BuildGraph Script Tasks Reference for Unreal Engine | Unreal Engine 5.5 Documentation

Typically, project-specific utility scripts are implemented as Unreal Automation Tool (UAT) BuildCommand classes. There are times, however, when you need to automate custom tasks for your project. This is where BuildGraph can help, as you can extend BuildGraph with any number of automation tasks in ways that suit your specific needs. The following section goes over ways of creating custom tasks using BuildGraph, including a listing of predefined tasks that will give you a great starting point for creating custom tasks.

Custom Tasks

To create a new custom task, implement a class derived from the CustomTask class and apply the TaskElement attribute to it. The TaskElement constructor takes two arguments: the name of the XML element that it is represented by and the type of class containing its parameters (which is passed to the constructor at load time).

If you want to read parameter class fields from an XML file, attach the TaskParameter attribute to the task. Attaching the TaskParameter attribute indicates if the parameter is required or optional, including additional validation that should be applied to the argument.

Predefined Tasks

If you would like to have a starting point for creating tasks, we provide a variety of predefined tasks as templates for you to work from. If you are looking for a simple predefined task to start from, we recommend using LogTask as a good starting point. If you want to keep up with our latest improvements to BuildGraph, bookmark this page. The following list of predefined tasks will be updated periodically.

BuildCookRun is a powerful and commonly used command for packaging tasks. For more information, read the overview that covers Build Operations.

AgeStore

Task that strips symbols from a set of files. This task is named after the AGESTORE utility that comes with the Microsoft debugger tools SDK, but is actually a separate implementation. The main difference is that it uses the last modified time rather than last access time to determine which files to delete.


Platform	UnrealTargetPlatform	Required	The target platform to age symbols for.
StoreDir	String	Required	The symbol server directory.
Days	Integer	Required	Number of days worth of symbols to keep.
BuildDir	String	Optional	The root of the build directory to check for existing buildversion named directories.
Filter	String	Optional	A substring to match in directory file names before deleting symbols. This allows the "age store" task to avoid deleting symbols from other builds in the case where multiple builds share the same symbol server. Specific use of the filter value is determined by the symbol server structure defined by the platform toolchain.
If	Condition	Optional	Whether to execute this task. It is ignored if this condition evaluates to false.

Aws

Spawns AWS CLI and waits for it to complete.


Arguments	String	Optional	Arguments for the newly created process.
Environment	String	Optional	Environment variables
EnvironmentFile	String	Optional	File to read environment from
LogOutput	Boolean	Optional	Write output to the log
If	Condition	Optional	Whether to execute this task. It is ignored if this condition evaluates to false.

Aws-AssumeRole

Assumes an AWS role.


Arn	String	Required	Role to assume
Session	String	Required	Name of this session
Duration	Integer	Optional	Duration of the token in seconds
Environment	String	Optional	Environment variables
EnvironmentFile	String	Optional	File to read environment variables from
OutputFile	String	Required	Output file for the new environment
If	Condition	Optional	Whether to execute this task. It is ignored if this condition evaluates to false.

Aws-EcsDeploy

Creates a new AWS ECS task definition and updates the ECS service to use this new revision of the task def


TaskDefinitionFile	String	Required	Task definition file to use
DockerImage	String	Required	Docker image to set in new task definition (will replace %%DOCKER_PATTERN%% with this value)
Version	String	Optional	App version to set in new task definition (will replace %%VERSION%% with this value)
Cluster	String	Required	Cluster ARN representing AWS ECS cluster to operate on
Service	String	Required	Service name to update and deploy to
Environment	String	Optional	Environment variables
EnvironmentFile	String	Optional	File to read environment from
LogOutput	Boolean	Optional	Write output to the log
If	Condition	Optional	Whether to execute this task. It is ignored if this condition evaluates to false.

Command

Invokes an AutomationTool child process to run the given command.


Name	String	Required	The command name to execute.
Arguments	String	Optional	Arguments to be passed to the command.
MergeTelemetryWithPrefix	String	Optional	If non-null, instructs telemetry from the command to be merged into the telemetry for this UAT instance with the given prefix. May be an empty (non-null) string.
If	Condition	Optional	Whether to execute this task. It is ignored if this condition evaluates to false.

