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GitHub Actions Failure Spike Audit

通过对比近期与基线运行窗口，按工作流分组检测 GitHub Actions 失败率突增。

person作者: daniellummishubclawhub
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GitHub Actions Failure Spike Audit

Use this skill to catch workflows that recently degraded (new flaky tests, broken deploy gates, bad dependency updates, or infra outages) before they become long-running incidents.

What this skill does

  • Reads GitHub Actions run JSON exports
  • Groups by repository + workflow + branch + event
  • Splits each group into recent runs and baseline history
  • Compares recent failure rate to baseline failure rate
  • Scores severity (ok, warn, critical) using spike + recent failure rate gates
  • Emits text or JSON output for CI automation

Inputs

Optional:

  • RUN_GLOB (default: artifacts/github-actions/*.json)
  • TOP_N (default: 20)
  • OUTPUT_FORMAT (text or json, default: text)
  • RECENT_RUNS (default: 4)
  • MIN_RECENT_RUNS (default: 3)
  • MIN_BASELINE_RUNS (default: 4)
  • WARN_SPIKE_PCT (default: 15)
  • CRITICAL_SPIKE_PCT (default: 30)
  • WARN_RECENT_FAILURE_RATE (default: 25)
  • CRITICAL_RECENT_FAILURE_RATE (default: 45)
  • 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)
  • 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' \
RECENT_RUNS=8 \
WARN_SPIKE_PCT=12 \
bash skills/github-actions-failure-spike-audit/scripts/failure-spike-audit.sh

JSON output + fail gate:

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

Run against bundled fixtures:

RUN_GLOB='skills/github-actions-failure-spike-audit/fixtures/*.json' \
bash skills/github-actions-failure-spike-audit/scripts/failure-spike-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 failure-rate spike groups
  • JSON mode prints summary + ranked groups + critical groups