Clone this repo:
  1. 5a7f940 roll the pin of luci-go proto (excluding buildbucket proto for now) by Yiwei Zhang · 3 days ago main
  2. 13b77f0 Roll CAS Client from 5f84a66bf481 to 5d9b6ecf87cd by chromium-autoroll · 5 days ago
  3. bc859d1 Roll CAS Client from e5e97e5390db to df39938896c4 by chromium-autoroll · 10 days ago
  4. 57e0012 [cas] Add log_level arg to archive() by Oliver Newman · 13 days ago
  5. dfb53ac Update resultdb recipe module to support gcs uri. by Jason Kusuma · 2 weeks ago


Recipes are a domain-specific language (embedded in Python) for specifying sequences of subprocess calls in a cross-platform and testable way.

They allow writing build flows which integrate with the rest of LUCI.

Documentation for the recipe engine (including this file!). Take a look at the user guide for some hints on how to get started. See the implementation details doc for more detailed implementation information about the recipe engine.


  • Sign the Google CLA.
  • Make sure your and are configured in git config.

Run the following to setup the code review tool and create your first review:

# Get `depot_tools` in $PATH if you don't have it
git clone $HOME/src/depot_tools
export PATH="$PATH:$HOME/src/depot_tools"

# Check out the recipe engine repo
git clone $HOME/src/recipes-py

# make your change
cd $HOME/src/recipes-py
git new-branch cool_feature
# hack hack
git commit -a -m "This is awesome"

# This will ask for your Google Account credentials.
git cl upload -s -r
# Wait for approval over email.
# Click "Submit to CQ" button or ask reviewer to do it for you.
# Wait for the change to be tested and landed automatically.

Use git cl help and git cl help <cmd> for more details.