NextBlock CMS MCP Server認証済み注目

What is NextBlock CMS

NextBlock is a free, open-source (AGPL) CMS and website builder for Next.js 16, Supabase and Tailwind CSS: a Notion-style block editor, Live Draft Mode, a built-in SEO engine, bilingual content, media library, forms and e-commerce. Every NextBlock site ships its own MCP server at https://<your-site>/api/mcp, so a coding agent can build and edit the whole site. The endpoint listed here is the public demo instance.

What the MCP server can do

56 tools, 3 resources and 4 prompts, including:

• get_site_overview, create_page_layout, generate_jsonb_layout, insert_content_block, update_content_block
• update_site_navigation, update_navigation_bar, update_footer, update_site_identity, manage_site_theme
• create_cms_post, create_cms_product, translate_page, translate_content_bulk
• upload_media, search_stock_photos, set_content_images
• publish_content_draft: generated layouts stage as Live Drafts; nothing goes live until you publish

Prompts: build-site (interview → plan → build), build-page, clone-from-url, translate-content.

Connect in three steps

1. Scaffold a site: npx create-nextblock@latest my-site --non-interactive (Node 20+, Docker Desktop for the local profile; add --mode cloud to use a Supabase project instead). Or deploy to Vercel in one click from the repository README.
2. In the CMS open Settings → Cortex AI → MCP server access, enable the server and mint a token (read-only or read+write; revoke any time). The MCP server is part of Cortex AI, which has a free 30-day trial with no credit card.
3. Add the server to your client with the configuration above. Claude Code needs "type": "http"; Cursor infers it; VS Code uses a top-level servers block with an input prompt for the token. The CMS generates the exact snippet for each client.

Authentication

Streamable HTTP with Authorization: Bearer <token>. Tokens are per site and per scope; there is no OAuth flow and no shared credentials. The demo instance requires a token too, so use your own site for anything real.

Links

• Source and docs: https://github.com/nextblock-cms/nextblock
• Connection guide: https://nextblock.dev/article/cortex-ai-mcp-connection-guide
• Official MCP Registry entry: dev.nextblock/nextblock
• Claude Code plugin: /plugin marketplace add nextblock-cms/nextblock then /plugin install nextblock@nextblock