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NextBlock CMS
What NextBlock CMS is
NextBlock CMS is an open-source AI website builder and CMS for teams creating live sites with a visual editor. Its block editor offers slash commands, drag-and-drop editing, live drafts, page revisions, and one-click restore. SEO checks run while writing, and linked translations connect related language versions. Pages use validated JSONB blocks in PostgreSQL and can publish without a rebuild or redeploy. Commerce features cover multi-currency pricing, tax automation, shipping zones, inventory, orders, and invoices. Checkout supports Stripe for physical products and Freemius for digital licensing. Cortex AI exposes an MCP server at /api/mcp for Claude Code, Codex, Cursor, and VS Code. The free plan costs nothing and allows unlimited pages, editors, and sites. Commerce Pro and the Cortex AI MCP Server & AI Editor License each cost $25 a month, with 30-day trials and no credit card required; the AI license requires a separate AI subscription. Deployment supports Vercel, Docker self-hosting, and environments where Next.js runs. Hosting is not included.
Who it suits
NextBlock CMS suits teams wanting an open-source visual CMS with commerce, translations, and AI-editor connections. It fits users able to deploy on Vercel, Docker, or another Next.js environment.
What it does well
- Free plan allows unlimited sites
- Visual editor includes revisions and restore
- Commerce supports currencies and tax automation
- MCP server supports several coding tools
- Supports self-hosting with Docker
What to know first
- Hosting is not included
- AI license requires separate subscription
- Paid licenses cost $25 a month
- Community marketplace is only planned
Plans
| Plan | Billed and limits | Price |
|---|---|---|
| NextBlock CMS | Free forever · open source · unlimited pages, editors, and sites | Free |
| NextBlock Commerce Pro - Commerce License | $25.00/ month · 30-day free trial · no credit card required · perpetual use | $25 a month |
| NextBlock Cortex AI MCP Server & AI Editor License | $25.00/ month · 30-day free trial · no credit card required · AI subscription billed separately; bring your own | $25 a month |
| NextBlock Cortex AI MCP Server & AI Editor License | $250.00/ year · 30-day free trial · no credit card required · AI subscription billed separately; bring your own | $250 a year |
| NextBlock Commerce Pro - Commerce License | $250.00/ year · 30-day free trial · no credit card required · perpetual use | $250 a year |
As nextblock.dev lists them, read 11 Oct 2026. The maker's own page has the final word.
Verdict
NextBlock CMS combines visual editing, publishing without rebuilds, commerce, and AI tooling in an open-source package. The free tier is broad, while hosting and separate AI subscription requirements shape the total setup.
Facts from NextBlock CMS's own pages
- AI integrations
- Cortex AI exposes an MCP server at /api/mcp for Claude Code, Codex, Cursor, and VS Code. · nextblock.dev, 11 Oct 2026
- Architecture
- Pages use validated JSONB blocks in PostgreSQL and publish without a rebuild or redeploy. · nextblock.dev, 11 Oct 2026
- Commerce
- Commerce features include multi-currency pricing, tax automation, shipping zones, inventory tracking, orders, and invoices. · nextblock.dev, 11 Oct 2026
- Custom domain
- Yes · github.com, 22 Sept 2026
- Deployment
- NextBlock can be deployed to Vercel or self-hosted with Docker; its install guide also describes deployment anywhere Next.js runs. · nextblock.dev, 11 Oct 2026
- Ecommerce support
- advanced · github.com, 22 Sept 2026
- Editing
- Its block editor supports slash commands, drag and drop, live drafts, page revisions, and one-click restore. · nextblock.dev, 11 Oct 2026
- Free plan
- Yes · github.com, 22 Sept 2026
- Headquarters
- Salaberry-de-Valleyfield, Québec, Canada · nextblock.dev, 19 Oct 2026
- Hosting included
- No · github.com, 22 Sept 2026
- Payment integrations
- Commerce checkout supports Stripe for physical products and Freemius for digital licensing. · nextblock.dev, 11 Oct 2026
- Privacy
- The privacy policy says NextBlock protects personal information under Quebec's Law 25, PIPEDA, and CASL, and uses analytics and marketing tools only with opt-in consent. · nextblock.dev, 11 Oct 2026
- Product
- NextBlock is an open-source AI website builder CMS for teams that want a live site with a visual editor. · nextblock.dev, 11 Oct 2026
- Prompt-to-site workflow
- Yes · github.com, 22 Sept 2026
- Roadmap
- A community marketplace for custom blocks, themes, integrations, and partner modules is described as planned. · nextblock.dev, 11 Oct 2026
- Security
- The site says its Supabase backend includes row-level security and that MCP tokens can be scoped, with read-only tokens unable to see write tools. · nextblock.dev, 11 Oct 2026
- SEO and translations
- The CMS includes SEO checks as users write and supports linked translations for pages. · nextblock.dev, 11 Oct 2026
- Support
- The maintainers say they typically review and reply to inquiries within one to two business days, and direct users to GitHub Discussions and Issues for community support. · nextblock.dev, 11 Oct 2026
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