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Auto assign action

An action which adds reviewers to the pull request when the pull request is opened.

From kentaro-m·Updated June 15, 2026·View on GitHub·

An action which adds reviewers to the pull request when the pull request is opened. The project is written primarily in TypeScript, distributed under the MIT License license, first published in 2019. Key topics include: github-actions, my-portfolio, pull-request, workflow.

Latest release: v2.0.2
March 20, 2026View Changelog →

Auto Assign Action

An action which adds reviewers to the pull request when the pull request is opened.

:arrow_forward: Usage

Create a workflow (e.g. .github/workflows/action.yml For more detail, refer to Configuring a workflow) for running the auto-assign action.

yml
name: 'Auto Assign' on: pull_request: types: [opened, ready_for_review] jobs: add-reviews: runs-on: ubuntu-latest steps: - uses: kentaro-m/auto-assign-action@v2.0.1 with: configuration-path: '.github/some_name_for_configs.yml' # Only needed if you use something other than .github/auto_assign.yml

Change event that triggers a workflow to the pull_request_target if you want to enable the auto-assign action when opening pull requests from fork repositories or bots like Dependabot.

Using dangerous misuse of the pull_request_target event can be a security risk, so make sure you understand pros and cons before using it.

See below for details:

diff
name: 'Auto Assign' on: - pull_request: + pull_request_target: types: [opened, ready_for_review] jobs:

Create a separate configuration file for the auto-assign action (e.g. .github/auto_assign.yml).

Single Reviewers List

Add reviewers/assignees to the pull request based on single reviewers list.

yaml
# Set to true to add reviewers to pull requests addReviewers: true # Set to true to add assignees to pull requests addAssignees: false # A list of reviewers to be added to pull requests (GitHub user name) reviewers: - reviewerA - reviewerB - reviewerC # A number of reviewers added to the pull request # Set 0 to add all the reviewers (default: 0) numberOfReviewers: 0 # A list of assignees, overrides reviewers if set # assignees: # - assigneeA # A number of assignees to add to the pull request # Set to 0 to add all of the assignees. # Uses numberOfReviewers if unset. # numberOfAssignees: 2 # A list of keywords to be skipped the process that add reviewers if pull requests include it # skipKeywords: # - wip

Multiple Reviewers List

Add reviewers/assignees to the pull request based on multiple reviewers list.

If you and peers work at the separate office or they work at the separate team by roles like frontend and backend, you might be good to use adding reviewers from each group.

yaml
# Set to true to add reviewers to pull requests addReviewers: true # Set to true to add assignees to pull requests addAssignees: false # A number of reviewers added to the pull request # Set 0 to add all the reviewers (default: 0) numberOfReviewers: 1 # A number of assignees to add to the pull request # Set to 0 to add all of the assignees. # Uses numberOfReviewers if unset. # numberOfAssignees: 2 # Set to true to add reviewers from different groups to pull requests useReviewGroups: true # A list of reviewers, split into different groups, to be added to pull requests (GitHub user name) reviewGroups: groupA: - reviewerA - reviewerB - reviewerC groupB: - reviewerD - reviewerE - reviewerF # Set to true to add assignees from different groups to pull requests useAssigneeGroups: false # A list of assignees, split into different froups, to be added to pull requests (GitHub user name) # assigneeGroups: # groupA: # - assigneeA # - assigneeB # - assigneeC # groupB: # - assigneeD # - assigneeE # - assigneeF # A list of keywords to be skipped the process that add reviewers if pull requests include it # skipKeywords: # - wip

Assign Author as Assignee

Add the PR creator as the assignee of the pull request.

yaml
# Set addAssignees to 'author' to set the PR creator as the assignee. addAssignees: author

Filter by label

The action will only run if the PR meets the specified filters

yaml
filterLabels: # Run include: - my_label - another_label # Not run exclude: - wip

Filter draft PRs

The action will only run for non-draft PRs. If you want to run for all PRs, you need to enable it to run on drafts.

yaml
runOnDraft: true

:memo: Licence

MIT

Contributors

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This article is auto-generated from kentaro-m/auto-assign-action via the GitHub API.Last fetched: 6/16/2026