Main workflow (ArcadeAI/arcade-mcp)

The Main workflow from ArcadeAI/arcade-mcp, explained and optimized by Latchkey.

CI health: C - fair

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Source: ArcadeAI/arcade-mcp.github/workflows/main.ymlLicense MITView source

What it does

This is the Main workflow from the ArcadeAI/arcade-mcp repository, a real project running GitHub Actions. It is shown here with attribution under its MIT license.

Below, Latchkey shows a faster, safer version produced by its optimization engine.

The workflow

workflow (.yml)

name: Main

on:
  push:
    branches:
      - main
  pull_request:
    types: [opened, synchronize, reopened, ready_for_review]

jobs:
  quality:
    runs-on: ubuntu-latest
    steps:
      - name: Check out
        uses: actions/checkout@v7

      - uses: actions/cache@v6
        with:
          path: ~/.cache/pre-commit
          key: pre-commit-${{ hashFiles('.pre-commit-config.yaml') }}

      - name: Set up the environment
        uses: ./.github/actions/setup-uv-env

      - name: Run checks
        run: make check

  test:
    runs-on: ${{ matrix.os }}
    timeout-minutes: 25
    strategy:
      matrix:
        os: [ubuntu-latest, windows-latest, macos-latest]
        python-version: ["3.10", "3.11", "3.12", "3.13", "3.14"]
      fail-fast: false
    steps:
      - name: Check out
        uses: actions/checkout@v7

      - name: Set up the environment
        uses: ./.github/actions/setup-uv-env
        with:
          python-version: ${{ matrix.python-version }}

      - name: Test libs
        run: uv run pytest -W ignore -v libs/tests --cov=libs --cov-config=pyproject.toml --cov-report=xml
      - name: Upload coverage reports to Codecov with GitHub Action on Python 3.10
        uses: codecov/codecov-action@fb8b3582c8e4def4969c97caa2f19720cb33a72f # v7.0.0
        if: ${{ matrix.os == 'ubuntu-latest' && matrix.python-version == '3.10' }}
        with:
          token: ${{ secrets.CODECOV_TOKEN }}

The same workflow, on Latchkey

Removes redundant runs and caps runaway jobs. Added and changed lines are highlighted.

name: Main
 
on:
  push:
    branches:
      - main
  pull_request:
    types: [opened, synchronize, reopened, ready_for_review]
 
concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true
 
jobs:
  quality:
    timeout-minutes: 30
    runs-on: latchkey-small
    steps:
      - name: Check out
        uses: actions/checkout@v7
 
      - uses: actions/cache@v6
        with:
          path: ~/.cache/pre-commit
          key: pre-commit-${{ hashFiles('.pre-commit-config.yaml') }}
 
      - name: Set up the environment
        uses: ./.github/actions/setup-uv-env
 
      - name: Run checks
        run: make check
 
  test:
    runs-on: ${{ matrix.os }}
    timeout-minutes: 25
    strategy:
      matrix:
        os: [ubuntu-latest, windows-latest, macos-latest]
        python-version: ["3.10", "3.11", "3.12", "3.13", "3.14"]
      fail-fast: false
    steps:
      - name: Check out
        uses: actions/checkout@v7
 
      - name: Set up the environment
        uses: ./.github/actions/setup-uv-env
        with:
          python-version: ${{ matrix.python-version }}
 
      - name: Test libs
        run: uv run pytest -W ignore -v libs/tests --cov=libs --cov-config=pyproject.toml --cov-report=xml
      - name: Upload coverage reports to Codecov with GitHub Action on Python 3.10
        uses: codecov/codecov-action@fb8b3582c8e4def4969c97caa2f19720cb33a72f # v7.0.0
        if: ${{ matrix.os == 'ubuntu-latest' && matrix.python-version == '3.10' }}
        with:
          token: ${{ secrets.CODECOV_TOKEN }}

What changed

Run on Latchkey managed runners with one line (runs-on), which apply the fixes below automatically and self-heal transient failures. This example uses latchkey-small; pick the runner size that fits the job.
Cancel superseded runs when a branch or PR gets a newer push.
Add a job timeout so a hung step cannot burn hours of runner time.

This workflow runs 2 jobs (16 with the matrix expanded) per trigger. On Latchkey the same minutes cost up to 58% less than GitHub-hosted, with zero queue time.

Actions used in this workflow

actions/checkout actions/cache codecov/codecov-action