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Greta

Official registry Cloud and DevOps

AI app builder: build, deploy and grow websites and full-stack apps on Greta from your AI agent.

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 greta 'https://mcp.greta.sh'
JSON configuration (Claude Desktop, Cursor, VS Code) 
{
    "mcpServers": {
        "greta": {
            "type": "http",
            "url": "https://mcp.greta.sh"
        }
    }
}

Documentation

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

Contents
  1. Greta MCP server
  2. Connect
  3. What your agent can do
  4. Links

Greta MCP server

Connect your AI agent to Greta, the AI app builder. Ask Claude, ChatGPT, Cursor or any MCP client to build you a website or an app, and Greta makes a real hosted project with a live URL, not a mockup.

This is a remote MCP server. There is nothing to install or run.

https://mcp.greta.sh

Transport: Streamable HTTP. Auth: OAuth 2.1 (your client opens a browser and you sign in to Greta).

Connect

Claude Code

claude mcp add greta --transport http https://mcp.greta.sh

Then run /mcp, pick greta and sign in.

Claude.ai, ChatGPT, Cursor, VS Code and other MCP clients: add a custom connector or server with the URL above; the client signs you in to Greta.

What your agent can do

  • Build a full-stack app (frontend, backend, database) or a self-growing website by chatting with Greta's builder, and follow each build
  • Start from a template: search Greta's marketplace of finished apps and make one your own
  • Deploy an app's backend and publish a website to its live address
  • Grow a website: run its nightly growth loop with a credit cap, see what it suggests to be cited by AI answer engines, queue pages, review what the publish gate held, and read what each night ran and cost
  • Check projects, credits and how a site is doing

Building, deploying and growth runs use Greta credits. Every paid action states its cost, and the agent can cap what a call may spend.

Frequently asked questions

What is Greta?

AI app builder: build, deploy and grow websites and full-stack apps on Greta from your AI agent.

How do I install Greta?

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

Does Greta 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 Greta open source?

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

Who maintains Greta?

It is published by Questera-Marketing. 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.