GitHub Actions Run Gap Audit

Use this skill to detect workflow groups that have gone unexpectedly quiet (stale triggers, broken schedules, disabled automation, branch drift).

What this skill does

• Reads GitHub Actions run JSON exports
• Groups by repository + workflow + branch + event
• Computes historical cadence (median and p90 interval hours)
• Compares latest inactivity gap vs historical cadence
• Scores risk severity (ok, warn, critical)
• Emits text or JSON for CI checks and automation guardrails

Inputs

Optional:

• RUN_GLOB (default: artifacts/github-actions/*.json)
• TOP_N (default: 20)
• OUTPUT_FORMAT (text or json, default: text)
• MIN_RUNS (default: 4)
• WARN_GAP_MULTIPLIER (default: 2.0)
• CRITICAL_GAP_MULTIPLIER (default: 3.5)
• MIN_WARN_GAP_HOURS (default: 12)
• MIN_CRITICAL_GAP_HOURS (default: 24)
• WORKFLOW_MATCH (regex, optional)
• WORKFLOW_EXCLUDE (regex, optional)
• BRANCH_MATCH (regex, optional)
• BRANCH_EXCLUDE (regex, optional)
• EVENT_MATCH (regex, optional)
• EVENT_EXCLUDE (regex, optional)
• REPO_MATCH (regex, optional)
• REPO_EXCLUDE (regex, optional)
• RUN_ID_MATCH (regex, optional)
• RUN_ID_EXCLUDE (regex, optional)
• RUN_URL_MATCH (regex, optional)
• RUN_URL_EXCLUDE (regex, optional)
• NOW_ISO (optional fixed evaluation time for deterministic CI tests)
• FAIL_ON_CRITICAL (0 or 1, default: 0)

Collect run JSON

gh run view <run-id> --json databaseId,workflowName,event,conclusion,headBranch,headSha,createdAt,updatedAt,startedAt,url,repository \
  > artifacts/github-actions/run-<run-id>.json

Run

Text report:

RUN_GLOB='artifacts/github-actions/*.json' \
MIN_RUNS=5 \
WARN_GAP_MULTIPLIER=2.25 \
bash skills/github-actions-run-gap-audit/scripts/run-gap-audit.sh

JSON output with fail gate:

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

Targeted run-scope triage:

RUN_GLOB='artifacts/github-actions/*.json' \
RUN_ID_MATCH='^(88|89)' \
RUN_URL_EXCLUDE='rerun' \
OUTPUT_FORMAT=json \
bash skills/github-actions-run-gap-audit/scripts/run-gap-audit.sh

Run with bundled fixtures:

RUN_GLOB='skills/github-actions-run-gap-audit/fixtures/*.json' \
NOW_ISO='2026-03-07T00:00:00Z' \
bash skills/github-actions-run-gap-audit/scripts/run-gap-audit.sh

Output contract

• Exit 0 in report mode (default)
• Exit 1 when FAIL_ON_CRITICAL=1 and one or more groups are critical
• Text mode prints summary + ranked stale workflow groups
• JSON mode prints summary + ranked groups + critical group details