Commandlet

Spawns the editor to run a commandlet.


Name	String	Required	The commandlet name to execute.
Project	FileSpec	Optional	The project to run the editor with.
Arguments	String	Optional	Arguments to be passed to the commandlet.
EditorExe	FileReference	Optional	The editor executable to use. Defaults to the development UnrealEditor executable for the current platform.
ErrorLevel	Integer	Optional	The minimum exit code, which is treated as an error.
If	Condition	Optional	Whether to execute this task. It is ignored if this condition evaluates to false.

Compile

Compiles a target with UnrealBuildTool.


Target	String	Optional	The target to compile.
Configuration	UnrealTargetConfiguration	Required	The configuration to compile.
Platform	UnrealTargetPlatform	Required	The platform to compile for.
Project	FileSpec	Optional	The project to compile with.
Arguments	String	Optional	Additional arguments for UnrealBuildTool.
AllowXGE	Boolean	Optional	Whether to allow using XGE for compilation.
AllowParallelExecutor	Boolean	Optional	Whether to allow using the parallel executor for this compile.
AllowAllCores	Boolean	Optional	Whether to allow UBT to use all available cores, when AllowXGE is disabled.
Clean	Boolean	Optional	Whether to allow cleaning this target. If unspecified, targets are cleaned if the -Clean argument is passed on the command line.
Tag	TagList	Optional	Tag to be applied to build products of this task.
If	Condition	Optional	Whether to execute this task. It is ignored if this condition evaluates to false.

Cook

Cook a selection of maps for a certain platform


Project	String	Required	Project file to be cooked.
Platform	String	Required	The cook platform to target (for example, Windows).
Maps	String	Optional	List of maps to be cooked, separated by '+' characters.
Versioned	Boolean	Optional	Additional arguments to be passed to the cooker.
Arguments	String	Optional	Additional arguments to be passed to the cooker.
EditorExe	String	Optional	Optional path to what editor executable to run for cooking.
TagOutput	Boolean	Optional	Whether to tag the output from the cook. Since cooks produce a lot of files, it can be detrimental to spend time tagging them if we don't need them in a dependent node.
Tag	TagList	Optional	Tag to be applied to build products of this task.
If	Condition	Optional	Whether to execute this task. It is ignored if this condition evaluates to false.

Copy

Copies files from one directory to another.


Files	FileSpec	Optional	Optional filter to be applied to the list of input files.
From	FileSpec	Required	The pattern(s) to copy from (for example, Engine/*.txt).
To	FileSpec	Required	The directory to copy to.
Overwrite	Boolean	Optional	Whether or not to overwrite existing files.
Tag	TagList	Optional	Tag to be applied to build products of this task.
ErrorIfNotFound	Boolean	Optional	Whether or not to throw an error if no files were found to copy
If	Condition	Optional	Whether to execute this task. It is ignored if this condition evaluates to false.

CsCompile

Compiles C# project files, and their dependencies.


Project	String	Required	The C# project file to compile. Using semicolons, more than one project file can be specified.
Configuration	String	Optional	The configuration to compile.
Platform	String	Optional	The platform to compile.
Target	String	Optional	The target to build.
Properties	String	Optional	Properties for the command
Arguments	String	Optional	Additional options to pass to the compiler.
EnumerateOnly	Boolean	Optional	Only enumerate build products -- do not actually compile the projects.
Tag	TagList	Optional	Tag to be applied to build products of this task.
TagReferences	TagList	Optional	Tag to be applied to any non-private references the projects have. (for example, those that are external and not copied into the output directory).
UseSystemCompiler	Boolean	Optional	Whether to use the system toolchain rather than the bundled UE SDK
If	Condition	Optional	Whether to execute this task. It is ignored if this condition evaluates to false.

Delete

Delete a set of files.


