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first-contribution

★ 14 Open GitHub ↗

Automatically welcome first-time contributors on issues and pull requests

// repository documentation

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# First Contribution

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Automatically welcome first-time contributors on issues and pull requests.

## Quick start

Create `.github/workflows/welcome.yml` and paste:

```yaml
name: Welcome first-time contributor

on:
  issues:
    types: opened
  pull_request_target:
    types: opened

jobs:
  welcome:
    runs-on: ubuntu-latest
    permissions:
      issues: write # Only needed when adding comments and labels on issues
      pull-requests: write # Only needed when adding comments and labels on PRs
    steps:
      - uses: plbstl/first-contribution@2c36bdb58684587f60549a69aaa3ec00b9d5f4fe # v4.3.3
        with:
          issue-opened-msg: |
            Hey @{fc-author} 👋

Thanks for opening your first issue. Welcome!
          pr-opened-msg: |
            Hey @{fc-author} 🎉

Thanks for your first pull request. We appreciate it.
```

That's all you need.

## What it does

- Welcomes first-time issue authors and PR authors
- Lets you customize messages for open, merge, and close events
- Adds labels and emoji reactions
- Detects real first-time contributors (checks commit history too)
- Lets you skip welcoming internal contributors (org members/collaborators)

> [!TIP]
>
> Action logs can help for troubleshooting

## Configuration

### Inputs

| Input                        | Description                                                                                                                                        |
| ---------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------- |
| `token`                      | GitHub token for API access. [Default: github.token]                                                                                               |
| `issue-opened-msg`           | Message for a first-time issue                                                                                                                     |
| `pr-opened-msg`              | Message for a first-time PR                                                                                                                        |
| `issue-completed-msg`        | Message when a first-time issue is closed as completed                                                                                             |
| `issue-not-planned-msg`      | Message when a first-time issue is closed as not planned                                                                                           |
| `pr-merged-msg`              | Message when a first-time PR is merged                                                                                                             |
| `pr-closed-msg`              | Message when a first-time PR is closed (not merged)                                                                                                |
| `labels`                     | Labels to add (comma separated)                                                                                                                    |
| `issue-labels`               | Labels for issues (overrides labels)                                                                                                               |
| `pr-labels`                  | Labels for PRs (overrides labels)                                                                                                                  |
| `reactions`                  | Reactions to add (comma separated)                                                                                                                 |
| `issue-reactions`            | Reactions for issues (overrides reactions)                                                                                                         |
| `pr-reactions`               | Reactions for PRs (overrides reactions)                                                                                                            |
| `contribution-mode`          | `once` to greet only on a user’s absolute first interaction. [Default: greet on first issue and first PR]                                          |
| `fail-on-error`              | Fail the workflow if an error occurs. [Default: false]                                                                                             |
| `skip-internal-contributors` | Skip org members and repository collaborators. Needs `GH_PAT_READ_ORG` env variable. See [Skip internal contributors](#skip-internal-contributors) |

> [!NOTE]
>
> `labels` and `reactions` are only applied when a contribution is **opened**.

### Outputs

| Output        | Description               |
| ------------- | ------------------------- |
| `type`        | `issue` or `pr`           |
| `number`      | Issue or PR number        |
| `username`    | Contributor's username    |
| `comment-url` | URL of the posted comment |

## Examples

### Reactions

```yaml
- uses: plbstl/first-contribution@2c36bdb58684587f60549a69aaa3ec00b9d5f4fe # v4.3.3
  with:
    issue-reactions: eyes
    pr-reactions: +1, rocket
```

### Greet only once

```yaml
- uses: plbstl/first-contribution@2c36bdb58684587f60549a69aaa3ec00b9d5f4fe # v4.3.3
  with:
    contribution-mode: once
    issue-opened-msg: >
      Welcome @{fc-author}! Thanks for your first contribution ❤️
    pr-opened-msg: issue-opened-msg
```

### After merge (all-contributors)

```yaml
name: Add new contributor

on:
  pull_request_target:
    types: closed

jobs:
  add-contributor:
    if: github.event.pull_request.merged == true
    runs-on: ubuntu-latest
    permissions:
      pull-requests: write
    steps:
      - uses: plbstl/first-contribution@2c36bdb58684587f60549a69aaa3ec00b9d5f4fe # v4.3.3
        with:
          pr-merged-msg: >
            @all-contributors please add @{fc-author} for ${{ join(github.event.pull_request.labels.*.name, ', ') }}
```

### Advanced configuration

```yaml
name: First contribution flow

on:
  issues:
    types: [opened, closed]
  pull_request_target:
    types: [opened, closed]

jobs:
  process:
    runs-on: ubuntu-latest
    permissions:
      issues: write
      pull-requests: write
    steps:
      - uses: plbstl/first-contribution@2c36bdb58684587f60549a69aaa3ec00b9d5f4fe # v4.3.3
        env:
          GH_PAT_READ_ORG: ${{ secrets.GH_PAT_READ_ORG }} # https://github.com/settings/tokens/new?scopes=read:org
        with:
          skip-internal-contributors: true
          issue-labels: first-issue, needs-triage
          pr-labels: first-pr, needs-review
          issue-reactions: eyes
          pr-reactions: +1

# Reuse message text by referencing another input field
          pr-opened-msg: issue-opened-msg

issue-opened-msg: |
            Hey @{fc-author}!

Looks like this is your first interaction with this repository.
            Thanks for contributing.

pr-merged-msg: |
            @{fc-author}

Your first PR was merged. Thank you!
```

### Skip internal contributors

Internal contributors are organization members and repository collaborators.

To enable this behavior, set `skip-internal-contributors` to true, and populate the `GH_PAT_READ_ORG` env variable.

```yml
steps:
  - uses: plbstl/first-contribution@2c36bdb58684587f60549a69aaa3ec00b9d5f4fe # v4.3.3
    env:
      GH_PAT_READ_ORG: ${{ secrets.GH_PAT_READ_ORG }}
    with:
      skip-internal-contributors: true
      # other options...
```

Create a Personal Access Token (PAT) with <https://github.com/settings/tokens/new?scopes=read:org>. Only `read:org`
scope is needed.

## Security

This action uses `pull_request_target` so it can comment on PRs from forks.

That is safe as long as you **do not check out untrusted code from the PR**.

Safe:

```yaml
- uses: actions/checkout@commit-sha # vX.X.X
```

Unsafe:

```yaml
- uses: actions/checkout@commit-sha # vX.X.X
  with:
    ref: ${{ github.event.pull_request.head.sha }}
```

Never check out `github.event.pull_request.head.sha` inside a `pull_request_target` workflow.

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