fuzzfetch

Fuzzfetch is a python tool for retrieving builds from the Firefox-CI Taskcluster instance.

Overview

Fuzzfetch can be used to retrieve nearly any build type indexed by Firefox-CI. This includes AddressSanitizer, ThreadSanitizer, Valgrind, debug, and Fuzzing builds for Firefox, Spidermonkey, and Thunderbird.

Installation

pip install fuzzfetch

Usage

Fuzzfetch supports the following arguments:

usage: fuzzfetch [-h] [--target [TARGET ...]]
                 [--os {Android,Darwin,Linux,Windows}]
                 [--cpu {AMD64,ARM64,aarch64,arm,arm64,i686,x64,x86,x86_64}]
                 [--sim {arm,arm64}] [--build DATE|REV|NS]
                 [--branch {central,release,beta,esr-stable,esr-next,try,autoland}]
                 [--asan] [--debug] [--tsan] [--fuzzing] [--coverage]
                 [--no-opt] [--valgrind] [--afl] [--fuzzilli] [--nyx]
                 [--searchfox] [-n NAME] [-o OUT] [--dry-run]
                 [--nearest-newer | --nearest-older] [-V]

options:
  -h, --help            show this help message and exit
  -V, --version         print version and exit

Target:
  --target [TARGET ...]
                        Specify the build artifacts to download. Valid
                        options: firefox js common gtest mozharness searchfox
                        thunderbird (default: firefox)
  --os {Android,Darwin,Linux,Windows}
                        Specify the target system. (default: Linux)
  --cpu {AMD64,ARM64,aarch64,arm,arm64,i686,x64,x86,x86_64}
                        Specify the target CPU. (default: x86_64)
  --sim {arm,arm64}     Specify the simulated architecture

Build:
  --build DATE|REV|NS   Specify the build to download, (default: latest)
                        Accepts values in format YYYY-MM-DD (2017-01-01),
                        BuildID (20170101120101), revision
                        (57b37213d81150642f5139764e7044b07b9dccc3), or
                        TaskCluster namespace (gecko.v2....)

Branch:
  --branch {central,release,beta,esr-stable,esr-next,try,autoland}
                        Specify the branch to download from (default: mozilla-
                        central unless namespace build is supplied)

Build Arguments:
  --asan, -a            Download AddressSanitizer builds
  --debug, -d           Download debug builds
  --tsan, -t            Download ThreadSanitizer builds
  --fuzzing             Download fuzzing builds
  --coverage            Download coverage builds
  --no-opt              Download non-optimized builds
  --valgrind            Download Valgrind builds
  --afl                 Download AFL++ builds
  --fuzzilli            Download JS Fuzzilli builds
  --nyx                 Download Nyx builds
  --searchfox           Download Searchfox data

Misc. Arguments:
  -n, --name NAME       Specify a name (default=auto)
  -o, --out OUT         Specify output directory (default=.)
  --dry-run             Search for build and output metadata only, don't
                        download anything.

Near Arguments:
  If the specified build isn't found, iterate over builds in the specified
  direction

  --nearest-newer       Search from specified build in ascending order
  --nearest-older       Search from the specified build in descending order

Simple Build Retrieval

To retrieve the latest build from mozilla-central built with --enable-address-sanitizer and --enable-fuzzing, you can use the following:

fuzzfetch -a --fuzzing

To retrieve the latest build from mozilla-central built with --enable-debug, you can use the following:

fuzzfetch --target js -d

To retrieve a specific revision from mozilla-central, you can use the following:

fuzzfetch --build 08471023c834

Metadata

Release files for fuzzfetch 16.1.0

For a detailed explanation of source distributions (sdists) and built distributions (wheels), please see the package formats documentation.

Source distribution (sdist)

Source distribution for fuzzfetch 16.1.0
File	Size	Uploaded
fuzzfetch-16.1.0.tar.gz	569.6 kB	Dec 11, 2025	Details

Built distribution (wheel)

Table of built distributions (wheels) for fuzzfetch 16.1.0
File	Interpreter	ABI	Platform	Reset
fuzzfetch-16.1.0-py3-none-any.whl 31.2 kB Dec 11, 2025	Python 3	none	any	Details

Total release size: 600.7 kB

Release files / fuzzfetch-16.1.0.tar.gz

Download URL	fuzzfetch-16.1.0.tar.gz
Size	569.6 kB
Tags	Source
SHA-256 checksum How to use checksums	`8c50d21c01f0b72a80b1a1453e6c3650615ce72de2add017ff41e5931fb880b1`
BLAKE2b-256 checksum How to use checksums	`bfb56740955495488e65b7a82631cf5533f755bb9b90ea811fa5c0b74a0ba0b4`
Upload date	Dec 11, 2025
Uploaded using Trusted Publishing? What is trusted publishing?	No
Uploaded via	`twine/6.2.0 CPython/3.11.14`

Release files / fuzzfetch-16.1.0-py3-none-any.whl

Download URL	fuzzfetch-16.1.0-py3-none-any.whl
Size	31.2 kB
Tags	Python 3
SHA-256 checksum How to use checksums	`2cb3b1281c040e568559f59408d23534eb3d52c3bc6e53b63de85bc08c7a1b5e`
BLAKE2b-256 checksum How to use checksums	`6d76dbfd71c02e726625a9005699b62daaae3d929fe5eba611215593e587830a`
Upload date	Dec 11, 2025
Uploaded using Trusted Publishing? What is trusted publishing?	No
Uploaded via	`twine/6.2.0 CPython/3.11.14`