---
title: "Cosmic JS MCP server"
url: "https://martechdb.com/vendors/cosmic-js"
markdown_url: "https://martechdb.com/vendors/cosmic-js.md"
api_url: "https://martechdb.com/api/v1/vendors/cosmicjs.com"
updated: "2026-10-01"
---

# Cosmic JS MCP server

The official MCP server published by Cosmic JS. MartechDB lists only servers the vendor publishes itself, never community servers.

- Website: [cosmicjs.com](https://cosmicjs.com)
- Categories: [Websites & apps](https://martechdb.com/categories/websites-apps.md)

## Cosmic

Manage Cosmic CMS content, media, object types, and AI generation from any MCP client.

- Address: https://mcp.cosmicjs.com/v1/buckets/{bucket_slug}
- npm package: `@cosmicjs/mcp`
- Runs: Hosted or install locally
- Sign-in: Sign-in: see vendor docs (`unknown`)
- Official MCP Registry: listed as `com.cosmicjs/mcp`
- Source code: https://github.com/cosmicjs/mcp
- Documentation: https://www.cosmicjs.com
- How we found it: Official MCP Registry, published under the vendor's own domain
- Last checked: 2026-10-01

### Connect it

Claude Code:

```sh
claude mcp add --transport http cosmic-js 'https://mcp.cosmicjs.com/v1/buckets/{bucket_slug}'
```

Claude Code, installed locally (some packages also need settings or an API key):

```sh
claude mcp add cosmic-js -- npx -y @cosmicjs/mcp
```

- Add to Cursor: <cursor://anysphere.cursor-deeplink/mcp/install?name=cosmic-js&config=eyJ1cmwiOiJodHRwczovL21jcC5jb3NtaWNqcy5jb20vdjEvYnVja2V0cy97YnVja2V0X3NsdWd9In0%3D>
- Add to VS Code: <vscode:mcp/install?%7B%22name%22%3A%22cosmic-js%22%2C%22type%22%3A%22http%22%2C%22url%22%3A%22https%3A%2F%2Fmcp.cosmicjs.com%2Fv1%2Fbuckets%2F%7Bbucket_slug%7D%22%7D>
- Claude.ai and Claude Desktop: Customize, Connectors, "+", Add custom connector, then paste https://mcp.cosmicjs.com/v1/buckets/{bucket_slug}
- ChatGPT: Settings, Apps, Advanced settings, turn on Developer mode, Create, then paste https://mcp.cosmicjs.com/v1/buckets/{bucket_slug} (this usually works only with servers that use self-serve sign-in or none)

JSON for Cursor, Windsurf and other clients that connect to hosted servers:

```json
{
    "mcpServers": {
        "cosmic-js": {
            "type": "http",
            "url": "https://mcp.cosmicjs.com/v1/buckets/{bucket_slug}"
        }
    }
}
```

## Alternatives with an official MCP server

In Websites & apps:

- [Cloudflare](https://martechdb.com/vendors/cloudflare.md) (cloudflare.com)
- [Microsoft](https://martechdb.com/vendors/microsoft.md) (microsoft.com)
- [GitHub](https://martechdb.com/vendors/github.md) (github.com)
- [WordPress](https://martechdb.com/vendors/wordpress.md) (wordpress.org)

## Get this data

- API: `curl https://martechdb.com/api/v1/vendors/cosmicjs.com`
- MCP: `claude mcp add --transport http martechdb https://martechdb.com/mcp`, then ask about Cosmic JS.
- Web page: https://martechdb.com/vendors/cosmic-js