Cosmic MCP Server Lets Claude AI Read and Write Directly to Your CMS
Cosmic has launched an MCP (Model Context Protocol) server that allows Claude AI to directly interact with content stored in a Cosmic CMS bucket, going beyond simple drafting to querying and writing back to the content model. The server exposes 18 tools covering objects, media, and AI generation, all scoped to a single bucket using user-supplied API keys. Developers can connect Claude Desktop or Cursor to the hosted endpoint in minutes by editing a config file with their bucket slug and authentication keys. A key security feature is the separation of read and write keys — omitting the write key from the bearer token restricts the AI client to read-only access, preventing unintended edits to production content. Once connected, users can prompt Claude to perform tasks such as finding posts missing SEO descriptions, creating draft content, or bulk-adding alt text to media library images.
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