token-who-am-i-action

As a GitHub Actions author, have you received GitHub token and tried to act on behave of the identity behind that token without knowing who that was? This GitHub Action helps you retrieve the identity information behind a GitHub token.

The information available from outputs:

1. login: It's commonly known as the username, e.g. my login is CatChen. When it's a bot (aka a GitHub App) login has a [bot] suffix, e.g. github-actions[bot].
2. global-id: It's a unique id across all different GitHub object types. It's mainly used in GraphQL's ID type. It matches node_id field in some REST API.
3. id: A user or bot's id in the users table. A bot will have a different id from the bots table but it's rarely used.
4. name: A user or bot's display name. It's optional for users but not for bots.
5. email: A user's email if the user chose to make it visible to the public, or a bot's email constructed by GitHub's rules, e.g. 41898282+github-actions[bot]@users.noreply.github.com.
6. type: Either User or Bot. Other less common types are not supported.
7. app-slug: The bot's username that's used in it's URL. It doesn't have the [bot] suffix. That's how it's different from login.
8. scopes: The user's permission scopes, e.g. read:org, repo. It's only available if the token is a classic PAT (Personal Access Token). It's not available for fine-grained PAT.

Usage as a Reusable Action

When writing a composite action, use this action as a step to retrieve a token's identity information:

runs:
  using: 'composite'
  steps:
    - uses: CatChen/token-who-am-i-action@v1
      id: token-who-am-i
      with:
        github-token: ${{ inputs.github-token }}

    - shell: bash
      env:
        LOGIN: ${{ steps.token-who-am-i.outputs.login }}
        GLOBAL_ID: ${{ steps.token-who-am-i.outputs.global-id }}
        ID: ${{ steps.token-who-am-i.outputs.id }}
        NAME: ${{ steps.token-who-am-i.outputs.name }}
        EMAIL: ${{ steps.token-who-am-i.outputs.email }}
        TYPE: ${{ steps.token-who-am-i.outputs.type }}
        APP_SLUG: ${{ steps.token-who-am-i.outputs.app-slug }}
        SCOPES: ${{ steps.token-who-am-i.outputs.scopes }}
      run: |
        echo "Login is $LOGIN"
        echo "Global id is $GLOBAL_ID"
        echo "Id is $ID"
        echo "Name is $NAME"
        echo "Email is $EMAIL"
        echo "Type is $TYPE"
        echo "App slug is $APP_SLUG"
        echo "Scopes are $SCOPES"

Usage as a JavaScript Package

When creating a JavaScript action, install the token-who-am-i-action package and use it to get the same information.

npm i token-who-am-i-action

Use npm from above or yarn from below to install the token-who-am-i-action package.

yarn add token-who-am-i-action

Import tokenWhoAmI function from the package and call it to retrieve the token identity information:

import { tokenWhoAmI } from 'token-who-am-i-action';

const me = await tokenWhoAmI(githubToken);

const {
  login,
  globalId,
  type,
} = me;

if (me.type === 'User') {
  const {
    id,
    name,
    email,
    scopes,
  } = me;
} else if (me.type === 'Bot') {
  const {
    appSlug,
    id,
    name,
    email,
  } = me;
}