GitHub Actions PR Gate Health Audit

Use this skill to detect unreliable pull-request merge gates before they block developers or hide degraded CI health.

What this skill does

• Reads GitHub Actions run JSON exports
• Filters to PR/merge-gate events by default (pull_request, pull_request_target, merge_group)
• Groups by repository + workflow + event
• Scores risk using:
• failure rate
• consecutive current failures
• average queue wait before run start
• days since last successful run
• Flags warning/critical groups via configurable thresholds
• Emits text or JSON output for CI gates and operational dashboards

Inputs

Optional:

• RUN_GLOB (default: artifacts/github-actions/*.json)
• TOP_N (default: 20)
• OUTPUT_FORMAT (text or json, default: text)
• MIN_RUNS (default: 2)
• EVENT_MATCH (default: ^(pull_request|pull_request_target|merge_group)$)
• WORKFLOW_MATCH (regex, optional)
• WORKFLOW_EXCLUDE (regex, optional)
• REPO_MATCH (regex, optional)
• REPO_EXCLUDE (regex, optional)
• FAIL_WARN_PERCENT (default: 15)
• FAIL_CRITICAL_PERCENT (default: 30)
• QUEUE_WARN_SECONDS (default: 120)
• QUEUE_CRITICAL_SECONDS (default: 300)
• SUCCESS_STALE_DAYS (default: 3)
• WARN_SCORE (default: 25)
• CRITICAL_SCORE (default: 45)
• FAIL_ON_CRITICAL (0 or 1, default: 0)

Collect run JSON

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

Run

Text report:

RUN_GLOB='artifacts/github-actions/*.json' \
EVENT_MATCH='^(pull_request|merge_group)$' \
MIN_RUNS=3 \
bash skills/github-actions-pr-gate-health-audit/scripts/pr-gate-health-audit.sh

JSON output with fail gate:

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

Run with bundled fixtures:

RUN_GLOB='skills/github-actions-pr-gate-health-audit/fixtures/*.json' \
bash skills/github-actions-pr-gate-health-audit/scripts/pr-gate-health-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 PR gate risk groups
• JSON mode prints summary + scored groups + critical group details