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⚡ 1-Click Agent & Developer Install

Zero Auth · Ready for Grok Bot, Claude Code & Cursor

### 1. Problem & Operational Bottleneck Render Resend/MJML transactional email templates in headless Playwright across mobile and dark-mode CSS simulations before send. Built and battle-tested in production workflows by **@ericosiu** (Eric Siu (@ericosiu)). ### 2. Target Architecture & Required Stack - **Resend MCP** - **Playwright MCP** - **Visual Sentinel MCP** ### 3. Step-by-Step Implementation Blueprint 1. Connect Resend MCP, Playwright MCP, Visual Sentinel MCP and verify read-only access to the target workspace. 2. Run the discovery query for 'Transactional HTML Email Dark-Mode & Mobile Viewport Verifier' to establish baseline metrics and identify anomalies. 3. Generate a structured remediation or execution artifact with full source citations and diffs. 4. Stage any mutating actions behind an explicit human approval gate and verify final state. ### 4. Copy-Paste Agent Execution Prompt ```markdown Execute the 'Transactional HTML Email Dark-Mode & Mobile Viewport Verifier' (qa-email-template-dark-mode-and-viewport-renderer) blueprint with Resend MCP, Playwright MCP, Visual Sentinel MCP. Goal: Render Resend/MJML transactional email templates in headless Playwright across mobile and dark-mode CSS simulations before send. First inspect live state in read-only mode, validate all identifiers and metrics, and output a concrete action plan with verification commands before making any changes. ``` ### 5. Verification & Safety Guardrails - **Human-in-the-Loop Gate:** All external communications, production database mutations, and billing actions stage an explicit review diff before execution. - **Deterministic Telemetry:** Every run logs structured JSON output, latency metrics, and source citations so operators can audit every decision.

Tags: #resend-mcp#playwright-mcp#visual-sentinel-mcp#blueprint#creative-video

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