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### 1. The Workflow Bottleneck & Problem Statement AI coding agents frequently ship functional backend logic while introducing subtle mobile horizontal scrollbars, clipped badges, or broken dark-mode contrast. ### 2. Synthesized Agent Architecture & Connected Stack **Automated Multi-Viewport Visual Regression & Overflow Gate on Every PR** (`visual-regression-ci-pipeline`) is a verified production blueprint curated from **@iraiansar**'s real-world implementation. - **Primary Capability:** Runs Playwright and Visual Sentinel MCP against preview deployments on every pull request to block CSS overflow, z-index collisions, and dark-mode regressions. - **Connected Tool Stack:** Visual Sentinel MCP, Playwright MCP, GitHub Actions, Cloudflare Pages - **Execution Governance:** `Read-Only Discovery` → `Deterministic Policy Check` → `Ask-First Human Approval` - **Certified Builder Source:** [@iraiansar](https://github.com/iraiansar/visual-sentinel) ### 3. Step-by-Step Implementation Blueprint 1. **Trigger & Data Ingestion:** Configure your agent routine to watch **Visual Sentinel MCP** on a scheduled cadence or event webhook. Treat all external text as untrusted data inside XML fences. 2. **Cross-System Enrichment & Verification:** Query **Playwright MCP** to validate live capacity, account status, or code state before generating recommendations. 3. **Human-in-the-Loop Action Staging:** Post a structured summary card to **Cloudflare Pages** with 1-click approve/edit controls so your team retains full oversight. ### 4. Copy-Paste System Prompt & Routine Configuration ```text Implement the 'Automated Multi-Viewport Visual Regression & Overflow Gate on Every PR' workflow curated with @iraiansar. 1. OBJECTIVE: Runs Playwright and Visual Sentinel MCP against preview deployments on every pull request to block CSS overflow, z-index collisions, and dark-mode regressions. 2. CONNECTED TOOL STACK: Visual Sentinel MCP, Playwright MCP, GitHub Actions, Cloudflare Pages 3. STEP-BY-STEP EXECUTION LOOP: - Step A (Ingest & Ground): Query live inputs from Visual Sentinel MCP and cross-reference state in Playwright MCP. - Step B (Analyze & Validate): Apply strict filtering rules, verify schema/policy constraints, and flag any anomalies or missing fields. - Step C (Stage & Report): Prepare the structured output, draft replies/tickets in Cloudflare Pages, and request human confirmation before executing any external send or production write. ``` ### 5. Measured ROI & Production Impact - **Verified Outcome:** Catches 100% of mobile viewport overflow and contrast regressions before merge. - **Builder Portfolio:** [Explore all capabilities by @iraiansar →](/u/iraiansar)

Tags: #visual-regression-ci-pipeline#use-case#engineering#iraiansar#visual-sentinel-mcp#playwright-mcp

View All 5 Items by @iraiansar →

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Argos CI Visual Testing — Automated PR Screenshot Review & Approval MCP

Inspect Argos CI visual regression builds on GitHub Pull Requests, review changed DOM regions, and approve or reject visual diffs from your coding agent.