/finops:waste

Identify GitHub Actions waste patterns and provide actionable fix suggestions. Analyzes skipped runs, bot triggers, missing concurrency groups, and missing path filters.

Context

• Current repo URL: !git remote get-url origin

• Workflow files: !find .github/workflows -maxdepth 1 ( -name '.yml' -o -name '.yaml' )

Parameters

Parameter Description Default

repo

Repository in owner/name format Current repository

Execution

1. Run API-based waste analysis:

bash "${SKILL_DIR}/scripts/waste-analysis.sh" "$REPO"

2. Workflow file analysis (requires local filesystem):

echo "" echo "=== Workflow File Analysis ==="

for f in .github/workflows/.yml .github/workflows/.yaml 2>/dev/null; do [ -f "$f" ] || continue name=$(basename "$f") issues=""

Check for concurrency

if ! grep -q "concurrency:" "$f"; then issues="${issues}missing-concurrency " fi

Check for path filters (on push/pull_request without paths)

if grep -qE "^\s*(push|pull_request):" "$f" && ! grep -q "paths:" "$f"; then issues="${issues}no-path-filter " fi

Check for bot filter

if ! grep -q "github.event.sender.type" "$f" && ! grep -q "github.actor" "$f"; then issues="${issues}no-bot-filter " fi

Check for cancel-in-progress

if grep -q "pull_request:" "$f" && ! grep -q "cancel-in-progress:" "$f"; then issues="${issues}no-cancel-in-progress " fi

if [ -n "$issues" ]; then echo " $name: $issues" else echo " $name: OK" fi done

Fix Suggestions

After analysis, provide specific fixes based on findings:

Fix: Missing Concurrency Group

Add to workflow file at top level or per-job

concurrency: group: ${{ github.workflow }}-${{ github.ref }} cancel-in-progress: true # For PR workflows

Fix: Bot Trigger Filter

jobs: build: # Skip if triggered by a bot if: github.event.sender.type != 'Bot' runs-on: ubuntu-latest steps: ...

Or for specific bots:

if: github.actor != 'dependabot[bot]' && github.actor != 'renovate[bot]'

Fix: Add Path Filters

on: push: branches: [main] paths: - 'src/' - 'package.json' - 'package-lock.json' paths-ignore: - '.md' - 'docs/' - '.github/' pull_request: paths: - 'src/**' - 'package.json'

Fix: Cancel Duplicate PR Runs

concurrency: group: ${{ github.workflow }}-${{ github.head_ref || github.ref }} cancel-in-progress: true

Output Format

=== Waste Analysis: org/repo ===

=== Skipped Runs === Total runs: 100 Skipped: 15 (15%)

By workflow: CI: 10 skipped CodeQL: 5 skipped

=== Bot-Triggered Runs === Bot-triggered: 25/100 runs

By bot: dependabot[bot]: 15 runs renovate[bot]: 10 runs

=== Workflow File Analysis === ci.yml: missing-concurrency no-path-filter deploy.yml: OK codeql.yml: no-bot-filter

=== Potential Duplicate Runs === Commit abc1234: 3 runs (CI, CodeQL, Security)

=== High-Frequency Workflows === CI: 67 runs in sample - review trigger conditions

Post-actions

• Offer to apply fixes: For each issue found, offer to edit the workflow file directly

• Prioritize by impact: Focus on high-frequency workflows first

• Test recommendations: Suggest testing changes on a feature branch first

• Create tracking issue: Optionally create a GitHub issue to track optimization work