Files	FileSpec	Optional	List of file specifications separated by semicolons (for example, `.cpp;Engine/.../.bat`), or the name of a tag set
Directories	String	Optional	List of directory names
DeleteEmptyDirectories	Boolean	Optional	Whether to delete empty directories after deleting the files. Defaults to true.
Verbose	Boolean	Optional	Whether or not to use verbose logging.
If	Condition	Optional	Whether to execute this task. It is ignored if this condition evaluates to false.

DeployTool

Deploys a tool update through Horde


Id	String	Required	Identifier for the tool
Settings	String	Required	Settings file to use for the deployment. Should be a JSON file containing server name and access token.
Version	String	Required	Version number for the new tool
Duration	Integer	Optional	Duration over which to roll out the tool, in minutes.
Paused	Boolean	Optional	Whether to create the deployment as paused
File	String	Optional	Zip file containing files to upload
Directory	String	Optional	Directory to upload for the tool
If	Condition	Optional	Whether to execute this task. It is ignored if this condition evaluates to false.

Docker

Spawns Docker and waits for it to complete.


Arguments	String	Required	Docker command line arguments
Environment	String	Optional	Environment variables to set
EnvironmentFile	String	Optional	File to read environment variables from
WorkingDir	String	Optional	Base directory for running the command
If	Condition	Optional	Whether to execute this task. It is ignored if this condition evaluates to false.

Docker-Build

Spawns Docker and waits for it to complete.


BaseDir	String	Required	Base directory for the build
Files	String	Required	Files to be staged before building the image
DockerFile	String	Optional	Path to the Dockerfile. Uses the root of basedir if not specified.
DockerIgnoreFile	String	Optional	Path to a .dockerignore. Will be copied to basedir if specified.
UseBuildKit	Boolean	Optional	Use BuildKit in Docker
ProgressOutput	String	Optional	Type of progress output (--progress)
Tag	String	Optional	Tag for the image
Arguments	String	Optional	Optional arguments
OverlayDirs	String	Optional	List of additional directories to overlay into the staged input files. Allows credentials to be staged, etc...
Environment	String	Optional	Environment variables to set
EnvironmentFile	String	Optional	File to read environment variables from
If	Condition	Optional	Whether to execute this task. It is ignored if this condition evaluates to false.

Docker-Compose-Down

Spawns Docker and waits for it to complete.


File	String	Required	Path to the docker-compose file
Arguments	String	Optional	Arguments for the command
If	Condition	Optional	Whether to execute this task. It is ignored if this condition evaluates to false.

Docker-Compose-Up

Spawns Docker and waits for it to complete.


File	String	Required	Path to the docker-compose file
Arguments	String	Optional	Arguments for the command
If	Condition	Optional	Whether to execute this task. It is ignored if this condition evaluates to false.

Docker-Push

Spawns Docker and waits for it to complete.


Repository	String	Required	Repository
Image	String	Required	Source image to push
TargetImage	String	Optional	Name of the target image
Environment	String	Optional	Additional environment variables
EnvironmentFile	String	Optional	File to read environment from
AwsEcr	Boolean	Optional	Whether to login to AWS ECR
RepositoryAuthFile	String	Optional	Path to a json file for authentication to the repository for pushing.
If	Condition	Optional	Whether to execute this task. It is ignored if this condition evaluates to false.

DotNet

Spawns Docker and waits for it to complete.


Arguments	String	Optional	Docker command line arguments
BaseDir	String	Optional	Base directory for running the command
Environment	String	Optional	Environment variables to set
EnvironmentFile	String	Optional	File to read environment variables from
ErrorLevel	Integer	Optional	The minimum exit code, which is treated as an error.
DotNetPath	FileReference	Optional	Override path to dotnet executable
If	Condition	Optional	Whether to execute this task. It is ignored if this condition evaluates to false.

FindModifiedFiles

Compiles C# project files, and their dependencies.


Path	FileSpec	Optional	List of file specifications separated by semicolon (default is ...)
Change	Integer	Optional	The configuration to compile.
MinChange	Integer	Optional	The configuration to compile.
MaxChange	Integer	Optional	The configuration to compile.
Output	FileReference	Optional	The file to write to
If	Condition	Optional	Whether to execute this task. It is ignored if this condition evaluates to false.

