How do I install the Github Actions Branch Drift Audit skill?

Run npx skillmds@latest add dvcrn/github-actions-branch-drift-audit in your terminal (requires Node.js), paste this page's agent-chat prompt into Claude, Cursor, or any MCP-connected agent, or download the SKILL.md file and copy it into your agent's skills directory.

Is Github Actions Branch Drift Audit safe to use?

This skill has not completed SkillMD's automated safety review yet. Independent scanners report: SkillSpector: PASS, Skill Scanner: PASS. Capability flags: executes scripts. SkillMD never runs a skill's scripts for you; review the SKILL.md before installing.

Which AI agents work with Github Actions Branch Drift Audit?

This skill is tagged as working with Claude Code, Claude.ai, OpenAI Codex. SKILL.md is an open format, so most agents that read a skills directory can load it too.

Is Github Actions Branch Drift Audit free to use?

Yes. Installing skills from SkillMD is free, and the skill stays under its author's original license.

Who published Github Actions Branch Drift Audit?

dvcrn (@dvcrn) published this skill. Their other Agent Skills are listed on their SkillMD profile.

Github Actions Branch Drift Audit by dvcrn

Name: Github Actions Branch Drift Audit
Rating: 4.2 (5 reviews)
Author: dvcrn

File contents

GitHub Actions Branch Drift Audit

Use this skill to catch branch-specific CI reliability regressions before they spread into your mainline release flow.

What this skill does

Reads GitHub Actions run JSON exports
Groups runs by repository + workflow + branch
Selects a baseline branch per repository/workflow (defaults to main|master)
Compares each non-baseline branch against that baseline on:
- failure-rate drift (percentage points)
- average runtime drift (ratio)
Flags warning/critical drift severity and supports CI fail gates
Emits text or JSON output for pipeline checks and triage dashboards

Inputs

Optional:

RUN_GLOB (default: artifacts/github-actions/*.json)
TOP_N (default: 20)
OUTPUT_FORMAT (text or json, default: text)
MIN_RUNS_PER_BRANCH (default: 2)
MIN_BRANCHES (default: 2)
BASELINE_BRANCH_MATCH (default: ^(main|master)$)
WORKFLOW_MATCH (regex, optional)
WORKFLOW_EXCLUDE (regex, optional)
REPO_MATCH (regex, optional)
REPO_EXCLUDE (regex, optional)
FAILURE_DRIFT_WARN_PP (default: 10)
FAILURE_DRIFT_CRITICAL_PP (default: 25)
RUNTIME_DRIFT_WARN_RATIO (default: 1.25)
RUNTIME_DRIFT_CRITICAL_RATIO (default: 1.6)
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' \
BASELINE_BRANCH_MATCH='^(main|release/.*)$' \
MIN_RUNS_PER_BRANCH=3 \
bash skills/github-actions-branch-drift-audit/scripts/branch-drift-audit.sh

JSON output with fail gate:

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

Run with bundled fixtures:

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

Output contract

Exit 0 in report mode (default)
Exit 1 when FAIL_ON_CRITICAL=1 and one or more drift rows are critical
Text mode prints summary + ranked branch drift rows
JSON mode prints summary + drift rows + critical-only slice

---name: github-actions-branch-drift-auditdescription: Detect branch-level GitHub Actions reliability drift by comparing failure and runtime deltas against a mainline baseline.---# GitHub Actions Branch Drift AuditUse this skill to catch branch-specific CI reliability regressions before they spread into your mainline release flow.## What this skill does- Reads GitHub Actions run JSON exports- Groups runs by repository + workflow + branch- Selects a baseline branch per repository/workflow (defaults to `main|master`)- Compares each non-baseline branch against that baseline on: - failure-rate drift (percentage points) - average runtime drift (ratio)- Flags warning/critical drift severity and supports CI fail gates- Emits text or JSON output for pipeline checks and triage dashboards## InputsOptional:- `RUN_GLOB` (default: `artifacts/github-actions/*.json`)- `TOP_N` (default: `20`)- `OUTPUT_FORMAT` (`text` or `json`, default: `text`)- `MIN_RUNS_PER_BRANCH` (default: `2`)- `MIN_BRANCHES` (default: `2`)- `BASELINE_BRANCH_MATCH` (default: `^(main|master)$`)- `WORKFLOW_MATCH` (regex, optional)- `WORKFLOW_EXCLUDE` (regex, optional)- `REPO_MATCH` (regex, optional)- `REPO_EXCLUDE` (regex, optional)- `FAILURE_DRIFT_WARN_PP` (default: `10`)- `FAILURE_DRIFT_CRITICAL_PP` (default: `25`)- `RUNTIME_DRIFT_WARN_RATIO` (default: `1.25`)- `RUNTIME_DRIFT_CRITICAL_RATIO` (default: `1.6`)- `FAIL_ON_CRITICAL` (`0` or `1`, default: `0`)## Collect run JSON```bashgh run view <run-id> --json databaseId,workflowName,event,conclusion,headBranch,headSha,createdAt,updatedAt,startedAt,url,repository \ > artifacts/github-actions/run-<run-id>.json```## RunText report:```bashRUN_GLOB='artifacts/github-actions/*.json' \BASELINE_BRANCH_MATCH='^(main|release/.*)$' \MIN_RUNS_PER_BRANCH=3 \bash skills/github-actions-branch-drift-audit/scripts/branch-drift-audit.sh```JSON output with fail gate:```bashRUN_GLOB='artifacts/github-actions/*.json' \OUTPUT_FORMAT=json \FAIL_ON_CRITICAL=1 \bash skills/github-actions-branch-drift-audit/scripts/branch-drift-audit.sh```Run with bundled fixtures:```bashRUN_GLOB='skills/github-actions-branch-drift-audit/fixtures/*.json' \bash skills/github-actions-branch-drift-audit/scripts/branch-drift-audit.sh```## Output contract- Exit `0` in report mode (default)- Exit `1` when `FAIL_ON_CRITICAL=1` and one or more drift rows are critical- Text mode prints summary + ranked branch drift rows- JSON mode prints summary + drift rows + critical-only slice

Frequently asked questions

Github Actions Branch Drift Audit