Grav

An open source flat-file CMS with a first-party API and modern SPA admin interface.

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Overview

Grav is a fast, flat-file content management system that uses Markdown and YAML for content and configuration. It features a modern SPA admin built on SvelteKit, a first-party REST API, and a native MCP server for AI agent integration.

Last updated: Sep 10, 2026

Key Features

Admin 2.0 SPA

A modern single-page application admin interface built with SvelteKit 5, Vite, and Tailwind 4, featuring instant navigation, customizable dashboard, real-time collaborative editing, and built-in code and media editors.

Flat-File Architecture

Content is stored as flat files (Markdown and YAML) without a database, allowing version control, portability, and zero lock-in.

Modern PHP Stack

Runs on PHP 8.3+, Symfony 7, and Twig 3 with forward compatibility and performance optimizations, delivering sub-100ms page loads with aggressive caching.

Multi-Language Support

Built-in internationalization with automatic route mapping to support multiple languages within the same site.

Pros

Flat-file system eliminates database complexity and enhances portability.
Modern SPA admin interface with real-time collaboration and customizable dashboard.
First-party REST API enables headless CMS and automation workflows.
Built-in MCP server supports AI agent integration with consistent permissions.
High performance with sub-100ms page loads and modern PHP stack.

Cons

No official structured pricing plans for premium features; some advanced plugins/themes are paid.
Requires familiarity with Markdown, YAML, and PHP for advanced customization.
Limited out-of-the-box WYSIWYG editing compared to some CMS platforms.
Community size smaller than major CMS like WordPress or Drupal.
Hosting requires PHP 8.3+ which might not be available on all servers.

Pricing

Grav pricing plans
Plan	Price	Highlights
Free	$0	Open source flat-file CMS core Access to community plugins and themes Basic admin interface REST API and MCP server included
Premium Plugins and Themes	Contact Sales	Access to premium plugins like AI Translate, Editor Pro, Revisions Pro Premium themes such as Helios Lifetime updates and support

Pricing is collected from the official Grav website and may change. Always confirm with the vendor.

For developers

First-Party REST API
Stable, versioned REST API endpoints for pages, media, users, plugins, themes, and configuration, with token authentication and plugin extensibility, enabling headless CMS and CI/CD workflows.
MCP Server for Agents
A built-in Model Context Protocol server that exposes the Grav API to AI agents with the same permission model as human admins, supporting content creation, editing, media management, and plugin handling.
Media Handling and Image Processing
Automatic image resizing, cropping, optimization, and responsive image support with a fluent API for Twig and code.
Extensible Plugin and Theme System
Large ecosystem of plugins and themes with event-hook architecture, API endpoint extensions, and Admin 2.0 integration using web components.

Frequently Asked Questions

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Help others decide, your insights matter

Community reviews (0)

Most recent

No reviews yet. Be the first to share your experience.

Ratings & reviews

No reviews yet. Be the first to share your experience.

Share your experience

Help others decide, your insights matter

Community reviews (0)

Most recent

No reviews yet. Be the first to share your experience.

Key Features

Admin 2.0 SPA

Flat-File Architecture

Content is stored as flat files (Markdown and YAML) without a database, allowing version control, portability, and zero lock-in.

Modern PHP Stack

Runs on PHP 8.3+, Symfony 7, and Twig 3 with forward compatibility and performance optimizations, delivering sub-100ms page loads with aggressive caching.

Multi-Language Support

Built-in internationalization with automatic route mapping to support multiple languages within the same site.

Pros

Flat-file system eliminates database complexity and enhances portability.
Modern SPA admin interface with real-time collaboration and customizable dashboard.
First-party REST API enables headless CMS and automation workflows.
Built-in MCP server supports AI agent integration with consistent permissions.
High performance with sub-100ms page loads and modern PHP stack.

Cons

No official structured pricing plans for premium features; some advanced plugins/themes are paid.
Requires familiarity with Markdown, YAML, and PHP for advanced customization.
Limited out-of-the-box WYSIWYG editing compared to some CMS platforms.
Community size smaller than major CMS like WordPress or Drupal.
Hosting requires PHP 8.3+ which might not be available on all servers.

Pricing

Grav pricing plans
Plan	Price	Highlights
Free	$0	Open source flat-file CMS core Access to community plugins and themes Basic admin interface REST API and MCP server included
Premium Plugins and Themes	Contact Sales	Access to premium plugins like AI Translate, Editor Pro, Revisions Pro Premium themes such as Helios Lifetime updates and support

Pricing is collected from the official Grav website and may change. Always confirm with the vendor.

For developers

First-Party REST API
Stable, versioned REST API endpoints for pages, media, users, plugins, themes, and configuration, with token authentication and plugin extensibility, enabling headless CMS and CI/CD workflows.
MCP Server for Agents
A built-in Model Context Protocol server that exposes the Grav API to AI agents with the same permission model as human admins, supporting content creation, editing, media management, and plugin handling.
Media Handling and Image Processing
Automatic image resizing, cropping, optimization, and responsive image support with a fluent API for Twig and code.
Extensible Plugin and Theme System
Large ecosystem of plugins and themes with event-hook architecture, API endpoint extensions, and Admin 2.0 integration using web components.

Grav

Overview

Key Features

Admin 2.0 SPA

Flat-File Architecture

Modern PHP Stack

Multi-Language Support

Pros

Cons

Pricing

For developers

First-Party REST API

MCP Server for Agents

Media Handling and Image Processing

Extensible Plugin and Theme System

Featured Video

Frequently Asked Questions

Ratings & reviews

Ratings & reviews

Community reviews (0)

Ratings & reviews

Community reviews (0)

Key Features

Admin 2.0 SPA

Flat-File Architecture

Modern PHP Stack

Multi-Language Support

Pros

Cons

Pricing

For developers

First-Party REST API

MCP Server for Agents

Media Handling and Image Processing

Extensible Plugin and Theme System

Featured Video

Frequently Asked Questions

More in Website Builders

Ratings & reviews

Community reviews (0)

More in Website Builders