Git

Spawns Git and waits for it to complete.


Arguments	String	Optional	Git command line arguments
BaseDir	String	Optional	Base directory for running the command
ErrorLevel	Integer	Optional	The minimum exit code, which is treated as an error.
If	Condition	Optional	Whether to execute this task. It is ignored if this condition evaluates to false.

Git-Clone

Clones a Git repository into a local path.


Dir	String	Required	Directory for the repository
Remote	String	Optional	The remote to add
Branch	String	Required	The branch to check out on the remote
ConfigFile	String	Optional	Configuration file for the repo. This can be used to set up a remote to be fetched and/or provide credentials.
If	Condition	Optional	Whether to execute this task. It is ignored if this condition evaluates to false.

Helm

Spawns Helm and waits for it to complete.


Chart	String	Required	Helm command line arguments
Deployment	String	Required	Name of the release
Namespace	String	Optional	The Kubernetes namespace
KubeContext	String	Optional	The kubectl context
KubeConfig	String	Optional	The kubectl config file to use
Values	String	Optional	Values to set for running the chart
ValuesFile	String	Optional	Values to set for running the chart
Environment	String	Optional	Environment variables to set
EnvironmentFile	String	Optional	File to parse environment variables from
Arguments	String	Optional	Additional arguments
WorkingDir	String	Optional	Base directory for running the command
If	Condition	Optional	Whether to execute this task. It is ignored if this condition evaluates to false.

Horde-CreateReport

Creates a Horde report file, which will be displayed on the dashboard with any job running this task.


Name	String	Required	Name for the report
Scope	String	Required	Where to display the report
Placement	String	Required	Where to show the report
Text	String	Required	Text to be displayed
If	Condition	Optional	Whether to execute this task. It is ignored if this condition evaluates to false.

Kubectl

Spawns Kubectl and waits for it to complete.


Arguments	String	Required	Command line arguments
BaseDir	String	Optional	Base directory for running the command
If	Condition	Optional	Whether to execute this task. It is ignored if this condition evaluates to false.

Log

Print a message (and other optional diagnostic information) to the output log.


Message	String	Optional	Message to print out.
Files	FileSpec	Optional	If specified, causes the given list of files to be printed after the given message.
IncludeContents	Boolean	Optional	If specified, causes the contents of the given files to be printed out.
If	Condition	Optional	Whether to execute this task. It is ignored if this condition evaluates to false.

ModifyConfig

Modifies a config file


File	FileSpec	Required	Path to the config file
Section	String	Required	The section name to modify
Key	String	Required	The property name to set
Value	String	Required	The property value to set
Tag	TagList	Optional	Tag to be applied to the extracted files
If	Condition	Optional	Whether to execute this task. It is ignored if this condition evaluates to false.

ModifyJsonValue

Modifies json files by setting a value specified in the key path


Files	FileSpec	Required	json file paths which will be modified
KeyPath	String	Required	json key path to find in each file
NewValue	Integer	Required	new value to apply
If	Condition	Optional	Whether to execute this task. It is ignored if this condition evaluates to false.

Move

Moves files from one directory to another.


Files	FileSpec	Optional	Optional filter to be applied to the list of input files.
From	FileSpec	Required	The pattern(s) to copy from (for example, Engine/*.txt).
To	FileSpec	Required	The directory to copy to.
Overwrite	Boolean	Optional	Optionally if files should be overwritten, defaults to false.
Tag	TagList	Optional	Tag to be applied to build products of this task.
ErrorIfNotFound	Boolean	Optional	Whether or not to throw an error if no files were found to copy
If	Condition	Optional	Whether to execute this task. It is ignored if this condition evaluates to false.

MsBuild

Executes MsBuild


Project	String	Required	The C# project file to compile. Using semicolons, more than one project file can be specified.
Configuration	String	Optional	The configuration to compile.
Platform	String	Optional	The platform to compile.
Arguments	String	Optional	Additional options to pass to the compiler.
Verbosity	String	Optional	The MSBuild output verbosity.
If	Condition	Optional	Whether to execute this task. It is ignored if this condition evaluates to false.

