marble - headless cms with an mcp server for coding agents
About Marble
A deliberately small headless CMS for a blog and its media, with an API and an MCP server. The MCP server is the reason it appears here: it lets a coding agent create posts, update content and manage media without leaving the editor, which closes the loop for anyone whose agent writes the copy as well as the code. Free tier is real rather than a trial.
Marble interface preview
Key Capabilities
MCP server, so an agent can publish and edit content without leaving the editor
Genuine free tier at 1 GB and 5,000 API requests a month, not a trial
Small on purpose: a blog, its media, and an API, rather than a platform
Clean REST API for pulling content into any front end
Paid tiers start at $5 a month
Standout Features
MCP Server
Exposes content operations over MCP, so an agent can create a post, update copy and manage media from inside the editor rather than through a dashboard.
A Free Tier That Is Not a Trial
1 GB of media and 5,000 API requests a month at no cost and no expiry. The 3-day trial applies to Pro, not to the free plan.
Perfect for
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