bernstein/action.yml at main · chernistry/bernstein · GitHub

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name: "Bernstein — Multi-Agent Orchestration"
description: "Run Bernstein to orchestrate CLI coding agents from GitHub Actions. Supports ad-hoc tasks and automatic CI-fix mode."
author: "Bernstein contributors"

branding:
  icon: "cpu"
  color: "gray-dark"

inputs:
  task:
    description: >
      Task description for Bernstein, or the literal string "fix-ci" to
      automatically download failed job logs and attempt a fix.
      Mutually exclusive with `plan`.
    required: false
    default: ""
  plan:
    description: >
      Path to a Bernstein plan YAML file (e.g. `plans/my-project.yaml`).
      When set, Bernstein runs the plan with `bernstein run <plan>` instead of
      a free-text goal. Mutually exclusive with `task`.
    required: false
    default: ""
  budget:
    description: "Dollar cap for the run (0 = unlimited)."
    required: false
    default: "5.00"
  cli:
    description: "Which agent CLI to use (claude, codex, gemini, qwen)."
    required: false
    default: "claude"
  max-retries:
    description: "Number of retry attempts in fix-ci mode."
    required: false
    default: "3"
  python-version:
    description: "Python version to install."
    required: false
    default: "3.12"
  post-comment:
    description: "Post a PR comment with orchestration summary after the run (true/false)."
    required: false
    default: "true"

outputs:
  tasks-completed:
    description: "Number of tasks Bernstein completed in this run."
    value: ${{ steps.run-bernstein.outputs.tasks_completed }}
  total-cost:
    description: "Total API cost in USD for this run."
    value: ${{ steps.run-bernstein.outputs.total_cost }}
  pr-url:
    description: "URL of a pull request created or updated by Bernstein (if any)."
    value: ${{ steps.run-bernstein.outputs.pr_url }}
  evidence-bundle-path:
    description: "Workspace-relative path to the evidence bundle (test results, logs, cost report)."
    value: ${{ steps.run-bernstein.outputs.evidence_bundle_path }}

runs:
  using: "composite"
  steps:
    - name: Set up Python
      uses: actions/setup-python@v6
      with:
        python-version: ${{ inputs.python-version }}

    - name: Install uv
      uses: astral-sh/setup-uv@v7
      with:
        enable-cache: true

    - name: Install Bernstein
      shell: bash
      run: uv tool install bernstein

    - name: Run Bernstein
      id: run-bernstein
      shell: bash
      env:
        INPUT_TASK: ${{ inputs.task }}
        INPUT_PLAN: ${{ inputs.plan }}
        INPUT_BUDGET: ${{ inputs.budget }}
        INPUT_CLI: ${{ inputs.cli }}
        INPUT_MAX_RETRIES: ${{ inputs.max-retries }}
        INPUT_POST_COMMENT: ${{ inputs.post-comment }}
        GITHUB_TOKEN: ${{ github.token }}
      run: bash "${{ github.action_path }}/action/entrypoint.sh"

    - name: Commit and push results
      shell: bash
      env:
        GITHUB_TOKEN: ${{ github.token }}
      run: |
        if [ -z "$(git status --porcelain)" ]; then
          echo "No changes to commit."
          exit 0
        fi

        git config user.name "bernstein[bot]"
        git config user.email "[email protected]"
        git add -A
        git commit -m "fix: apply bernstein auto-fix

        Triggered by GitHub Action run.
        Task: ${INPUT_TASK:-unknown}"

        # Push to the current branch
        BRANCH="$(git rev-parse --abbrev-ref HEAD)"
        git push origin "HEAD:${BRANCH}"