NuGet-LicenseCheck

Spawns Docker and waits for it to complete.


BaseDir	String	Required	Base directory for running the command
IgnorePackages	String	Optional	Specifies a list of packages to ignore for version checks, separated by semicolons. Optional version number may be specified with 'name@version' syntax.
LicenseDir	DirectoryReference	Optional	Directory containing allowed licenses
If	Condition	Optional	Whether to execute this task. It is ignored if this condition evaluates to false.

OnExit

Spawns an external executable and waits for it to complete.


Command	String	Required	Executable to spawn.
Lease	Boolean	Optional	Whether to execute on lease termination
If	Condition	Optional	Whether to execute this task. It is ignored if this condition evaluates to false.

PakFile

Creates a PAK file from a given set of files.


Files	FileSpec	Required	List of files, wildcards, and tag sets to add to the pak file, separated by ';' characters.
Output	FileReference	Required	PAK file to output.
ResponseFile	FileReference	Optional	Path to a Response File that contains a list of files to add to the pak file -- instead of specifying them individually.
RebaseDir	DirectoryList	Optional	Directories to rebase the files relative to. If specified, the shortest path under a listed directory will be used for each file.
Order	FileReference	Optional	Script that gives the order of files.
Sign	FileReference	Optional	Encryption keys for this pak file.
Compress	Boolean	Optional	Whether to compress files.
Arguments	String	Optional	Additional arguments to pass to UnrealPak.
Tag	TagList	Optional	Tag to be applied to build products of this task.
If	Condition	Optional	Whether to execute this task. It is ignored if this condition evaluates to false.

QueryTargets

Runs UBT to query all the targets for a particular project


ProjectFile	FileReference	Optional	Path to the project file to query
OutputFile	FileReference	Optional	Path to the output file to receive information about the targets
IncludeAllTargets	Boolean	Optional	Write out all targets, even if a default is specified in the BuildSettings section of the Default*.ini files.
Tag	TagList	Optional	Tag to be applied to build products of this task.
If	Condition	Optional	Whether to execute this task. It is ignored if this condition evaluates to false.

RandomData

Creates files containing random data in the specified output directory. Used for generating test data for the temp storage system.


Size	Integer	Optional	The size of each file.
Count	Integer	Optional	Number of files to write.
Different	Boolean	Optional	Whether to generate different data for each output file.
OutputDir	String	Optional	Output directory
Tag	String	Optional	Optional filter to be applied to the list of input files.
If	Condition	Optional	Whether to execute this task. It is ignored if this condition evaluates to false.

Rename

Renames a file, or group of files.


Files	FileSpec	Required	The file or files to rename.
From	String	Optional	The current file name, or pattern to match (for example, *.txt). Should not include any path separators.
To	String	Required	The new name for the file(s). Should not include any path separators.
Tag	TagList	Optional	Tag to be applied to the renamed files.
If	Condition	Optional	Whether to execute this task. It is ignored if this condition evaluates to false.

SanitizeReceipt

Task that tags build products and/or runtime dependencies by reading from *.target files.


Files	FileSpec	Required	Set of receipt files (`*.target`) to read, including wildcards and tag names, separated by semicolons.
EngineDir	DirectoryReference	Optional	Path to the Engine folder, used to expand $(EngineDir) properties in receipt files. Defaults to the Engine directory for the current workspace.
If	Condition	Optional	Whether to execute this task. It is ignored if this condition evaluates to false.

SetVersion

Updates the local version files (Engine/Source/Runtime/Launch/Resources/Version.h, Engine/Build/Build.version, and Engine/Source/Programs/Shared/Metadata.cs) with the given version information.


