{
  "id": "skl_d61b601f8d77",
  "slug": "skill-visual-sentinel-qa",
  "asset_type": "skill",
  "name": "Visual Sentinel Pixel-Diff & Layout Regression Gate Playbook",
  "tagline": "Automated visual regression gating for CI/CD and autonomous coding agents: capture deterministic baseline screenshots, compute perceptual pixel diffs, and ",
  "description_md": "### Overview & Capability Scope\n**Visual Sentinel Pixel-Diff & Layout Regression Gate Playbook** (`skill-visual-sentinel-qa`) is a verified, portable `SKILL.md` playbook curated with **@iraiansar** for Grok Bot (`x.ai/bot/`), Claude Code (`~/.claude/skills/`), and Cursor (`.cursor/skills/`).\n\nAutomated visual regression gating for CI/CD and autonomous coding agents: capture deterministic baseline screenshots, compute perceptual pixel diffs, and block broken UI PRs.\n\n### Required Stack & Tooling\n- **Primary Stack:** Visual Sentinel, Playwright, CI/CD Visual Diff, UI QA\n- **Category:** `engineering`\n- **Source & Reference:** [https://github.com/iraiansar/visual-sentinel](https://github.com/iraiansar/visual-sentinel)\n\n### Quickstart Installation\nInstall this `SKILL.md` playbook directly into your agent workspace:\n```bash\nnpx lightstate install skill-visual-sentinel-qa\n```\nOr copy the complete `SKILL.md` specification below into `.cursor/skills/skill-visual-sentinel-qa/SKILL.md` or `~/.claude/skills/skill-visual-sentinel-qa/SKILL.md`.\n\n### Verification Commands\n```bash\nnpx playwright test --update-snapshots\nnpx visual-sentinel compare\n```\n",
  "primary_category": "engineering",
  "categories_json": "[\"engineering\", \"skills\"]",
  "tags_json": "[\"visual-sentinel\", \"playwright\", \"ci/cd-visual-diff\", \"ui-qa\", \"skill-md\", \"engineering\"]",
  "compatible_agents_json": "[\"grok-bot\", \"claude-code\", \"cursor\"]",
  "integrations_json": "[\"Visual Sentinel\", \"Playwright\", \"CI/CD Visual Diff\"]",
  "includes_json": "[]",
  "safety_level": "Read-Only / Ask-First",
  "safety_summary": "Verified capability blueprint by @iraiansar.",
  "share_url": "",
  "deep_link_uri": "",
  "mcp_endpoint": "",
  "mcp_transport": "http",
  "install_command": "npx lightstate install skill-visual-sentinel-qa",
  "skill_markdown": "---\nname: visual-sentinel-qa\ndescription: Automated visual regression gating for CI/CD and autonomous coding agents: capture deterministic baseline screenshots, compute perceptual pixel diffs, and block broken UI PRs. Use when working with Visual Sentinel, Playwright, CI/CD Visual Diff, UI QA.\ntriggers:\n  - visual sentinel qa\n  - visual sentinel\n  - playwright\n---\n\n# Visual Sentinel Pixel-Diff & Layout Regression Gate Playbook\n\n## 1. When to Use This Skill\nLoad `skill-visual-sentinel-qa` whenever an engineering or operations task involves **Visual Sentinel, Playwright, CI/CD Visual Diff, UI QA**. Specifically:\n- Automated visual regression gating for CI/CD and autonomous coding agents: capture deterministic baseline screenshots, compute perceptual pixel diffs, and block broken UI PRs.\n- Designing, reviewing, or debugging production configurations without guesswork or deprecated flags.\n- Running deterministic pre-flight and post-execution verification checks before reporting completion.\n\n## 2. Prerequisites & Required Environment\n- **Target Stack:** Visual Sentinel, Playwright, CI/CD Visual Diff, UI QA\n- **Permissions:** Read-only inspection by default; ask for explicit confirmation before executing destructive mutations or production deployments.\n- **Reference Repository:** `https://github.com/iraiansar/visual-sentinel`\n\n## 3. Step-by-Step Execution Playbook\n1. **Context & Configuration Discovery:**\n   Inspect existing project manifests (`package.json`, `wrangler.jsonc`, schema files, or environment declarations) before proposing changes. Never overwrite existing bindings or credentials blindly.\n2. **Deterministic Implementation:**\n   Apply the canonical patterns for **Visual Sentinel**:\n   - Enforce strict schema/type validation at every external boundary.\n   - Include explicit error handling, structured logging, and idempotency keys on all mutating calls.\n   - Keep secrets in environment variables or secret stores—never hardcode tokens in source files.\n3. **Verification & Regression Gate:**\n   Run the verification commands below and inspect both exit codes and output payloads before marking the task complete.\n\n## 4. Reference Commands & CLI Workflow\n```bash\nnpx playwright test --update-snapshots\nnpx visual-sentinel compare\n```\n\n## 5. Edge Cases & Anti-Hallucination Guardrails\n- **Zero Unverified Claims:** Never claim a deployment, migration, or API call succeeded without inspecting the command output or HTTP status code.\n- **Rollback Readiness:** Always record the previous state or migration version so changes can be reverted cleanly if downstream health checks fail.\n",
  "starter_prompt": "Load the Visual Sentinel Pixel-Diff & Layout Regression Gate Playbook (skill-visual-sentinel-qa) playbook. First inspect our current configuration and codebase for Visual Sentinel, Playwright, CI/CD Visual Diff, UI QA. Then propose a concrete, step-by-step implementation plan following the skill-visual-sentinel-qa guardrails, run the non-destructive verification commands (npx playwright test --update-snapshots), and summarize any findings, risks, or required environment variables before making production changes.",
  "project_url": "https://github.com/iraiansar/visual-sentinel",
  "repo_url": "https://github.com/iraiansar/visual-sentinel",
  "creator_handle": "iraiansar",
  "creator_name": "Irai Ansar (@iraiansar)",
  "creator_avatar_url": null,
  "creator_url": "https://x.com/iraiansar",
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  "source_url": "https://github.com/iraiansar/visual-sentinel",
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  "source_origin": "certified_builder",
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  "pulse_score": 91,
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  "is_featured": 0,
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  "is_sponsored": 0,
  "sponsor_tier": "free",
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  "status": "active",
  "created_at": "2026-10-24T20:00:00Z",
  "updated_at": "2026-10-24T20:00:00Z",
  "verified_at": null,
  "primitive": "skill",
  "title": "Visual Sentinel Pixel-Diff & Layout Regression Gate Playbook",
  "description": "Automated visual regression gating for CI/CD and autonomous coding agents: capture deterministic baseline screenshots, compute perceptual pixel diffs, and ",
  "category": "engineering",
  "tags": "[\"visual-sentinel\", \"playwright\", \"ci/cd-visual-diff\", \"ui-qa\", \"skill-md\", \"engineering\"]",
  "agent_compatibility": "[\"grok-bot\", \"claude-code\", \"cursor\"]",
  "author_handle": "iraiansar",
  "author_name": "Irai Ansar (@iraiansar)",
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  "source_tweet_url": "https://github.com/iraiansar/visual-sentinel",
  "github_url": "https://github.com/iraiansar/visual-sentinel",
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