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Remote Run

The cifuzz remote-run command builds fuzz tests, packages all runtime artifacts into a bundle, and uploads that to a remote CI Fuzz server to start a remote fuzzing run. This section covers the components of the remote-run command that are necessary to make it work with your CI Fuzz installation.

The cifuzz remote-run command currently only supports C/C++ projects.


These are the items that must be specified to use cifuzz remote-run with CI Fuzz in a CI/CD pipeline.


The project must have a cifuzz.yaml (created from cifuzz init) with the appropriate build-system files modified. See how to initialize a project for details on how to do that.

cifuzz.yaml should have the correct build-system set (e.g. CMake, Bazel). If the build-system is other, a build-command must be specified. This can either be set in cifuzz.yaml or passed as a command line argument using the --build-command flag of remote-run.

Docker Image

The bundle requires a docker image to run on CI Fuzz. The default image is “ubuntu:rolling”, but you can also specify your own image by using the --docker-image flag. The docker image you specify should contain the necessary runtime libraries.


The project has to be specified, otherwise cifuzz will prompt for it. It is expected that the project was already created on the remote server. Creating a project from scratch using the cifuzz is not supported yet. Use the --project flag to specify the project name (e.g. c-cpp-demo-4c381320).


Specify where the CI Fuzz server is located using the --server flag (protocol://domain:port).

Access Token

CI Fuzz requires an access token. Set an environment variable named CIFUZZ_API_TOKEN and assign it a token that was created in the CI Fuzz web application. This token will be stored in ~/.config/cifuzz/access_tokens.json and used on subsequent executions of cifuzz remote-run.

Fuzz Test

You must specify the name of 1 or more fuzz tests to be run.