Change	Integer	Required	The changelist to set in the version files.
CompatibleChange	Integer	Optional	The engine compatible changelist to set in the version files.
Branch	String	Required	The branch string.
Build	String	Optional	The build version string.
BuildURL	String	Optional	The URL for a running continuous integration job.
Licensee	Boolean	Optional	Whether to set the IS_LICENSEE_VERSION flag to true.
Promoted	Boolean	Optional	Whether to set the ENGINE_IS_PROMOTED_BUILD flag to true.
SkipWrite	Boolean	Optional	If set, do not write to the files -- just return the version files that would be updated. Useful for local builds.
Tag	TagList	Optional	Tag to be applied to build products of this task.
If	Condition	Optional	Whether to execute this task. It is ignored if this condition evaluates to false.

Sign

Signs a set of executable files with an installed certificate.


Files	FileSpec	Required	List of file specifications separated by semicolons (for example, `.cpp;Engine/.../.bat`), or the name of a tag set.
Tag	TagList	Optional	Tag to be applied to build products of this task.
If	Condition	Optional	Whether to execute this task. It is ignored if this condition evaluates to false.

Spawn

Spawns an external executable and waits for it to complete.


Exe	String	Required	Executable to spawn.
Arguments	String	Optional	Arguments for the newly created process.
WorkingDir	String	Optional	Working directory for spawning the new task
Environment	String	Optional	Environment variables to set
EnvironmentFile	String	Optional	File to read environment from
LogOutput	Boolean	Optional	Write output to the log
ErrorLevel	Integer	Optional	The minimum exit code, which is treated as an error.
If	Condition	Optional	Whether to execute this task. It is ignored if this condition evaluates to false.

Stage

Stages files listed in a build receipt to an output directory.


Project	FileReference	Optional	The project that this target belongs to.
Target	String	Required	Name of the target to stage.
Platform	UnrealTargetPlatform	Required	Platform to stage.
Configuration	UnrealTargetConfiguration	Required	Configuration to be staged.
Architecture	String	Optional	Architecture to be staged.
ToDir	DirectoryReference	Required	Directory that the receipt files should be staged to.
Overwrite	Boolean	Optional	Whether to overwrite existing files.
Tag	TagList	Optional	Tag to be applied to build products of this task.
If	Condition	Optional	Whether to execute this task. It is ignored if this condition evaluates to false.

Strip

Strips debugging information from a set of files.


Platform	UnrealTargetPlatform	Required	The platform toolchain to strip binaries.
BaseDir	DirectoryReference	Optional	The directory to find files in.
Files	FileSpec	Required	List of file specifications separated by semicolons (for example, `Engine/.../*.pdb`), or the name of a tag set.
OutputDir	DirectoryReference	Optional	Output directory for the stripped files. Defaults to the input path, overwriting the input files.
Tag	TagList	Optional	Tag to be applied to build products of this task.
If	Condition	Optional	Whether to execute this task. It is ignored if this condition evaluates to false.

Submit

Creates a new changelist and submits a set of files to a Perforce stream.


Description	String	Required	The description for the submitted changelist.
Files	FileSpec	Required	The files to submit.
FileType	String	Optional	The Perforce file type for the submitted files (for example, binary+FS32).
Workspace	String	Optional	The workspace name. If specified, a new workspace will be created using the given stream and root directory to submit the files. If not, the current workspace will be used.
Stream	String	Optional	The stream for the workspace -- defaults to the current stream. Ignored unless the Workspace attribute is also specified.
Branch	String	Optional	Branch for the workspace (legacy P4 depot path). May not be used in conjunction with Stream.
RootDir	DirectoryReference	Optional	Root directory for the stream. If not specified, defaults to the current root directory.
RevertUnchanged	Boolean	Optional	Whether to revert unchanged files before attempting to submit.
Force	Boolean	Optional	Force the submit to happen -- even if a resolve is needed (always accept current version).
P4Verbose	Boolean	Optional	Allow verbose P4 output (spew).
If	Condition	Optional	Whether to execute this task. It is ignored if this condition evaluates to false.

SymStore

Task that strips symbols from a set of files.


