GitHub Actions Rerun Waste Audit

Use this skill to measure CI waste caused by reruns and repeated attempts in GitHub Actions.

What this skill does

• Reads one or more run JSON exports (gh run view --json ...)
• Groups attempts by repository + workflow + branch + commit + job name
• Estimates rerun waste from all attempts except the latest attempt in each group
• Flags severity using waste-minute thresholds
• Emits text or JSON output for triage dashboards and CI quality reviews

Inputs

Optional:

• RUN_GLOB (default: artifacts/github-actions/*.json)
• TOP_N (default: 20)
• OUTPUT_FORMAT (text or json, default: text)
• WARN_MINUTES (default: 10)
• CRITICAL_MINUTES (default: 30)
• FAIL_ON_CRITICAL (0 or 1, default: 0)
• WORKFLOW_MATCH, WORKFLOW_EXCLUDE (regex, optional)
• JOB_MATCH, JOB_EXCLUDE (regex, optional)
• REPO_MATCH, REPO_EXCLUDE (regex, optional)
• BRANCH_MATCH, BRANCH_EXCLUDE (regex, optional)

Collect run JSON

gh run view <run-id> --json databaseId,workflowName,headBranch,headSha,runAttempt,url,repository,jobs \
  > artifacts/github-actions/run-<run-id>.json

If runAttempt is missing, this skill also checks run_attempt and job-level attempt.

Run

Text report:

RUN_GLOB='artifacts/github-actions/*.json' \
WARN_MINUTES=8 \
CRITICAL_MINUTES=20 \
bash skills/github-actions-rerun-waste-audit/scripts/rerun-waste-audit.sh

JSON output + fail gate:

RUN_GLOB='artifacts/github-actions/*.json' \
OUTPUT_FORMAT=json \
FAIL_ON_CRITICAL=1 \
bash skills/github-actions-rerun-waste-audit/scripts/rerun-waste-audit.sh

Repo/workflow filter:

RUN_GLOB='artifacts/github-actions/*.json' \
REPO_MATCH='^flowcreatebot/' \
WORKFLOW_MATCH='(CI|Build)' \
bash skills/github-actions-rerun-waste-audit/scripts/rerun-waste-audit.sh

Run with bundled fixtures:

RUN_GLOB='skills/github-actions-rerun-waste-audit/fixtures/*.json' \
bash skills/github-actions-rerun-waste-audit/scripts/rerun-waste-audit.sh

Output contract

• Exit 0 in reporting mode
• Exit 1 when FAIL_ON_CRITICAL=1 and at least one critical group exists
• Text output includes summary, thresholds, and top rerun-waste groups
• JSON output includes summary, ranked groups, and critical_groups