GitHub Actions can be used to do something whenever something happens in one of your GitHub repositories. If you are not familiar with GitHub Actions, check out my article Getting Started with GitHub Actions.

This also assumes you are familiar with Output. If not, check out my article GitHub Actions - Getting Started with Output.

You can

• Pass output between jobs
• Pass JSON output between jobs (this article)
• Pass input between workflows

Here is an example of how you can create JSON in job 1 and then used the JSON in job 2.

name: GitHub Action
run-name: ${{ github.workflow }} run by ${{ github.actor }}
on:
  push:
    branches:
      - main
jobs:
  job1:
    runs-on: ubuntu-latest
    steps:
      - id: set-matrix
        run: echo "matrix={\"include\":[{\"project\":\"foo\",\"hello\":\"World\"},{\"project\":\"bar\",\"hello\":\"World\"}]}" >> $GITHUB_OUTPUT     
    outputs:
      matrix: ${{ steps.set-matrix.outputs.matrix }}


  job2:
    runs-on: ubuntu-latest
    needs: job1
    strategy:
      fail-fast: false
      matrix: ${{ fromJSON(needs.job1.outputs.matrix) }}
    steps:
      # This should return: {project: foo, hello: World} and {project: bar, hello: World}
      - name: full JSON
        run: |
          echo "result = ${{ toJSON(matrix) }}"

      # This should return foo and bar
      - name: JSON project
        run: |
          echo "result = ${{ toJSON(matrix.project) }}"  

      # This should return World
      - name: JSON foo
        run: |
          echo "result = ${{ toJSON(matrix.foo) }}"