web3ctx MCP Server: Install & Setup

Install web3ctx in Claude Code

Claude Code

claude mcp add --transport http web3ctx https://mcp.scarai.xyz/mcp

mcp.json (Claude Desktop, Cursor, VS Code, Windsurf)

{
  "mcpServers": {
    "web3ctx": {
      "url": "https://mcp.scarai.xyz/mcp"
    }
  }
}

Frequently asked questions

What does the web3ctx MCP server do?

Version-true web3 context: validated integration recipes, EIPs, ABIs and contract addresses.

Is the web3ctx MCP server free?

Yes, most likely. Open source and no paid account or API key is mentioned in the listing. Check the provider for current pricing.

Does web3ctx run locally or remotely?

Remote. Hosted by the provider. You connect with a URL, nothing to install.

How do I add web3ctx to Claude Code?

Run: claude mcp add --transport http web3ctx https://mcp.scarai.xyz/mcp

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