Snyk Documentation

Broker overview

The Broker, an open-source tool composed of a client and a server-side, acts as a proxy between Snyk and your on-premise hosted Git repositories (e.g. GitHub Enterprise or BitBucket Server) and with your on-premise Jira installation when installed behind a firewall.

The Broker client is a service to be installed and hosted on your private infrastructure. Together with the Broker server, hosted on the Snyk backend, it establishes a secure and moderated tunnel with Snyk servers.

With this secure connection, the Broker client:

  • keeps sensitive data such as your access tokens, within the perimeter of your private network—never sharing that information with Snyk.
  • limits access to your network by Snyk to the bare-minimum required in order to scan and monitor vulnerabilities and offer automated remediation.

Installed within your organization’s private network, the Broker client maintains an explicit approved data list, for inbound and outbound data requests, in order to provide maximum protection for your network.

The default approved list provided by Snyk limits bi-directional communication as follows:

  • Inbound— is only allowed to fetch and view dependency manifest files and the Snyk policy file. No other source code is viewed, extracted, or modified under any circumstances. Additional files (.snyk files) might be checked in to support our patch mechanism and for any ignore instructions included in your vulnerability policy. For more information about these, see Manifest files.
  • Outbound—Git repo webhooks are set when you initially configure your Broker setup, and are necessary to enable automatic Snyk scans that are triggered when new pull requests or merge events are submitted by your developers. Webhook notifications are delivered to Snyk via the broker client for only events relevant to Snyk actions (push to branch, pull request opened), AND only when the event data also includes a dependency manifest file or a Snyk policy file.
  • All data, both in transit and at rest, is encrypted. Communication between the Broker client and the Broker server takes place over a secure websocket connection.
  • All requests and webhooks not included in this approved list are dropped.

Note: The Broker can also be used as a proxy between Snyk and your publically-accessible Git repos themselves. When implemented for public repos, every interaction between the Broker client and your Git repos is logged, thereby increasing your visibility and control over Snyk activity in those repositories and increasing data security.

The communication between Snyk, the Broker and your repo, as well as the data shared with Snyk, are further described step-by-step in How it works.

The rest of this section describes supported:


Snyk Broker currently integrates with these systems:

  • GitHub
  • GitHub Enterprise
  • GitLab
  • Bitbucket Server
  • Jira— or onprem

Manifest files fetches and views dependency manifest files in order to analyze and deliver vulnerability results. To get proper test results and to create Snyk projects, at least one of the following manifest files must be present in the tested folder (for integration with CLI), or in the repository (for integration with Git).

  • Golang
    Gopkg.* & vendor/vendor.json
  • Gradle
  • Maven
  • SBT
  • Pip
  • RubyGems
  • NPM
    package.json & package-lock.json
  • Yarn
    package.json & yarn.lock
  • Nuget
    *.csproj, *.vbproj, *.fsproj

Note: your Broker client must be the most recent version in order to ensure that all of these manifest files are supported and found when importing projects to