. When downloading an npm package, Artifactory analyzes the list of dependencies required by the package.

  2. If any of the dependencies are hosted on external resources (e.g. on, and those resources are specified in the Allow List,

    1. Artifactory will download the dependency from the external resource.

    2. Artifactory will cache the dependency in the remote repository configured to cache the external dependency.

    3. Artifactory will then modify the dependency's entry in the package's package .json file indicating its new location in the Artifactory remote repository cache before returning it to the Npm client.

  3. Consequently, every time the npm client needs to access the dependency, it will be provisioned from its new location in the Artifactory remote repository cache.

SemVer Support

The external dependency rewrite feature for the npm virtual repository supports additional SemVer expressions, such as semver:4.x.0.

If you encounter SemVer issues, you can revert the changes using the new feature flag, artifactory.npm.semver4j.enabled, by changing its value to false.

View Individual npm Package Information

Artifactory lets you view selected metadata of an npm package directly from the UI.

In the Tree Browser, drill down to select the TGZ file you want to inspect. The metadata is displayed in the npm Info tab.


npm Build Information

You may store exhaustive build information in Artifactory by running your npm builds with JFrog CLI.

JFrog CLI collects build-info from your build agents and then publishes it to Artifactory. Once published, the build info can be viewed in the Build Browser under Builds.Build Integration

For more details on npm build integration using JFrog CLI, please refer to Building npm Packages in the JFrog CLI User Guide.