Ghost

The Content API provides read access to posts, pages, tags, authors, and settings with filtering and pagination. The Admin API provides full CRUD for posts, pages, members, tiers, newsletters, and webhooks. Agents can create posts with rich content (HTML or Mobiledoc), schedule publication, manage member segments, and trigger email newsletter sends. The webhook system delivers events for content lifecycle changes.

Documentation is clear and developer-friendly, covering the Content and Admin APIs with JavaScript and cURL examples. The Mobiledoc content format documentation is important for teams building content creation automation. Teams evaluating Ghost versus Strapi or Contentful for headless CMS should compare Ghost's publishing-specific features (memberships, newsletters) against general-purpose CMS flexibility.

Authentication uses Content API keys (public, read-only) and Admin API keys (JWT-based, management access). The key separation maps cleanly to agent permission models — read-only agents use Content keys while management agents use Admin keys. Self-hosted Ghost installations require key generation through the admin interface.

Ghost is an open-source headless CMS purpose-built for professional publishing — providing content management, membership and subscription billing, and email newsletters in an integrated platform. Its dual API model (Content API for public reads, Admin API for management writes) makes it well-suited for agent-driven publishing workflows where content agents create and manage posts while distribution agents read published content for syndication or analysis.

Reliability for Ghost(Pro) (managed hosting) is vendor-managed. Self-hosted Ghost reliability is the team's operational responsibility — Ghost runs on Node.js with MySQL and requires appropriate production infrastructure. The publishing platform's uptime is critical for member-facing content and newsletter delivery.