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Bento is a free command-line tool that finds the bugs that matter to you

Project description


Bento finds the bugs that matter to you.

Bento automatically tailors linters and static analysis with sane defaults on a per-project basis, letting you focus on writing code rather than configuring tools. Bento is free, fully-featured, and you can run Bento on as many projects as you like.



Bento is supported on macOS Mojave (10.14) and Ubuntu 18.04+, and requires Python version 3.6 or later and pip3. For JS projects, bento requires Node.js with version recommended in here.

  • Node.js 8 (8.10.0 and above)
  • Node.js 10 (10.13.0 and above)
  • Anything above Node.js 11.10.1

Bento supports npm-packaged JavaScript and Python, and is ideal for monorepos.

Installing Bento


pip3 install bento-cli


The workflow for Bento is:

  1. Initialize Bento
  2. Run Bento checks on your source code
  3. Fix issues or archive unnecessary warning and errors
  4. Disable undesired checks
  5. Add Bento to git pre-commit hooks
  6. Add Bento to the CI pipeline (e.g., CircleCI)

Initialize Bento for a project:

To set up for a project, navigate to the root of your project (e.g., where your .git directory is located).

Then run:

bento init

This will install and configure Bento for your project.

For git

Add this to your .gitignore:


Analyze your source code

To trigger Bento to analyze your project, run:

bento check

Archive outstanding issues

The archive command whitelists outstanding issues to fix later. This lets you continue coding with a clean slate without having to address all your tech debt as soon as you adopt a new tool. New issues introduced from this point forward will be reported by Bento until the next time you run the archive command.

bento archive

and commit the resulting .bento-baseline.yml file.

Disable and enable individual checks

Enable/disable a specific check by running:

bento enable [OPTIONS] TOOL CHECK


bento disable [OPTIONS] TOOL CHECK


  • TOOL refers to the tool that includes the check, for example, r2c.eslint
  • CHECK refers to the label for the check you want to enable, for example no-console


bento enable r2c.eslint no-console

You can find the tool and check names in the output of bento check. Bento currently supports the following tools:

Language Supported Tools
Python Bandit, Flake8
JavaScript ESLint

If there are tools you'd like us to add, please let us know by creating an issue on GitHub.

Install Bento as a pre-commit hook

Bento can install itself as a pre-commit hook, so it runs before each commit and blocks on failures.

To install bento as a pre-commit hook, simply run:

bento install-hook


Here’s a short preview of Bento in action:

Bento demo


Join the Bento channel in our community Slack to receive and give support, talk with other users, and share things about Bento. The r2c team is there and ready to help!

Terms of service and privacy

Please refer to the terms and privacy document.


Copyright (c) r2c.

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