Cosmic | AI-Native Managed Headless CMS for Content Teams

# Cosmic Documentation ## For Agents If you are an AI agent: start at <https://www.cosmicjs.com/docs/agent-skills.md>. It includes a one-curl signup flow (`POST /v3/agents/sign-up`) that provisions a free-tier Cosmic project + bucket tied to a human's email, without any prior account. ## Introduction You can access all of our documentation as plain text markdown files by adding `.md` to the end of any url. For example, you can find the plain text version of the docs homepage at <https://www.cosmicjs.com/docs/index.md>. For a single concatenated dump of every docs page, see <https://www.cosmicjs.com/docs/llms-full.txt>. ## Get started - [Introduction](https://www.cosmicjs.com/docs/index.md): Get an overview of Cosmic and its features. - [Quickstart](https://www.cosmicjs.com/docs/quickstart.md): Get up and running with Cosmic quickly. - [Agent Skills](https://www.cosmicjs.com/docs/agent-skills.md): Agent onboarding for Cosmic: signup flow that provisions a free-tier project + bucket tied to a human email (POST /v3/agents/sign-up), claim via emailed OTP, plus install of the Cosmic SDK rules file for AI coding assistants. - [MCP Server](https://www.cosmicjs.com/docs/mcp-server.md): MCP server for managing Cosmic content directly through AI assistants. Hosted endpoints at https://mcp.cosmicjs.com/v1/buckets/{bucket-slug} (bucket tools: objects, media, types, AI gen) and https://mcp.cosmicjs.com/v1/agent (signup tools: cosmic_agent_signup, cosmic_agent_verify, cosmic_agent_status). Self-hosted via `npx @cosmicjs/mcp`. - [Agent Plugin](https://www.cosmicjs.com/docs/agent-plugin.md): The Cosmic MCP server and Agent Skills packaged as one portable Agent Plugin (agent-plugins.org spec 1.0.0), published at github.com/cosmicjs/cosmic-agent-plugin. One install per client for Cursor, VS Code, GitHub Copilot, and Kiro; not yet supported in ChatGPT/Codex. Declares two MCP servers: `cosmic` (stdio via `npx @cosmicjs/mcp`, reads COSMIC_BUCKET_SLUG / COSMIC_READ_KEY / COSMIC_WRITE_