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Velven

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Publish browser games, worlds, tools and wonders built with AI to Velven's hosting, and manage them.

Source code Website Documentation

Install

Add this to your client's MCP configuration (Claude Desktop: claude_desktop_config.json; Cursor: .cursor/mcp.json; VS Code and others use the same "mcpServers" shape).

Remote (streamable-http)
Claude Code 
claude mcp add --transport http velven 'https://mcp.velven.ai/mcp'
JSON configuration (Claude Desktop, Cursor, VS Code) 
{
    "mcpServers": {
        "velven": {
            "type": "http",
            "url": "https://mcp.velven.ai/mcp"
        }
    }
}

Documentation

From the project's README on GitHub, refreshed weekly. Links open on GitHub.

Velven skills

Agent Skills (skills.sh format), plugins and the MCP server for Velven, the community marketplace and host for spaces built with AI.

  • onboard/ teaches a coding agent to publish a space on Velven: velven publish makes a private preview, --prod puts it live in seconds, and it works before the creator has an account (an unlisted page with a claim token to keep it). It fills velven.json from the project, links an already deployed site as the side path, claims a space that is already on Velven, and adds sign-in, leaderboards, saves, achievements and rooms through the Velven SDK.
  • plugins/velven/ is the same skill with Velven's MCP server, as a plugin for Claude Code and Codex.

Install

Skill only, for any agent that reads skills.sh skills:

npx skills add velvenai/skills

Claude Code, the plugin (the skill and the MCP server):

/plugin marketplace add velvenai/skills
/plugin install velven@velven

Codex: add this repository as a plugin marketplace (.agents/plugins/marketplace.json) and install velven.

Gemini CLI, the MCP server: gemini extensions install https://github.com/velvenai/skills.

The MCP server

https://mcp.velven.ai/mcp, Streamable HTTP. Tools: publish (one HTML page or a few files, 3 MB in all, with an optional thumbnail and clip among them: a preview, or live in seconds with prod: true), my_spaces, versions, rollback and search_docs. Without signing in, publish makes an unlisted page and answers its claim token; the account tools ask you to sign in to Velven (OAuth). Any client that takes a remote MCP server adds it by that address, for example:

claude mcp add --transport http velven https://mcp.velven.ai/mcp

server.json is its entry in the MCP Registry (io.github.velvenai/velven).

Docs: https://velven.ai/docs

Frequently asked questions

What is Velven?

Publish browser games, worlds, tools and wonders built with AI to Velven's hosting, and manage them.

How do I install Velven?

It runs as a remote server. In Claude Code: claude mcp add --transport http velven 'https://mcp.velven.ai/mcp'. For other clients, paste the JSON configuration from this page into their MCP settings.

Does Velven need an API key?

Its registry entry lists no required key or secret. Some features may still need an account with the service it connects to.

Is Velven open source?

Its code is public on GitHub, but the repository does not declare a standard license.

Who maintains Velven?

It is published by velvenai. AI.tn lists it but does not maintain or endorse it.

From the official MCP Registry. Listing is not an endorsement: review a server's code and permissions before giving it access to your data.