Open source. Built for agents and humans.

Agentic Web CMS

Turn a vibe coded website into a full CMS project with one prompt. Manage structured content, Markdown output, draft/live publishing, and MCP access from the same source of truth.

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What Headcode CMS is trying to make simple

I rewrote Headcode CMS with Codex to test a simple idea: a modern website should be created, edited, and understood by both humans and agents.

The CMS keeps the custom frontend in code, but moves the changing content into structured sections, fields, drafts, Markdown views, and MCP tools.

Start with an AI-built website

Use Codex, Claude Code, Cursor, OpenCode, or another agent to shape the layout, sections, and visual direction.

Turn it into editable content

Keep the custom design, but move copy, images, lists, links, and page structure into CMS fields.

Edit from chat with MCP

Authorized agents can inspect entries, update drafts, reorder sections, upload images, and prepare changes.

Keep humans in control

Draft/live publishing stays intentional, and the admin UI remains available for people who prefer forms.

Ship real projects

Next.js, Convex, Markdown output, sitemap, llms.txt, MCP access, and Vercel deployment are part of the default setup.

Stay open and inspectable

The source is open so developers and agents can read, explain, fork, and adapt the system.

The goal is not another heavy CMS. It is a small, inspectable base for real websites that agents can help maintain safely.

Explore the default demo website

The demo is the default Headcode CMS starter site. Open it first to see what a fresh install looks like: public pages, CMS sections, collections, Markdown output, admin UI, draft/live publishing, and MCP access in one small project.

You can also sign in to the demo admin to inspect the editing experience. Write operations are disabled there, so it is safe to explore.

Explore Demo WebsiteOpen the default Headcode CMS starter website.Markdown viewView the same homepage as Markdown for agents and AI tools.DocsRead the default developer documentation and examples.BlogSee a repeatable collection with routed entries.Admin UIInspect entries, sections, images, drafts, and publishing controls.llms.txtRead the compact site map for AI clients.MCP endpointSee the remote interface authorized AI clients use.

Why I created Headcode CMS

I have built websites for more than 20 years.

For the first time, I can see a realistic path where a complete custom website can be created, changed, documented, and deployed mostly through AI tools. That is exciting, but it also exposes a missing piece: the generated site still needs a content system that agents can understand and humans can trust.

Headcode CMS is my test of that future.

It keeps the custom frontend in source code, where developers and coding agents can shape it freely. The content lives in structured sections and fields, where humans and agents can update it safely.

The important question is no longer only: can AI build the first version of a website? The better question is: can the website remain understandable, editable, and useful after the first version exists?

Headcode CMS tries to make that practical for small and medium websites: draft/live publishing, Markdown output, MCP access, a simple admin UI, and open source code that can be inspected, forked, and adapted.

Use AI tools to create the design. Use Headcode CMS to keep the content structured. Let agents help with updates. Publish when a human is ready.