Platform	UnrealTargetPlatform	Required	The platform toolchain required to handle symbol files.
Files	String	Required	List of output files. PDBs will be extracted from this list.
StoreDir	String	Required	Output directory for the compressed symbols.
Product	String	Required	Name of the product for the symbol store records.
Branch	String	Optional	Name of the Branch to base all the depot source files from. Used when IndexSources is true (may be used only on some platforms).
Change	Integer	Optional	Changelist to which all the depot source files have been synced to. Used when IndexSources is true (may be used only on some platforms).
BuildVersion	String	Optional	BuildVersion associated with these symbols. Used for clean-up in AgeStore by matching this version against a directory name in a build share.
IndexSources	Boolean	Optional	Whether to include the source code index in the uploaded symbols. When enabled, the task will generate data required by a source server (only some platforms and source control servers are supported). The source server allows debuggers to automatically fetch the matching source code when debbugging builds or analyzing dumps.
SourceFiles	String	Optional	Filter for the depot source files that are to be indexed. It's a semicolon-separated list of perforce filter e.g. Engine/....cpp;Engine/....h. It may also be a name of a previously defined tag e.g. "#SourceFiles Used when IndexSources is true (may be used only on some platforms).
If	Condition	Optional	Whether to execute this task. It is ignored if this condition evaluates to false.

Tag

Applies a tag to a given set of files. The list of files is found by enumerating the tags and file specifications given by the 'Files' parameter. From this list, any files not matched by the 'Filter' parameter are removed, followed by any files matched by the 'Except' parameter.


BaseDir	DirectoryReference	Optional	Set the base directory to resolve relative paths and patterns against. If set, any absolute patterns (for example, /Engine/Build/...) are taken to be relative to this path. If not, they are taken to be truly absolute.
Files	FileSpec	Optional	Set of files to work from, including wildcards and tag names, separated by semicolons. If set, resolved relative to BaseDir, otherwise resolved to the branch root directory.
FileLists	FileSpec	Optional	Set of text files to add additional files from. Each file list should have one file per line.
Filter	FileSpec	Optional	Patterns to filter the list of files by, including tag names or wildcards. If set, may include patterns that apply to the base directory. If not specified, defaults to all files.
Except	FileSpec	Optional	Set of patterns to exclude from the matched list. May include tag names of patterns that apply to the base directory.
With	TagList	Required	Name of the tag to apply.
If	Condition	Optional	Whether to execute this task. It is ignored if this condition evaluates to false.

TagReceipt

Task that tags build products and/or runtime dependencies by reading from *.target files.


Files	FileSpec	Required	Set of receipt files (*.target) to read, including wildcards and tag names, separated by semicolons.
EngineDir	DirectoryReference	Optional	Path to the Engine folder, used to expand $(EngineDir) properties in receipt files. Defaults to the Engine directory for the current workspace.
ProjectDir	DirectoryReference	Optional	Path to the project folder, used to expand $(ProjectDir) properties in receipt files. Defaults to the Engine directory for the current workspace -- DEPRECATED.
BuildProducts	Boolean	Optional	Whether to tag the Build Products listed in receipts.
BuildProductType	String	Optional	Which type of Build Products to tag (see TargetReceipt.cs - UnrealBuildTool.BuildProductType for valid values).
RuntimeDependencies	Boolean	Optional	Whether to tag the Runtime Dependencies listed in receipts.
StagedFileType	String	Optional	Which type of Runtime Dependencies to tag (see TargetReceipt.cs - UnrealBuildTool.StagedFileType for valid values).
With	TagList	Required	Name of the tag to apply.
If	Condition	Optional	Whether to execute this task. It is ignored if this condition evaluates to false.

Unzip

Extract files from a zip archive.


ZipFile	FileSpec	Required	Path to the zip file to extract.
ToDir	DirectoryReference	Required	Output directory for the extracted files.
UseLegacyUnzip	Boolean	Optional	Whether or not to use the legacy unzip code.
OverwriteFiles	Boolean	Optional	Whether or not to overwrite files during unzip.
Tag	TagList	Optional	Tag to be applied to the extracted files.
If	Condition	Optional	Whether to execute this task. It is ignored if this condition evaluates to false.

