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TemplatesArtifacts
JSON Render Email
JSON Render Email
Generate production-ready React Email templates with live preview plus copyable HTML and plain-text output.
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Problems solved
Technical challenges this implementation handles out of the box.
- Convert prompts into responsive React Email templates
- Preview messages while copying HTML and plain text
- Enforce 600px layouts, inline styles, and bulletproof CTA buttons
Use cases
Products and workflows this pattern is designed to support.
- Product launch announcement emails
- Lifecycle onboarding sequences
- Transactional invoice and password-reset emails
- Marketing emails that need HTML and plain-text parity
Setup
Requirements, wiring steps, and what this pattern adds to your project.
Getting started
Pick how you want to pull this pattern in. Then wire env vars and routes the same way.
- 1
Download → Next.js app
Use Download → Next.js app in the preview toolbar. You get a zip scaffold (Pro downloads rewrite preview `/view/.../api/*` paths to `/api/*` automatically).
- 2
Extract the zip and install dependencies
Unzip the archive, then run `pnpm install` (or npm / yarn) in the project folder.
- 3
Fill .env.local
The download includes .env.local placeholders when needed. Add real values for: AI_GATEWAY_API_KEY.
- 4
Customize the agent and tool files
Adapt prompts, tools, and stop conditions in the generated project for your product.
- 5
Run the app and open the pattern route
Run `pnpm dev`, open the setup/checklist page if present, then navigate to the generated pattern route and verify responses.
Environment variables
AI_GATEWAY_API_KEYGet key
Capabilities
AI SDK APIs
streamTextgatewayProviders
Claude
External services
Upstash
Files added
10 filesapp/page.tsxapp/layout.tsxapp/api/json-render-email/route.tscomponents/json-render-demo.tsxcomponents/empty-state.tsxlib/catalog.tslib/registry.tsxlib/rate-limit.tslib/request-utils.tsREADME.md
Dependencies
19 totalnpm packages
13@json-render/core@json-render/react@json-render/react-email@react-email/components@react-email/renderUpstashAISDKlucide-reactNext.jsReactZodmotionsonner
Registry components
buttoncopy-buttonemptyinputscroll-areatabs
Critical files
lib/catalog.tsDefines the React Email catalog with inline prompting notes so specs always output Html -> Head -> Body -> Container structures.
lib/registry.tsxCustom React Email registry that wraps Container and Button for consistent padding/color while exposing standard components.
json-render-email/route.tsStreaming API endpoint that adds email-specific guidance to catalog.prompt(), enforces Upstash limits, and calls streamText via gateway("anthropic/claude-sonnet-4.6").
Requirements
- Complexity
- Intermediate
- Setup time
- ~6 minutes
- Node
- 24+
- Memory
- 256MB
Upstash Redis