Upload

Uploads a set of files to Jupiter for future retrival


FromDir	DirectoryReference	Required	The directory to read compressed files from.
Files	FileSpec	Optional	List of file specifications separated by semicolons (for example, `.cpp;Engine/.../.bat`), or the name of a tag set. Relative paths are taken from FromDir.
JupiterNamespace	String	Required	The jupiter namespace used to upload the build. Used to control who has access to the build.
JupiterKey	String	Required	The key of the build as will be used to download the build again. This has to be globally unique for this particular upload.
ArchiveType	String	Required	The type of archive these files are from, will be added to the metadata
ProjectName	String	Required	The name of the project this set of files are associated with, will be added to the metadata
Branch	String	Required	The source control branch these files were generated from, will be added to the metadata
Changelist	String	Required	The source control revision these files were generated from, will be added to the metadata
JupiterUrl	String	Required	Specify the url to the Jupiter instance to upload to
AdditionalMetadata	String	Optional	Semi-colon separated list of '=' separated key value mappings to add to the metadata. E.g. Foo=bar;spam=eggs
LimitMemoryUsage	Boolean	Optional	If enabled file content is not kept in memory, results in lower memory usage but increased io as file contents needs to be read multiple times (for hashing as well as during upload)
If	Condition	Optional	Whether to execute this task. It is ignored if this condition evaluates to false.

Wait

Waits a defined number of seconds.


Seconds	Integer	Required	Number of seconds to wait.
If	Condition	Optional	Whether to execute this task. It is ignored if this condition evaluates to false.

WriteJsonValue

Modifies json files by setting a value specified in the key path


File	FileSpec	Required	Json file(s) which will be modified
Key	String	Required	Json element to set in each file. Syntax for this string is a limited subset of JsonPath notation, and may support object properties and array indices. Any array indices which are omitted or out of range will add a new element to the array (eg. '$.foo.bar[]' will add an element to the 'bar' array in the 'foo' object).
Value	String	Required	New value to set. May be any value JSON value (string, array, object, number, boolean or null).
If	Condition	Optional	Whether to execute this task. It is ignored if this condition evaluates to false.

WriteTextFile

Writes text to a file.


File	FileReference	Required	Path to the file to write.
Append	Boolean	Optional	Optional, whether or not to append to the file rather than overwrite.
Text	String	Optional	The text to write to the file.
Files	FileSpec	Optional	If specified, causes the given list of files to be printed after the given message.
Tag	TagList	Optional	Tag to be applied to build products of this task.
If	Condition	Optional	Whether to execute this task. It is ignored if this condition evaluates to false.

ZenExportSnapshot

Exports an snapshot from Zen to a specified destination.


Project	FileReference	Optional	The project from which to export the snapshot
Platform	String	Optional	The target platform(s) to export the snapshot for
SnapshotDescriptorFile	FileReference	Optional	A file to create with information about the snapshot that was exported
DestinationStorageType	String	Required	The type of destination to export the snapshot to (cloud, ...)
DestinationCloudHost	String	Optional	The host name to use when exporting to a cloud destination
DestinationCloudNamespace	String	Optional	The namespace to use when exporting to a cloud destination
DestinationCloudIdentifier	String	Optional	The identifier to use when exporting to a cloud destination
DestinationCloudBucket	String	Optional	A custom bucket name to use when exporting to a cloud destination
If	Condition	Optional	Whether to execute this task. It is ignored if this condition evaluates to false.

Zip

Compresses files into a zip archive.


FromDir	DirectoryReference	Required	The directory to read compressed files from.
Files	FileSpec	Optional	List of file specifications separated by semicolons (for example, `.cpp;Engine/.../.bat`), or the name of a tag set. Relative paths are taken from FromDir.
ExecutableFiles	FileSpec	Optional	List of files that should have an executable bit set.
ZipFile	FileReference	Required	The zip file to create.
Tag	TagList	Optional	Tag to be applied to the created zip file.
If	Condition	Optional	Whether to execute this task. It is ignored if this condition evaluates to false.